Merge pull request #21742 from wangjiaming0909/feature/3.0/TD-24656

feature: add input, output ts order for execution plans

include/common/tcommon.h

@@ -198,6 +198,7 @@ typedef struct SDataBlockInfo {
   SBlockID    id;
   int16_t     hasVarCol;
   int16_t     dataLoad;  // denote if the data is loaded or not
+  uint8_t     scanFlag;
 
   // TODO: optimize and remove following
   int64_t     version;    // used for stream, and need serialization

include/libs/nodes/plannodes.h

@@ -53,6 +53,8 @@ typedef struct SLogicNode {
   EDataOrderLevel    requireDataOrder;  // requirements for input data
   EDataOrderLevel    resultDataOrder;   // properties of the output data
   EGroupAction       groupAction;
+  EOrder             inputTsOrder;
+  EOrder             outputTsOrder;
 } SLogicNode;
 
 typedef enum EScanType {
@@ -111,7 +113,6 @@ typedef struct SJoinLogicNode {
   SNode*     pMergeCondition;
   SNode*     pOnConditions;
   bool       isSingleTableJoin;
-  EOrder     inputTsOrder;
   SNode*     pColEqualOnConditions;
 } SJoinLogicNode;
 
@@ -229,8 +230,6 @@ typedef struct SWindowLogicNode {
   int8_t           igExpired;
   int8_t           igCheckUpdate;
   EWindowAlgorithm windowAlgo;
-  EOrder           inputTsOrder;
-  EOrder           outputTsOrder;
 } SWindowLogicNode;
 
 typedef struct SFillLogicNode {
@@ -241,7 +240,6 @@ typedef struct SFillLogicNode {
   SNode*      pWStartTs;
   SNode*      pValues;  // SNodeListNode
   STimeWindow timeRange;
-  EOrder      inputTsOrder;
 } SFillLogicNode;
 
 typedef struct SSortLogicNode {
@@ -310,6 +308,8 @@ typedef struct SDataBlockDescNode {
 
 typedef struct SPhysiNode {
   ENodeType           type;
+  EOrder              inputTsOrder;
+  EOrder              outputTsOrder;
   SDataBlockDescNode* pOutputDataBlockDesc;
   SNode*              pConditions;
   SNodeList*          pChildren;
@@ -406,7 +406,6 @@ typedef struct SSortMergeJoinPhysiNode {
   SNode*     pMergeCondition;
   SNode*     pOnConditions;
   SNodeList* pTargets;
-  EOrder     inputTsOrder;
   SNode*     pColEqualOnConditions;
 } SSortMergeJoinPhysiNode;
 
@@ -460,8 +459,6 @@ typedef struct SWindowPhysiNode {
   int64_t    watermark;
   int64_t    deleteMark;
   int8_t     igExpired;
-  EOrder     inputTsOrder;
-  EOrder     outputTsOrder;
   bool       mergeDataBlock;
 } SWindowPhysiNode;
 
@@ -488,7 +485,6 @@ typedef struct SFillPhysiNode {
   SNode*      pWStartTs;  // SColumnNode
   SNode*      pValues;    // SNodeListNode
   STimeWindow timeRange;
-  EOrder      inputTsOrder;
 } SFillPhysiNode;
 
 typedef SFillPhysiNode SStreamFillPhysiNode;

include/libs/nodes/querynodes.h

@@ -69,6 +69,7 @@ typedef struct SColumnNode {
   uint64_t    tableId;
   int8_t      tableType;
   col_id_t    colId;
+  uint16_t    projIdx;  // the idx in project list, start from 1
   EColumnType colType;  // column or tag
   bool        hasIndex;
   char        dbName[TSDB_DB_NAME_LEN];

source/common/src/tdatablock.c

@@ -791,8 +791,8 @@ size_t blockDataGetRowSize(SSDataBlock* pBlock) {
  * @return
  */
 size_t blockDataGetSerialMetaSize(uint32_t numOfCols) {
-  // | version | total length | total rows | total columns | flag seg| block group id | column schema | each column
-  // length |
+  // | version | total length | total rows | total columns | flag seg| block group id | column schema
+  // | each column length |
   return sizeof(int32_t) + sizeof(int32_t) + sizeof(int32_t) + sizeof(int32_t) + sizeof(int32_t) + sizeof(uint64_t) +
          numOfCols * (sizeof(int8_t) + sizeof(int32_t)) + numOfCols * sizeof(int32_t);
 }

source/libs/command/inc/commandInt.h

@@ -145,7 +145,7 @@ typedef struct SExplainCtx {
   SHashObj    *groupHash;     // Hash<SExplainGroup>
 } SExplainCtx;
 
-#define EXPLAIN_ORDER_STRING(_order) ((ORDER_ASC == _order) ? "asc" : "desc")
+#define EXPLAIN_ORDER_STRING(_order) ((ORDER_ASC == _order) ? "asc" : ORDER_DESC == _order ? "desc" : "unknown")
 #define EXPLAIN_JOIN_STRING(_type) ((JOIN_TYPE_INNER == _type) ? "Inner join" : "Join")
 
 #define INVERAL_TIME_FROM_PRECISION_TO_UNIT(_t, _u, _p) (((_u) == 'n' || (_u) == 'y') ? (_t) : (convertTimeFromPrecisionToUnit(_t, _p, _u)))

source/libs/command/src/explain.c

@@ -499,6 +499,9 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
       EXPLAIN_ROW_APPEND(EXPLAIN_COLUMNS_FORMAT, pPrjNode->pProjections->length);
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_WIDTH_FORMAT, pPrjNode->node.pOutputDataBlockDesc->totalRowSize);
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pPrjNode->node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));
@@ -544,6 +547,9 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
       EXPLAIN_ROW_APPEND(EXPLAIN_COLUMNS_FORMAT, pJoinNode->pTargets->length);
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_WIDTH_FORMAT, pJoinNode->node.pOutputDataBlockDesc->totalRowSize);
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pJoinNode->node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));
@@ -597,6 +603,9 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
         EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
         EXPLAIN_ROW_APPEND(EXPLAIN_GROUPS_FORMAT, pAggNode->pGroupKeys->length);
       }
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pAggNode->node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));
@@ -716,6 +725,11 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
     case QUERY_NODE_PHYSICAL_PLAN_SORT: {
       SSortPhysiNode *pSortNode = (SSortPhysiNode *)pNode;
       EXPLAIN_ROW_NEW(level, EXPLAIN_SORT_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pSortNode->node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_OUTPUT_ORDER_TYPE_FORMAT, EXPLAIN_ORDER_STRING(pSortNode->node.outputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_LEFT_PARENTHESIS_FORMAT);
       if (pResNode->pExecInfo) {
         QRY_ERR_RET(qExplainBufAppendExecInfo(pResNode->pExecInfo, tbuf, &tlen));
@@ -796,9 +810,10 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_WIDTH_FORMAT, pIntNode->window.node.pOutputDataBlockDesc->totalRowSize);
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
-      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pIntNode->window.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pIntNode->window.node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_OUTPUT_ORDER_TYPE_FORMAT, EXPLAIN_ORDER_STRING(pIntNode->window.node.outputTsOrder));
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
-      EXPLAIN_ROW_APPEND(EXPLAIN_OUTPUT_ORDER_TYPE_FORMAT, EXPLAIN_ORDER_STRING(pIntNode->window.outputTsOrder));
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));
@@ -847,6 +862,10 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
       EXPLAIN_ROW_APPEND(EXPLAIN_FUNCTIONS_FORMAT, pIntNode->window.pFuncs->length);
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_WIDTH_FORMAT, pIntNode->window.node.pOutputDataBlockDesc->totalRowSize);
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pIntNode->window.node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_OUTPUT_ORDER_TYPE_FORMAT, EXPLAIN_ORDER_STRING(pIntNode->window.node.outputTsOrder));
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));
@@ -895,6 +914,9 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
       EXPLAIN_ROW_APPEND(EXPLAIN_MODE_FORMAT, nodesGetFillModeString(pFillNode->mode));
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_WIDTH_FORMAT, pFillNode->node.pOutputDataBlockDesc->totalRowSize);
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pFillNode->node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));
@@ -1080,6 +1102,10 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
       EXPLAIN_ROW_APPEND(EXPLAIN_COLUMNS_FORMAT, nodesGetOutputNumFromSlotList(pDescNode->pSlots));
       EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
       EXPLAIN_ROW_APPEND(EXPLAIN_WIDTH_FORMAT, pDescNode->totalRowSize);
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_INPUT_ORDER_FORMAT, EXPLAIN_ORDER_STRING(pMergeNode->node.inputTsOrder));
+      EXPLAIN_ROW_APPEND(EXPLAIN_BLANK_FORMAT);
+      EXPLAIN_ROW_APPEND(EXPLAIN_OUTPUT_ORDER_TYPE_FORMAT, EXPLAIN_ORDER_STRING(pMergeNode->node.outputTsOrder));
       EXPLAIN_ROW_APPEND(EXPLAIN_RIGHT_PARENTHESIS_FORMAT);
       EXPLAIN_ROW_END();
       QRY_ERR_RET(qExplainResAppendRow(ctx, tbuf, tlen, level));

source/libs/executor/inc/executorInt.h

@@ -399,6 +399,8 @@ typedef struct SOptrBasicInfo {
   SResultRowInfo resultRowInfo;
   SSDataBlock*   pRes;
   bool           mergeResultBlock;
+  int32_t        inputTsOrder;
+  int32_t        outputTsOrder;
 } SOptrBasicInfo;
 
 typedef struct SIntervalAggOperatorInfo {
@@ -411,8 +413,6 @@ typedef struct SIntervalAggOperatorInfo {
   STimeWindow        win;                // query time range
   bool               timeWindowInterpo;  // interpolation needed or not
   SArray*            pInterpCols;        // interpolation columns
-  int32_t            resultTsOrder;      // result timestamp order
-  int32_t            inputOrder;         // input data ts order
   EOPTR_EXEC_MODEL   execModel;          // operator execution model [batch model|stream model]
   STimeWindowAggSupp twAggSup;
   SArray*            pPrevValues;  //  SArray<SGroupKeys> used to keep the previous not null value for interpolation.

source/libs/executor/inc/tsort.h

@@ -146,7 +146,7 @@ void* tsortGetValue(STupleHandle* pVHandle, int32_t colId);
  * @return
  */
 uint64_t tsortGetGroupId(STupleHandle* pVHandle);
-
+void*    tsortGetBlockInfo(STupleHandle* pVHandle);
 /**
  *
  * @param pSortHandle

source/libs/executor/src/aggregateoperator.c

@@ -108,6 +108,8 @@ SOperatorInfo* createAggregateOperatorInfo(SOperatorInfo* downstream, SAggPhysiN
   pInfo->binfo.mergeResultBlock = pAggNode->mergeDataBlock;
   pInfo->groupKeyOptimized = pAggNode->groupKeyOptimized;
   pInfo->groupId = UINT64_MAX;
+  pInfo->binfo.inputTsOrder = pAggNode->node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pAggNode->node.outputTsOrder;
 
   setOperatorInfo(pOperator, "TableAggregate", QUERY_NODE_PHYSICAL_PLAN_HASH_AGG, true, OP_NOT_OPENED, pInfo,
                   pTaskInfo);
@@ -164,10 +166,8 @@ int32_t doOpenAggregateOptr(SOperatorInfo* pOperator) {
   SOperatorInfo* downstream = pOperator->pDownstream[0];
 
   int64_t st = taosGetTimestampUs();
-
-  int32_t order = TSDB_ORDER_ASC;
-  int32_t scanFlag = MAIN_SCAN;
-
+  int32_t code = TSDB_CODE_SUCCESS;
+  int32_t order = pAggInfo->binfo.inputTsOrder;
   bool hasValidBlock = false;
 
   while (1) {
@@ -185,12 +185,7 @@ int32_t doOpenAggregateOptr(SOperatorInfo* pOperator) {
       }
     }
     hasValidBlock = true;
-
-    int32_t code = getTableScanInfo(pOperator, &order, &scanFlag, false);
-    if (code != TSDB_CODE_SUCCESS) {
-      destroyDataBlockForEmptyInput(blockAllocated, &pBlock);
-      T_LONG_JMP(pTaskInfo->env, code);
-    }
+    pAggInfo->binfo.pRes->info.scanFlag = pBlock->info.scanFlag;
 
     // there is an scalar expression that needs to be calculated before apply the group aggregation.
     if (pAggInfo->scalarExprSup.pExprInfo != NULL && !blockAllocated) {
@@ -204,7 +199,7 @@ int32_t doOpenAggregateOptr(SOperatorInfo* pOperator) {
 
     // the pDataBlock are always the same one, no need to call this again
     setExecutionContext(pOperator, pOperator->exprSupp.numOfExprs, pBlock->info.id.groupId);
-    setInputDataBlock(pSup, pBlock, order, scanFlag, true);
+    setInputDataBlock(pSup, pBlock, order, pBlock->info.scanFlag, true);
     code = doAggregateImpl(pOperator, pSup->pCtx);
     if (code != 0) {
       destroyDataBlockForEmptyInput(blockAllocated, &pBlock);

source/libs/executor/src/cachescanoperator.c

@@ -208,6 +208,7 @@ SSDataBlock* doScanCache(SOperatorInfo* pOperator) {
 
       pRes->info.id.uid = *(tb_uid_t*)taosArrayGet(pInfo->pUidList, pInfo->indexOfBufferedRes);
       pRes->info.rows = 1;
+      pRes->info.scanFlag = MAIN_SCAN;
 
       SExprSupp* pSup = &pInfo->pseudoExprSup;
       int32_t    code = addTagPseudoColumnData(&pInfo->readHandle, pSup->pExprInfo, pSup->numOfExprs, pRes,

source/libs/executor/src/eventwindowoperator.c

@@ -120,6 +120,8 @@ SOperatorInfo* createEventwindowOperatorInfo(SOperatorInfo* downstream, SPhysiNo
 
   initBasicInfo(&pInfo->binfo, pResBlock);
   initResultRowInfo(&pInfo->binfo.resultRowInfo);
+  pInfo->binfo.inputTsOrder = physiNode->inputTsOrder;
+  pInfo->binfo.outputTsOrder = physiNode->outputTsOrder;
 
   pInfo->twAggSup = (STimeWindowAggSupp){.waterMark = pEventWindowNode->window.watermark,
                                          .calTrigger = pEventWindowNode->window.triggerType};
@@ -183,7 +185,7 @@ static SSDataBlock* eventWindowAggregate(SOperatorInfo* pOperator) {
   SExecTaskInfo*            pTaskInfo = pOperator->pTaskInfo;
 
   SExprSupp* pSup = &pOperator->exprSupp;
-  int32_t    order = TSDB_ORDER_ASC;
+  int32_t    order = pInfo->binfo.inputTsOrder;
 
   SSDataBlock* pRes = pInfo->binfo.pRes;
 
@@ -196,6 +198,7 @@ static SSDataBlock* eventWindowAggregate(SOperatorInfo* pOperator) {
       break;
     }
 
+    pRes->info.scanFlag = pBlock->info.scanFlag;
     setInputDataBlock(pSup, pBlock, order, MAIN_SCAN, true);
     blockDataUpdateTsWindow(pBlock, pInfo->tsSlotId);
 

source/libs/executor/src/exchangeoperator.c

@@ -520,6 +520,7 @@ int32_t extractDataBlockFromFetchRsp(SSDataBlock* pRes, char* pData, SArray* pCo
     // data from mnode
     pRes->info.dataLoad = 1;
     pRes->info.rows = pBlock->info.rows;
+    pRes->info.scanFlag = MAIN_SCAN;
     relocateColumnData(pRes, pColList, pBlock->pDataBlock, false);
     blockDataDestroy(pBlock);
   }

source/libs/executor/src/filloperator.c

@@ -178,16 +178,15 @@ static SSDataBlock* doFillImpl(SOperatorInfo* pOperator) {
 
   blockDataCleanup(pResBlock);
 
-  int32_t order = TSDB_ORDER_ASC;
-  int32_t scanFlag = MAIN_SCAN;
-  getTableScanInfo(pOperator, &order, &scanFlag, false);
+  int32_t order = pInfo->pFillInfo->order;
 
   SOperatorInfo* pDownstream = pOperator->pDownstream[0];
-
+#if 0
   // the scan order may be different from the output result order for agg interval operator.
   if (pDownstream->operatorType == QUERY_NODE_PHYSICAL_PLAN_HASH_INTERVAL) {
     order = ((SIntervalAggOperatorInfo*) pDownstream->info)->resultTsOrder;
   }
+#endif
 
   doHandleRemainBlockFromNewGroup(pOperator, pInfo, pResultInfo, order);
   if (pResBlock->info.rows > 0) {
@@ -206,13 +205,14 @@ static SSDataBlock* doFillImpl(SOperatorInfo* pOperator) {
 
       taosFillSetStartInfo(pInfo->pFillInfo, 0, pInfo->win.ekey);
     } else {
+      pResBlock->info.scanFlag = pBlock->info.scanFlag;
       pBlock->info.dataLoad = 1;
       blockDataUpdateTsWindow(pBlock, pInfo->primarySrcSlotId);
 
       blockDataCleanup(pInfo->pRes);
       blockDataEnsureCapacity(pInfo->pRes, pBlock->info.rows);
       blockDataEnsureCapacity(pInfo->pFinalRes, pBlock->info.rows);
-      doApplyScalarCalculation(pOperator, pBlock, order, scanFlag);
+      doApplyScalarCalculation(pOperator, pBlock, order, pBlock->info.scanFlag);
 
       if (pInfo->curGroupId == 0 || (pInfo->curGroupId == pInfo->pRes->info.id.groupId)) {
         if (pInfo->curGroupId == 0 && taosFillNotStarted(pInfo->pFillInfo)) {
@@ -405,7 +405,7 @@ SOperatorInfo* createFillOperatorInfo(SOperatorInfo* downstream, SFillPhysiNode*
           ? &((SMergeAlignedIntervalAggOperatorInfo*)downstream->info)->intervalAggOperatorInfo->interval
           : &((SIntervalAggOperatorInfo*)downstream->info)->interval;
 
-  int32_t order = (pPhyFillNode->inputTsOrder == ORDER_ASC) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
+  int32_t order = (pPhyFillNode->node.inputTsOrder == ORDER_ASC) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
   int32_t type = convertFillType(pPhyFillNode->mode);
 
   SResultInfo* pResultInfo = &pOperator->resultInfo;

source/libs/executor/src/groupoperator.c

@@ -378,9 +378,7 @@ static SSDataBlock* hashGroupbyAggregate(SOperatorInfo* pOperator) {
     return buildGroupResultDataBlock(pOperator);
   }
 
-  int32_t order = TSDB_ORDER_ASC;
-  int32_t scanFlag = MAIN_SCAN;
-
+  int32_t order = pInfo->binfo.inputTsOrder;
   int64_t        st = taosGetTimestampUs();
   SOperatorInfo* downstream = pOperator->pDownstream[0];
 
@@ -390,13 +388,10 @@ static SSDataBlock* hashGroupbyAggregate(SOperatorInfo* pOperator) {
       break;
     }
 
-    int32_t code = getTableScanInfo(pOperator, &order, &scanFlag, false);
-    if (code != TSDB_CODE_SUCCESS) {
-      T_LONG_JMP(pTaskInfo->env, code);
-    }
+    pInfo->binfo.pRes->info.scanFlag = pBlock->info.scanFlag;
 
     // the pDataBlock are always the same one, no need to call this again
-    setInputDataBlock(&pOperator->exprSupp, pBlock, order, scanFlag, true);
+    setInputDataBlock(&pOperator->exprSupp, pBlock, order, pBlock->info.scanFlag, true);
 
     // there is an scalar expression that needs to be calculated right before apply the group aggregation.
     if (pInfo->scalarSup.pExprInfo != NULL) {
@@ -481,6 +476,8 @@ SOperatorInfo* createGroupOperatorInfo(SOperatorInfo* downstream, SAggPhysiNode*
   setOperatorInfo(pOperator, "GroupbyAggOperator", 0, true, OP_NOT_OPENED, pInfo, pTaskInfo);
 
   pInfo->binfo.mergeResultBlock = pAggNode->mergeDataBlock;
+  pInfo->binfo.inputTsOrder = pAggNode->node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pAggNode->node.outputTsOrder;
 
   pOperator->fpSet = createOperatorFpSet(optrDummyOpenFn, hashGroupbyAggregate, NULL, destroyGroupOperatorInfo,
                                          optrDefaultBufFn, NULL);
@@ -762,6 +759,7 @@ static SSDataBlock* hashPartition(SOperatorInfo* pOperator) {
       break;
     }
 
+    pInfo->binfo.pRes->info.scanFlag = pBlock->info.scanFlag;
     // there is an scalar expression that needs to be calculated right before apply the group aggregation.
     if (pInfo->scalarSup.pExprInfo != NULL) {
       pTaskInfo->code = projectApplyFunctions(pInfo->scalarSup.pExprInfo, pBlock, pBlock, pInfo->scalarSup.pCtx,

source/libs/executor/src/joinoperator.c

@@ -253,9 +253,9 @@ SOperatorInfo* createMergeJoinOperatorInfo(SOperatorInfo** pDownstream, int32_t
   }
 
   pInfo->inputOrder = TSDB_ORDER_ASC;
-  if (pJoinNode->inputTsOrder == ORDER_ASC) {
+  if (pJoinNode->node.inputTsOrder == ORDER_ASC) {
     pInfo->inputOrder = TSDB_ORDER_ASC;
-  } else if (pJoinNode->inputTsOrder == ORDER_DESC) {
+  } else if (pJoinNode->node.inputTsOrder == ORDER_DESC) {
     pInfo->inputOrder = TSDB_ORDER_DESC;
   }
 
@@ -684,6 +684,7 @@ static void doMergeJoinImpl(struct SOperatorInfo* pOperator, SSDataBlock* pRes)
     // the pDataBlock are always the same one, no need to call this again
     pRes->info.rows = nrows;
     pRes->info.dataLoad = 1;
+    pRes->info.scanFlag = MAIN_SCAN;
     if (pRes->info.rows >= pOperator->resultInfo.threshold) {
       break;
     }

source/libs/executor/src/projectoperator.c

@@ -93,6 +93,8 @@ SOperatorInfo* createProjectOperatorInfo(SOperatorInfo* downstream, SProjectPhys
 
   pInfo->binfo.pRes = pResBlock;
   pInfo->pFinalRes = createOneDataBlock(pResBlock, false);
+  pInfo->binfo.inputTsOrder = pProjPhyNode->node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pProjPhyNode->node.outputTsOrder;
 
   if (pTaskInfo->execModel == OPTR_EXEC_MODEL_STREAM) {
     pInfo->mergeDataBlocks = false;
@@ -238,8 +240,9 @@ SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
   }
 
   int64_t st = 0;
-  int32_t order = 0;
+  int32_t order = pInfo->inputTsOrder;
   int32_t scanFlag = 0;
+  int32_t code = TSDB_CODE_SUCCESS;
 
   if (pOperator->cost.openCost == 0) {
     st = taosGetTimestampUs();
@@ -284,10 +287,10 @@ SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
         break;
       }
 
-      // the pDataBlock are always the same one, no need to call this again
-      int32_t code = getTableScanInfo(downstream, &order, &scanFlag, false);
-      if (code != TSDB_CODE_SUCCESS) {
-        T_LONG_JMP(pTaskInfo->env, code);
+      if (pProjectInfo->mergeDataBlocks) {
+        pFinalRes->info.scanFlag = scanFlag = pBlock->info.scanFlag;
+      } else {
+        pRes->info.scanFlag = scanFlag = pBlock->info.scanFlag;
       }
 
       setInputDataBlock(pSup, pBlock, order, scanFlag, false);
@@ -406,6 +409,8 @@ SOperatorInfo* createIndefinitOutputOperatorInfo(SOperatorInfo* downstream, SPhy
   }
 
   pInfo->binfo.pRes = pResBlock;
+  pInfo->binfo.inputTsOrder = pNode->inputTsOrder;
+  pInfo->binfo.outputTsOrder = pNode->outputTsOrder;
   pInfo->pPseudoColInfo = setRowTsColumnOutputInfo(pSup->pCtx, numOfExpr);
 
   setOperatorInfo(pOperator, "IndefinitOperator", QUERY_NODE_PHYSICAL_PLAN_INDEF_ROWS_FUNC, false, OP_NOT_OPENED, pInfo,
@@ -429,18 +434,13 @@ _error:
 
 static void doHandleDataBlock(SOperatorInfo* pOperator, SSDataBlock* pBlock, SOperatorInfo* downstream,
                               SExecTaskInfo* pTaskInfo) {
-  int32_t order = 0;
-  int32_t scanFlag = 0;
-
   SIndefOperatorInfo* pIndefInfo = pOperator->info;
   SOptrBasicInfo*     pInfo = &pIndefInfo->binfo;
   SExprSupp*          pSup = &pOperator->exprSupp;
 
-  // the pDataBlock are always the same one, no need to call this again
-  int32_t code = getTableScanInfo(downstream, &order, &scanFlag, false);
-  if (code != TSDB_CODE_SUCCESS) {
-    T_LONG_JMP(pTaskInfo->env, code);
-  }
+  int32_t order = pInfo->inputTsOrder;
+  int32_t scanFlag = pBlock->info.scanFlag;
+  int32_t code = TSDB_CODE_SUCCESS;
 
   // there is an scalar expression that needs to be calculated before apply the group aggregation.
   SExprSupp* pScalarSup = &pIndefInfo->scalarSup;
@@ -506,6 +506,7 @@ SSDataBlock* doApplyIndefinitFunction(SOperatorInfo* pOperator) {
           setOperatorCompleted(pOperator);
           break;
         }
+        pInfo->pRes->info.scanFlag = pBlock->info.scanFlag;
 
         if (pIndefInfo->groupId == 0 && pBlock->info.id.groupId != 0) {
           pIndefInfo->groupId = pBlock->info.id.groupId;  // this is the initial group result

source/libs/executor/src/scanoperator.c

@@ -712,6 +712,7 @@ static SSDataBlock* doTableScanImpl(SOperatorInfo* pOperator) {
     pTableScanInfo->base.readRecorder.elapsedTime += (taosGetTimestampUs() - st) / 1000.0;
 
     pOperator->cost.totalCost = pTableScanInfo->base.readRecorder.elapsedTime;
+    pBlock->info.scanFlag = pTableScanInfo->base.scanFlag;
     return pBlock;
   }
   return NULL;

source/libs/executor/src/sortoperator.c

@@ -69,6 +69,8 @@ SOperatorInfo* createSortOperatorInfo(SOperatorInfo* downstream, SSortPhysiNode*
 
   pInfo->binfo.pRes = createDataBlockFromDescNode(pDescNode);
   pInfo->pSortInfo = createSortInfo(pSortNode->pSortKeys);
+  pInfo->binfo.inputTsOrder = pSortNode->node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pSortNode->node.outputTsOrder;
   initLimitInfo(pSortNode->node.pLimit, pSortNode->node.pSlimit, &pInfo->limitInfo);
 
   setOperatorInfo(pOperator, "SortOperator", QUERY_NODE_PHYSICAL_PLAN_SORT, true, OP_NOT_OPENED, pInfo, pTaskInfo);
@@ -114,6 +116,7 @@ void appendOneRowToDataBlock(SSDataBlock* pBlock, STupleHandle* pTupleHandle) {
   }
 
   pBlock->info.dataLoad = 1;
+  pBlock->info.scanFlag = ((SDataBlockInfo*)tsortGetBlockInfo(pTupleHandle))->scanFlag;
   pBlock->info.rows += 1;
 }
 
@@ -155,6 +158,7 @@ SSDataBlock* getSortedBlockData(SSortHandle* pHandle, SSDataBlock* pDataBlock, i
 
     pDataBlock->info.dataLoad = 1;
     pDataBlock->info.rows = p->info.rows;
+    pDataBlock->info.scanFlag = p->info.scanFlag;
   }
 
   blockDataDestroy(p);
@@ -331,6 +335,7 @@ SSDataBlock* getGroupSortedBlockData(SSortHandle* pHandle, SSDataBlock* pDataBlo
 
     pDataBlock->info.rows = p->info.rows;
     pDataBlock->info.capacity = p->info.rows;
+    pDataBlock->info.scanFlag = p->info.scanFlag;
   }
 
   blockDataDestroy(p);
@@ -505,6 +510,8 @@ SOperatorInfo* createGroupSortOperatorInfo(SOperatorInfo* downstream, SGroupSort
 
   pInfo->binfo.pRes = createDataBlockFromDescNode(pDescNode);
   blockDataEnsureCapacity(pInfo->binfo.pRes, pOperator->resultInfo.capacity);
+  pInfo->binfo.inputTsOrder = pSortPhyNode->node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pSortPhyNode->node.outputTsOrder;
 
   int32_t numOfOutputCols = 0;
   int32_t code = extractColMatchInfo(pSortPhyNode->pTargets, pDescNode, &numOfOutputCols, COL_MATCH_FROM_SLOT_ID,
@@ -698,6 +705,7 @@ SSDataBlock* getMultiwaySortedBlockData(SSortHandle* pHandle, SSDataBlock* pData
     }
 
     pDataBlock->info.rows = p->info.rows;
+    pDataBlock->info.scanFlag = p->info.scanFlag;
     if (pInfo->ignoreGroupId) {
       pDataBlock->info.id.groupId = 0;
     } else {
@@ -799,6 +807,8 @@ SOperatorInfo* createMultiwayMergeOperatorInfo(SOperatorInfo** downStreams, size
   size_t numOfCols = taosArrayGetSize(pInfo->binfo.pRes->pDataBlock);
   pInfo->bufPageSize = getProperSortPageSize(rowSize, numOfCols);
   pInfo->sortBufSize = pInfo->bufPageSize * (numStreams + 1);  // one additional is reserved for merged result.
+  pInfo->binfo.inputTsOrder = pMergePhyNode->node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pMergePhyNode->node.outputTsOrder;
 
   setOperatorInfo(pOperator, "MultiwayMergeOperator", QUERY_NODE_PHYSICAL_PLAN_MERGE, false, OP_NOT_OPENED, pInfo, pTaskInfo);
   pOperator->fpSet = createOperatorFpSet(openMultiwayMergeOperator, doMultiwayMerge, NULL,

source/libs/executor/src/timesliceoperator.c

@@ -893,6 +893,7 @@ static SSDataBlock* doTimeslice(SOperatorInfo* pOperator) {
         break;
       }
 
+      pResBlock->info.scanFlag = pBlock->info.scanFlag;
       if (pSliceInfo->groupId == 0 && pBlock->info.id.groupId != 0) {
         pSliceInfo->groupId = pBlock->info.id.groupId;
       } else {

source/libs/executor/src/timewindowoperator.c

@@ -355,7 +355,7 @@ static void setNotInterpoWindowKey(SqlFunctionCtx* pCtx, int32_t numOfOutput, in
 
 static bool setTimeWindowInterpolationStartTs(SIntervalAggOperatorInfo* pInfo, int32_t pos, SSDataBlock* pBlock,
                                               const TSKEY* tsCols, STimeWindow* win, SExprSupp* pSup) {
-  bool ascQuery = (pInfo->inputOrder == TSDB_ORDER_ASC);
+  bool ascQuery = (pInfo->binfo.inputTsOrder == TSDB_ORDER_ASC);
 
   TSKEY curTs = tsCols[pos];
 
@@ -385,7 +385,7 @@ static bool setTimeWindowInterpolationStartTs(SIntervalAggOperatorInfo* pInfo, i
 static bool setTimeWindowInterpolationEndTs(SIntervalAggOperatorInfo* pInfo, SExprSupp* pSup, int32_t endRowIndex,
                                             SArray* pDataBlock, const TSKEY* tsCols, TSKEY blockEkey,
                                             STimeWindow* win) {
-  int32_t order = pInfo->inputOrder;
+  int32_t order = pInfo->binfo.inputTsOrder;
 
   TSKEY actualEndKey = tsCols[endRowIndex];
   TSKEY key = (order == TSDB_ORDER_ASC) ? win->ekey : win->skey;
@@ -547,7 +547,7 @@ static void doWindowBorderInterpolation(SIntervalAggOperatorInfo* pInfo, SSDataB
   if (!done) {
     int32_t endRowIndex = startPos + forwardRows - 1;
 
-    TSKEY endKey = (pInfo->inputOrder == TSDB_ORDER_ASC) ? pBlock->info.window.ekey : pBlock->info.window.skey;
+    TSKEY endKey = (pInfo->binfo.inputTsOrder == TSDB_ORDER_ASC) ? pBlock->info.window.ekey : pBlock->info.window.skey;
     bool  interp = setTimeWindowInterpolationEndTs(pInfo, pSup, endRowIndex, pBlock->pDataBlock, tsCols, endKey, win);
     if (interp) {
       setResultRowInterpo(pResult, RESULT_ROW_END_INTERP);
@@ -885,12 +885,12 @@ static void hashIntervalAgg(SOperatorInfo* pOperatorInfo, SResultRowInfo* pResul
   int32_t     numOfOutput = pSup->numOfExprs;
   int64_t*    tsCols = extractTsCol(pBlock, pInfo);
   uint64_t    tableGroupId = pBlock->info.id.groupId;
-  bool        ascScan = (pInfo->inputOrder == TSDB_ORDER_ASC);
+  bool        ascScan = (pInfo->binfo.inputTsOrder == TSDB_ORDER_ASC);
   TSKEY       ts = getStartTsKey(&pBlock->info.window, tsCols);
   SResultRow* pResult = NULL;
 
   STimeWindow win =
-      getActiveTimeWindow(pInfo->aggSup.pResultBuf, pResultRowInfo, ts, &pInfo->interval, pInfo->inputOrder);
+      getActiveTimeWindow(pInfo->aggSup.pResultBuf, pResultRowInfo, ts, &pInfo->interval, pInfo->binfo.inputTsOrder);
   int32_t ret = setTimeWindowOutputBuf(pResultRowInfo, &win, (scanFlag == MAIN_SCAN), &pResult, tableGroupId,
                                        pSup->pCtx, numOfOutput, pSup->rowEntryInfoOffset, &pInfo->aggSup, pTaskInfo);
   if (ret != TSDB_CODE_SUCCESS || pResult == NULL) {
@@ -899,7 +899,7 @@ static void hashIntervalAgg(SOperatorInfo* pOperatorInfo, SResultRowInfo* pResul
 
   TSKEY   ekey = ascScan ? win.ekey : win.skey;
   int32_t forwardRows =
-      getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, pInfo->inputOrder);
+      getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, pInfo->binfo.inputTsOrder);
 
   // prev time window not interpolation yet.
   if (pInfo->timeWindowInterpo) {
@@ -926,7 +926,7 @@ static void hashIntervalAgg(SOperatorInfo* pOperatorInfo, SResultRowInfo* pResul
   STimeWindow nextWin = win;
   while (1) {
     int32_t prevEndPos = forwardRows - 1 + startPos;
-    startPos = getNextQualifiedWindow(&pInfo->interval, &nextWin, &pBlock->info, tsCols, prevEndPos, pInfo->inputOrder);
+    startPos = getNextQualifiedWindow(&pInfo->interval, &nextWin, &pBlock->info, tsCols, prevEndPos, pInfo->binfo.inputTsOrder);
     if (startPos < 0) {
       break;
     }
@@ -939,7 +939,7 @@ static void hashIntervalAgg(SOperatorInfo* pOperatorInfo, SResultRowInfo* pResul
 
     ekey = ascScan ? nextWin.ekey : nextWin.skey;
     forwardRows =
-        getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, pInfo->inputOrder);
+        getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, pInfo->binfo.inputTsOrder);
     // window start(end) key interpolation
     doWindowBorderInterpolation(pInfo, pBlock, pResult, &nextWin, startPos, forwardRows, pSup);
     // TODO: add to open window? how to close the open windows after input blocks exhausted?
@@ -1032,7 +1032,7 @@ static int32_t doOpenIntervalAgg(SOperatorInfo* pOperator) {
       break;
     }
 
-    getTableScanInfo(pOperator, &pInfo->inputOrder, &scanFlag, true);
+    pInfo->binfo.pRes->info.scanFlag = scanFlag = pBlock->info.scanFlag;
 
     if (pInfo->scalarSupp.pExprInfo != NULL) {
       SExprSupp* pExprSup = &pInfo->scalarSupp;
@@ -1040,11 +1040,11 @@ static int32_t doOpenIntervalAgg(SOperatorInfo* pOperator) {
     }
 
     // the pDataBlock are always the same one, no need to call this again
-    setInputDataBlock(pSup, pBlock, pInfo->inputOrder, scanFlag, true);
+    setInputDataBlock(pSup, pBlock, pInfo->binfo.inputTsOrder, scanFlag, true);
     hashIntervalAgg(pOperator, &pInfo->binfo.resultRowInfo, pBlock, scanFlag);
   }
 
-  initGroupedResultInfo(&pInfo->groupResInfo, pInfo->aggSup.pResultRowHashTable, pInfo->resultTsOrder);
+  initGroupedResultInfo(&pInfo->groupResInfo, pInfo->aggSup.pResultRowHashTable, pInfo->binfo.outputTsOrder);
   OPTR_SET_OPENED(pOperator);
 
   pOperator->cost.openCost = (taosGetTimestampUs() - st) / 1000.0;
@@ -1158,7 +1158,7 @@ static int32_t openStateWindowAggOptr(SOperatorInfo* pOperator) {
   SExecTaskInfo*            pTaskInfo = pOperator->pTaskInfo;
 
   SExprSupp* pSup = &pOperator->exprSupp;
-  int32_t    order = TSDB_ORDER_ASC;
+  int32_t    order = pInfo->binfo.inputTsOrder;
   int64_t    st = taosGetTimestampUs();
 
   SOperatorInfo* downstream = pOperator->pDownstream[0];
@@ -1168,6 +1168,7 @@ static int32_t openStateWindowAggOptr(SOperatorInfo* pOperator) {
       break;
     }
 
+    pInfo->binfo.pRes->info.scanFlag = pBlock->info.scanFlag;
     setInputDataBlock(pSup, pBlock, order, MAIN_SCAN, true);
     blockDataUpdateTsWindow(pBlock, pInfo->tsSlotId);
 
@@ -1650,8 +1651,8 @@ SOperatorInfo* createIntervalOperatorInfo(SOperatorInfo* downstream, SIntervalPh
   };
 
   pInfo->win = pTaskInfo->window;
-  pInfo->inputOrder = (pPhyNode->window.inputTsOrder == ORDER_ASC) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
-  pInfo->resultTsOrder = (pPhyNode->window.outputTsOrder == ORDER_ASC) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
+  pInfo->binfo.inputTsOrder = pPhyNode->window.node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pPhyNode->window.node.outputTsOrder;
   pInfo->interval = interval;
   pInfo->twAggSup = as;
   pInfo->binfo.mergeResultBlock = pPhyNode->window.mergeDataBlock;
@@ -1802,7 +1803,7 @@ static SSDataBlock* doSessionWindowAgg(SOperatorInfo* pOperator) {
   }
 
   int64_t st = taosGetTimestampUs();
-  int32_t order = TSDB_ORDER_ASC;
+  int32_t order = pInfo->binfo.inputTsOrder;
 
   SOperatorInfo* downstream = pOperator->pDownstream[0];
 
@@ -1812,6 +1813,7 @@ static SSDataBlock* doSessionWindowAgg(SOperatorInfo* pOperator) {
       break;
     }
 
+    pBInfo->pRes->info.scanFlag = pBlock->info.scanFlag;
     // the pDataBlock are always the same one, no need to call this again
     setInputDataBlock(pSup, pBlock, order, MAIN_SCAN, true);
     blockDataUpdateTsWindow(pBlock, pInfo->tsSlotId);
@@ -1872,6 +1874,8 @@ SOperatorInfo* createStatewindowOperatorInfo(SOperatorInfo* downstream, SStateWi
   if (pInfo->stateKey.pData == NULL) {
     goto _error;
   }
+  pInfo->binfo.inputTsOrder = pStateNode->window.node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pStateNode->window.node.outputTsOrder;
 
   int32_t code = filterInitFromNode((SNode*)pStateNode->window.node.pConditions, &pOperator->exprSupp.pFilterInfo, 0);
   if (code != TSDB_CODE_SUCCESS) {
@@ -1970,6 +1974,8 @@ SOperatorInfo* createSessionAggOperatorInfo(SOperatorInfo* downstream, SSessionW
   pInfo->binfo.pRes = pResBlock;
   pInfo->winSup.prevTs = INT64_MIN;
   pInfo->reptScan = false;
+  pInfo->binfo.inputTsOrder = pSessionNode->window.node.inputTsOrder;
+  pInfo->binfo.outputTsOrder = pSessionNode->window.node.outputTsOrder;
   code = filterInitFromNode((SNode*)pSessionNode->window.node.pConditions, &pOperator->exprSupp.pFilterInfo, 0);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
@@ -4318,7 +4324,6 @@ static void doMergeAlignedIntervalAgg(SOperatorInfo* pOperator) {
   SSDataBlock*    pRes = pIaInfo->binfo.pRes;
   SResultRowInfo* pResultRowInfo = &pIaInfo->binfo.resultRowInfo;
   SOperatorInfo*  downstream = pOperator->pDownstream[0];
-  int32_t         scanFlag = MAIN_SCAN;
 
   while (1) {
     SSDataBlock* pBlock = NULL;
@@ -4365,8 +4370,8 @@ static void doMergeAlignedIntervalAgg(SOperatorInfo* pOperator) {
       }
     }
 
-    getTableScanInfo(pOperator, &pIaInfo->inputOrder, &scanFlag, false);
-    setInputDataBlock(pSup, pBlock, pIaInfo->inputOrder, scanFlag, true);
+    pRes->info.scanFlag = pBlock->info.scanFlag;
+    setInputDataBlock(pSup, pBlock, pIaInfo->binfo.inputTsOrder, pBlock->info.scanFlag, true);
     doMergeAlignedIntervalAggImpl(pOperator, &pIaInfo->binfo.resultRowInfo, pBlock, pRes);
 
     doFilter(pRes, pOperator->exprSupp.pFilterInfo, NULL);
@@ -4439,7 +4444,8 @@ SOperatorInfo* createMergeAlignedIntervalOperatorInfo(SOperatorInfo* downstream,
 
   miaInfo->curTs = INT64_MIN;
   iaInfo->win = pTaskInfo->window;
-  iaInfo->inputOrder = TSDB_ORDER_ASC;
+  iaInfo->binfo.inputTsOrder = pNode->window.node.inputTsOrder;
+  iaInfo->binfo.outputTsOrder = pNode->window.node.outputTsOrder;
   iaInfo->interval = interval;
   iaInfo->primaryTsIndex = ((SColumnNode*)pNode->window.pTspk)->slotId;
   iaInfo->binfo.mergeResultBlock = pNode->window.mergeDataBlock;
@@ -4516,7 +4522,7 @@ static int32_t outputPrevIntervalResult(SOperatorInfo* pOperatorInfo, uint64_t t
                                         STimeWindow* newWin) {
   SMergeIntervalAggOperatorInfo* miaInfo = pOperatorInfo->info;
   SIntervalAggOperatorInfo*      iaInfo = &miaInfo->intervalAggOperatorInfo;
-  bool                           ascScan = (iaInfo->inputOrder == TSDB_ORDER_ASC);
+  bool                           ascScan = (iaInfo->binfo.inputTsOrder == TSDB_ORDER_ASC);
 
   SGroupTimeWindow groupTimeWindow = {.groupId = tableGroupId, .window = *newWin};
   tdListAppend(miaInfo->groupIntervals, &groupTimeWindow);
@@ -4551,12 +4557,12 @@ static void doMergeIntervalAggImpl(SOperatorInfo* pOperatorInfo, SResultRowInfo*
   int32_t     numOfOutput = pExprSup->numOfExprs;
   int64_t*    tsCols = extractTsCol(pBlock, iaInfo);
   uint64_t    tableGroupId = pBlock->info.id.groupId;
-  bool        ascScan = (iaInfo->inputOrder == TSDB_ORDER_ASC);
+  bool        ascScan = (iaInfo->binfo.inputTsOrder == TSDB_ORDER_ASC);
   TSKEY       blockStartTs = getStartTsKey(&pBlock->info.window, tsCols);
   SResultRow* pResult = NULL;
 
   STimeWindow win = getActiveTimeWindow(iaInfo->aggSup.pResultBuf, pResultRowInfo, blockStartTs, &iaInfo->interval,
-                                        iaInfo->inputOrder);
+                                        iaInfo->binfo.inputTsOrder);
 
   int32_t ret =
       setTimeWindowOutputBuf(pResultRowInfo, &win, (scanFlag == MAIN_SCAN), &pResult, tableGroupId, pExprSup->pCtx,
@@ -4567,7 +4573,7 @@ static void doMergeIntervalAggImpl(SOperatorInfo* pOperatorInfo, SResultRowInfo*
 
   TSKEY   ekey = ascScan ? win.ekey : win.skey;
   int32_t forwardRows =
-      getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, iaInfo->inputOrder);
+      getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, iaInfo->binfo.inputTsOrder);
   ASSERT(forwardRows > 0);
 
   // prev time window not interpolation yet.
@@ -4598,7 +4604,7 @@ static void doMergeIntervalAggImpl(SOperatorInfo* pOperatorInfo, SResultRowInfo*
   while (1) {
     int32_t prevEndPos = forwardRows - 1 + startPos;
     startPos =
-        getNextQualifiedWindow(&iaInfo->interval, &nextWin, &pBlock->info, tsCols, prevEndPos, iaInfo->inputOrder);
+        getNextQualifiedWindow(&iaInfo->interval, &nextWin, &pBlock->info, tsCols, prevEndPos, iaInfo->binfo.inputTsOrder);
     if (startPos < 0) {
       break;
     }
@@ -4613,7 +4619,7 @@ static void doMergeIntervalAggImpl(SOperatorInfo* pOperatorInfo, SResultRowInfo*
 
     ekey = ascScan ? nextWin.ekey : nextWin.skey;
     forwardRows =
-        getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, iaInfo->inputOrder);
+        getNumOfRowsInTimeWindow(&pBlock->info, tsCols, startPos, ekey, binarySearchForKey, NULL, iaInfo->binfo.inputTsOrder);
 
     // window start(end) key interpolation
     doWindowBorderInterpolation(iaInfo, pBlock, pResult, &nextWin, startPos, forwardRows, pExprSup);
@@ -4649,7 +4655,6 @@ static SSDataBlock* doMergeIntervalAgg(SOperatorInfo* pOperator) {
 
   if (!miaInfo->inputBlocksFinished) {
     SOperatorInfo* downstream = pOperator->pDownstream[0];
-    int32_t        scanFlag = MAIN_SCAN;
     while (1) {
       SSDataBlock* pBlock = NULL;
       if (miaInfo->prefetchedBlock == NULL) {
@@ -4674,9 +4679,9 @@ static SSDataBlock* doMergeIntervalAgg(SOperatorInfo* pOperator) {
         break;
       }
 
-      getTableScanInfo(pOperator, &iaInfo->inputOrder, &scanFlag, false);
-      setInputDataBlock(pExpSupp, pBlock, iaInfo->inputOrder, scanFlag, true);
-      doMergeIntervalAggImpl(pOperator, &iaInfo->binfo.resultRowInfo, pBlock, scanFlag, pRes);
+      pRes->info.scanFlag = pBlock->info.scanFlag;
+      setInputDataBlock(pExpSupp, pBlock, iaInfo->binfo.inputTsOrder, pBlock->info.scanFlag, true);
+      doMergeIntervalAggImpl(pOperator, &iaInfo->binfo.resultRowInfo, pBlock, pBlock->info.scanFlag, pRes);
 
       if (pRes->info.rows >= pOperator->resultInfo.threshold) {
         break;
@@ -4726,10 +4731,11 @@ SOperatorInfo* createMergeIntervalOperatorInfo(SOperatorInfo* downstream, SMerge
 
   SIntervalAggOperatorInfo* pIntervalInfo = &pMergeIntervalInfo->intervalAggOperatorInfo;
   pIntervalInfo->win = pTaskInfo->window;
-  pIntervalInfo->inputOrder = TSDB_ORDER_ASC;
+  pIntervalInfo->binfo.inputTsOrder = pIntervalPhyNode->window.node.inputTsOrder;
   pIntervalInfo->interval = interval;
   pIntervalInfo->binfo.mergeResultBlock = pIntervalPhyNode->window.mergeDataBlock;
   pIntervalInfo->primaryTsIndex = ((SColumnNode*)pIntervalPhyNode->window.pTspk)->slotId;
+  pIntervalInfo->binfo.outputTsOrder = pIntervalPhyNode->window.node.outputTsOrder;
 
   SExprSupp* pExprSupp = &pOperator->exprSupp;
 

source/libs/executor/src/tsort.c

@@ -887,6 +887,7 @@ void* tsortGetValue(STupleHandle* pVHandle, int32_t colIndex) {
 }
 
 uint64_t tsortGetGroupId(STupleHandle* pVHandle) { return pVHandle->pBlock->info.id.groupId; }
+void*    tsortGetBlockInfo(STupleHandle* pVHandle) { return &pVHandle->pBlock->info; }
 
 SSortExecInfo tsortGetSortExecInfo(SSortHandle* pHandle) {
   SSortExecInfo info = {0};

source/libs/nodes/src/nodesCloneFuncs.c

@@ -110,6 +110,7 @@ static int32_t columnNodeCopy(const SColumnNode* pSrc, SColumnNode* pDst) {
   COPY_SCALAR_FIELD(tableId);
   COPY_SCALAR_FIELD(tableType);
   COPY_SCALAR_FIELD(colId);
+  COPY_SCALAR_FIELD(projIdx);
   COPY_SCALAR_FIELD(colType);
   COPY_SCALAR_FIELD(hasIndex);
   COPY_CHAR_ARRAY_FIELD(dbName);
@@ -358,6 +359,8 @@ static int32_t logicNodeCopy(const SLogicNode* pSrc, SLogicNode* pDst) {
   COPY_SCALAR_FIELD(requireDataOrder);
   COPY_SCALAR_FIELD(resultDataOrder);
   COPY_SCALAR_FIELD(groupAction);
+  COPY_SCALAR_FIELD(inputTsOrder);
+  COPY_SCALAR_FIELD(outputTsOrder);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -404,7 +407,6 @@ static int32_t logicJoinCopy(const SJoinLogicNode* pSrc, SJoinLogicNode* pDst) {
   CLONE_NODE_FIELD(pOnConditions);
   CLONE_NODE_FIELD(pColEqualOnConditions);
   COPY_SCALAR_FIELD(isSingleTableJoin);
-  COPY_SCALAR_FIELD(inputTsOrder);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -482,8 +484,6 @@ static int32_t logicWindowCopy(const SWindowLogicNode* pSrc, SWindowLogicNode* p
   COPY_SCALAR_FIELD(igExpired);
   COPY_SCALAR_FIELD(igCheckUpdate);
   COPY_SCALAR_FIELD(windowAlgo);
-  COPY_SCALAR_FIELD(inputTsOrder);
-  COPY_SCALAR_FIELD(outputTsOrder);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -495,7 +495,6 @@ static int32_t logicFillCopy(const SFillLogicNode* pSrc, SFillLogicNode* pDst) {
   CLONE_NODE_FIELD(pWStartTs);
   CLONE_NODE_FIELD(pValues);
   COPY_OBJECT_FIELD(timeRange, sizeof(STimeWindow));
-  COPY_SCALAR_FIELD(inputTsOrder);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -544,6 +543,8 @@ static int32_t physiNodeCopy(const SPhysiNode* pSrc, SPhysiNode* pDst) {
   CLONE_NODE_FIELD_EX(pOutputDataBlockDesc, SDataBlockDescNode*);
   CLONE_NODE_FIELD(pConditions);
   CLONE_NODE_LIST_FIELD(pChildren);
+  COPY_SCALAR_FIELD(inputTsOrder);
+  COPY_SCALAR_FIELD(outputTsOrder);
   return TSDB_CODE_SUCCESS;
 }
 

source/libs/nodes/src/nodesCodeFuncs.c

@@ -1904,9 +1904,6 @@ static int32_t physiJoinNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddIntegerToObject(pJson, jkJoinPhysiPlanJoinType, pNode->joinType);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonAddIntegerToObject(pJson, jkJoinPhysiPlanInputTsOrder, pNode->inputTsOrder);
-  }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddObject(pJson, jkJoinPhysiPlanMergeCondition, nodeToJson, pNode->pMergeCondition);
   }
@@ -1929,9 +1926,6 @@ static int32_t jsonToPhysiJoinNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkJoinPhysiPlanJoinType, pNode->joinType, code);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    tjsonGetNumberValue(pJson, jkJoinPhysiPlanInputTsOrder, pNode->inputTsOrder, code);
-  }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkJoinPhysiPlanOnConditions, &pNode->pOnConditions);
   }
@@ -2150,7 +2144,6 @@ static const char* jkWindowPhysiPlanWatermark = "Watermark";
 static const char* jkWindowPhysiPlanDeleteMark = "DeleteMark";
 static const char* jkWindowPhysiPlanIgnoreExpired = "IgnoreExpired";
 static const char* jkWindowPhysiPlanInputTsOrder = "InputTsOrder";
-static const char* jkWindowPhysiPlanOutputTsOrder = "outputTsOrder";
 static const char* jkWindowPhysiPlanMergeDataBlock = "MergeDataBlock";
 
 static int32_t physiWindowNodeToJson(const void* pObj, SJson* pJson) {
@@ -2181,12 +2174,6 @@ static int32_t physiWindowNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddIntegerToObject(pJson, jkWindowPhysiPlanIgnoreExpired, pNode->igExpired);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonAddIntegerToObject(pJson, jkWindowPhysiPlanInputTsOrder, pNode->inputTsOrder);
-  }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonAddIntegerToObject(pJson, jkWindowPhysiPlanOutputTsOrder, pNode->outputTsOrder);
-  }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddBoolToObject(pJson, jkWindowPhysiPlanMergeDataBlock, pNode->mergeDataBlock);
   }
@@ -2222,12 +2209,6 @@ static int32_t jsonToPhysiWindowNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetTinyIntValue(pJson, jkWindowPhysiPlanIgnoreExpired, &pNode->igExpired);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    tjsonGetNumberValue(pJson, jkWindowPhysiPlanInputTsOrder, pNode->inputTsOrder, code);
-  }
-  if (TSDB_CODE_SUCCESS == code) {
-    tjsonGetNumberValue(pJson, jkWindowPhysiPlanOutputTsOrder, pNode->outputTsOrder, code);
-  }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetBoolValue(pJson, jkWindowPhysiPlanMergeDataBlock, &pNode->mergeDataBlock);
   }
@@ -2294,7 +2275,6 @@ static const char* jkFillPhysiPlanWStartTs = "WStartTs";
 static const char* jkFillPhysiPlanValues = "Values";
 static const char* jkFillPhysiPlanStartTime = "StartTime";
 static const char* jkFillPhysiPlanEndTime = "EndTime";
-static const char* jkFillPhysiPlanInputTsOrder = "inputTsOrder";
 
 static int32_t physiFillNodeToJson(const void* pObj, SJson* pJson) {
   const SFillPhysiNode* pNode = (const SFillPhysiNode*)pObj;
@@ -2321,9 +2301,6 @@ static int32_t physiFillNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddIntegerToObject(pJson, jkFillPhysiPlanEndTime, pNode->timeRange.ekey);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonAddIntegerToObject(pJson, jkFillPhysiPlanInputTsOrder, pNode->inputTsOrder);
-  }
 
   return code;
 }
@@ -2353,9 +2330,6 @@ static int32_t jsonToPhysiFillNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetBigIntValue(pJson, jkFillPhysiPlanEndTime, &pNode->timeRange.ekey);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    tjsonGetNumberValue(pJson, jkFillPhysiPlanInputTsOrder, pNode->inputTsOrder, code);
-  }
 
   return code;
 }
@@ -3053,6 +3027,7 @@ static const char* jkColumnTableId = "TableId";
 static const char* jkColumnTableType = "TableType";
 static const char* jkColumnColId = "ColId";
 static const char* jkColumnColType = "ColType";
+static const char* jkColumnProjId = "ProjId";
 static const char* jkColumnDbName = "DbName";
 static const char* jkColumnTableName = "TableName";
 static const char* jkColumnTableAlias = "TableAlias";
@@ -3073,6 +3048,9 @@ static int32_t columnNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddIntegerToObject(pJson, jkColumnColId, pNode->colId);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkColumnProjId, pNode->projIdx);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddIntegerToObject(pJson, jkColumnColType, pNode->colType);
   }
@@ -3111,6 +3089,9 @@ static int32_t jsonToColumnNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetSmallIntValue(pJson, jkColumnColId, &pNode->colId);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetSmallIntValue(pJson, jkColumnProjId, &pNode->projIdx);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkColumnColType, pNode->colType, code);
   }

source/libs/nodes/src/nodesMsgFuncs.c

@@ -1851,7 +1851,9 @@ enum {
   PHY_NODE_CODE_CONDITIONS,
   PHY_NODE_CODE_CHILDREN,
   PHY_NODE_CODE_LIMIT,
-  PHY_NODE_CODE_SLIMIT
+  PHY_NODE_CODE_SLIMIT,
+  PHY_NODE_CODE_INPUT_TS_ORDER,
+  PHY_NODE_CODE_OUTPUT_TS_ORDER
 };
 
 static int32_t physiNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
@@ -1870,6 +1872,12 @@ static int32_t physiNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeObj(pEncoder, PHY_NODE_CODE_SLIMIT, nodeToMsg, pNode->pSlimit);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeEnum(pEncoder, PHY_NODE_CODE_INPUT_TS_ORDER, pNode->inputTsOrder);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeEnum(pEncoder, PHY_NODE_CODE_OUTPUT_TS_ORDER, pNode->outputTsOrder);
+  }
 
   return code;
 }
@@ -1896,6 +1904,12 @@ static int32_t msgToPhysiNode(STlvDecoder* pDecoder, void* pObj) {
       case PHY_NODE_CODE_SLIMIT:
         code = msgToNodeFromTlv(pTlv, (void**)&pNode->pSlimit);
         break;
+      case PHY_NODE_CODE_INPUT_TS_ORDER:
+        code = tlvDecodeEnum(pTlv, &pNode->inputTsOrder, sizeof(pNode->inputTsOrder));
+        break;
+      case PHY_NODE_CODE_OUTPUT_TS_ORDER:
+        code = tlvDecodeEnum(pTlv, &pNode->outputTsOrder, sizeof(pNode->outputTsOrder));
+        break;
       default:
         break;
     }
@@ -2339,9 +2353,6 @@ static int32_t physiJoinNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeObj(pEncoder, PHY_SORT_MERGE_JOIN_CODE_TARGETS, nodeListToMsg, pNode->pTargets);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeEnum(pEncoder, PHY_SORT_MERGE_JOIN_CODE_INPUT_TS_ORDER, pNode->inputTsOrder);
-  }
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeObj(pEncoder, PHY_SORT_MERGE_JOIN_CODE_TAG_EQUAL_CONDITIONS, nodeToMsg, pNode->pColEqualOnConditions);
   }
@@ -2370,9 +2381,6 @@ static int32_t msgToPhysiJoinNode(STlvDecoder* pDecoder, void* pObj) {
       case PHY_SORT_MERGE_JOIN_CODE_TARGETS:
         code = msgToNodeListFromTlv(pTlv, (void**)&pNode->pTargets);
         break;
-      case PHY_SORT_MERGE_JOIN_CODE_INPUT_TS_ORDER:
-        code = tlvDecodeEnum(pTlv, &pNode->inputTsOrder, sizeof(pNode->inputTsOrder));
-        break;
       case PHY_SORT_MERGE_JOIN_CODE_TAG_EQUAL_CONDITIONS:
         code = msgToNodeFromTlv(pTlv, (void**)&pNode->pColEqualOnConditions);
         break;
@@ -2675,12 +2683,6 @@ static int32_t physiWindowNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeI8(pEncoder, PHY_WINDOW_CODE_IG_EXPIRED, pNode->igExpired);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeEnum(pEncoder, PHY_WINDOW_CODE_INPUT_TS_ORDER, pNode->inputTsOrder);
-  }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeEnum(pEncoder, PHY_WINDOW_CODE_OUTPUT_TS_ORDER, pNode->outputTsOrder);
-  }
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeBool(pEncoder, PHY_WINDOW_CODE_MERGE_DATA_BLOCK, pNode->mergeDataBlock);
   }
@@ -2722,12 +2724,6 @@ static int32_t msgToPhysiWindowNode(STlvDecoder* pDecoder, void* pObj) {
       case PHY_WINDOW_CODE_IG_EXPIRED:
         code = tlvDecodeI8(pTlv, &pNode->igExpired);
         break;
-      case PHY_WINDOW_CODE_INPUT_TS_ORDER:
-        code = tlvDecodeEnum(pTlv, &pNode->inputTsOrder, sizeof(pNode->inputTsOrder));
-        break;
-      case PHY_WINDOW_CODE_OUTPUT_TS_ORDER:
-        code = tlvDecodeEnum(pTlv, &pNode->outputTsOrder, sizeof(pNode->outputTsOrder));
-        break;
       case PHY_WINDOW_CODE_MERGE_DATA_BLOCK:
         code = tlvDecodeBool(pTlv, &pNode->mergeDataBlock);
         break;
@@ -2846,9 +2842,6 @@ static int32_t physiFillNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeObj(pEncoder, PHY_FILL_CODE_TIME_RANGE, timeWindowToMsg, &pNode->timeRange);
   }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeEnum(pEncoder, PHY_FILL_CODE_INPUT_TS_ORDER, pNode->inputTsOrder);
-  }
 
   return code;
 }
@@ -2881,9 +2874,6 @@ static int32_t msgToPhysiFillNode(STlvDecoder* pDecoder, void* pObj) {
       case PHY_FILL_CODE_TIME_RANGE:
         code = tlvDecodeObjFromTlv(pTlv, msgToTimeWindow, (void**)&pNode->timeRange);
         break;
-      case PHY_FILL_CODE_INPUT_TS_ORDER:
-        code = tlvDecodeEnum(pTlv, &pNode->inputTsOrder, sizeof(pNode->inputTsOrder));
-        break;
       default:
         break;
     }

source/libs/planner/src/planLogicCreater.c

@@ -436,7 +436,7 @@ static int32_t createJoinLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
 
   pJoin->joinType = pJoinTable->joinType;
   pJoin->isSingleTableJoin = pJoinTable->table.singleTable;
-  pJoin->inputTsOrder = ORDER_ASC;
+  pJoin->node.inputTsOrder = ORDER_ASC;
   pJoin->node.groupAction = GROUP_ACTION_CLEAR;
   pJoin->node.requireDataOrder = DATA_ORDER_LEVEL_GLOBAL;
   pJoin->node.resultDataOrder = DATA_ORDER_LEVEL_GLOBAL;
@@ -741,8 +741,8 @@ static int32_t createWindowLogicNodeFinalize(SLogicPlanContext* pCxt, SSelectStm
     pWindow->igExpired = pCxt->pPlanCxt->igExpired;
     pWindow->igCheckUpdate = pCxt->pPlanCxt->igCheckUpdate;
   }
-  pWindow->inputTsOrder = ORDER_ASC;
-  pWindow->outputTsOrder = ORDER_ASC;
+  pWindow->node.inputTsOrder = ORDER_ASC;
+  pWindow->node.outputTsOrder = ORDER_ASC;
 
   int32_t code = nodesCollectFuncs(pSelect, SQL_CLAUSE_WINDOW, fmIsWindowClauseFunc, &pWindow->pFuncs);
   if (TSDB_CODE_SUCCESS == code) {
@@ -972,7 +972,7 @@ static int32_t createFillLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
   pFill->node.groupAction = getGroupAction(pCxt, pSelect);
   pFill->node.requireDataOrder = getRequireDataOrder(true, pSelect);
   pFill->node.resultDataOrder = pFill->node.requireDataOrder;
-  pFill->inputTsOrder = ORDER_ASC;
+  pFill->node.inputTsOrder = 0;
 
   int32_t code = partFillExprs(pSelect, &pFill->pFillExprs, &pFill->pNotFillExprs);
   if (TSDB_CODE_SUCCESS == code) {
@@ -1045,6 +1045,19 @@ static int32_t createSortLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
     if (NULL == pSort->pSortKeys) {
       code = TSDB_CODE_OUT_OF_MEMORY;
     }
+    SNode*            pNode = NULL;
+    SOrderByExprNode* firstSortKey = (SOrderByExprNode*)nodesListGetNode(pSort->pSortKeys, 0);
+    if (firstSortKey->pExpr->type == QUERY_NODE_COLUMN) {
+      SColumnNode* pCol = (SColumnNode*)firstSortKey->pExpr;
+      int16_t      projIdx = 1;
+      FOREACH(pNode, pSelect->pProjectionList) {
+        SExprNode* pExpr = (SExprNode*)pNode;
+        if (0 == strcmp(pCol->node.aliasName, pExpr->aliasName)) {
+          pCol->projIdx = projIdx; break;
+        }
+        projIdx++;
+      }
+    }
   }
 
   if (TSDB_CODE_SUCCESS == code) {

source/libs/planner/src/planOptimizer.c

@@ -116,25 +116,33 @@ static EDealRes optRebuildTbanme(SNode** pNode, void* pContext) {
   return DEAL_RES_CONTINUE;
 }
 
-static void optSetParentOrder(SLogicNode* pNode, EOrder order) {
+static void optSetParentOrder(SLogicNode* pNode, EOrder order, SLogicNode* pNodeForcePropagate) {
   if (NULL == pNode) {
     return;
   }
+  pNode->inputTsOrder = order;
   switch (nodeType(pNode)) {
-    case QUERY_NODE_LOGIC_PLAN_WINDOW:
-      ((SWindowLogicNode*)pNode)->inputTsOrder = order;
-      // window has a sorting function, and the operator behind it uses its output order
-      return;
+    // for those nodes that will change the order, stop propagating
+    //case QUERY_NODE_LOGIC_PLAN_WINDOW:
     case QUERY_NODE_LOGIC_PLAN_JOIN:
-      ((SJoinLogicNode*)pNode)->inputTsOrder = order;
-      break;
-    case QUERY_NODE_LOGIC_PLAN_FILL:
-      ((SFillLogicNode*)pNode)->inputTsOrder = order;
+    case QUERY_NODE_LOGIC_PLAN_AGG:
+    case QUERY_NODE_LOGIC_PLAN_SORT:
+      if (pNode == pNodeForcePropagate) {
+        pNode->outputTsOrder = order;
+        break;
+      } else
+        return;
+    case QUERY_NODE_LOGIC_PLAN_WINDOW:
+      // Window output ts order default to be asc, and changed when doing sort by primary key optimization.
+      // We stop propagate the original order to parents.
+      // Use window output ts order instead.
+      order = pNode->outputTsOrder;
       break;
     default:
+      pNode->outputTsOrder = order;
       break;
   }
-  optSetParentOrder(pNode->pParent, order);
+  optSetParentOrder(pNode->pParent, order, pNodeForcePropagate);
 }
 
 EDealRes scanPathOptHaveNormalColImpl(SNode* pNode, void* pContext) {
@@ -339,12 +347,12 @@ static void scanPathOptSetScanOrder(EScanOrder scanOrder, SScanLogicNode* pScan)
     case SCAN_ORDER_ASC:
       pScan->scanSeq[0] = 1;
       pScan->scanSeq[1] = 0;
-      optSetParentOrder(pScan->node.pParent, ORDER_ASC);
+      optSetParentOrder(pScan->node.pParent, ORDER_ASC, NULL);
       break;
     case SCAN_ORDER_DESC:
       pScan->scanSeq[0] = 0;
       pScan->scanSeq[1] = 1;
-      optSetParentOrder(pScan->node.pParent, ORDER_DESC);
+      optSetParentOrder(pScan->node.pParent, ORDER_DESC, NULL);
       break;
     case SCAN_ORDER_BOTH:
       pScan->scanSeq[0] = 1;
@@ -1239,6 +1247,7 @@ static int32_t sortPriKeyOptApply(SOptimizeContext* pCxt, SLogicSubplan* pLogicS
       if ((ORDER_DESC == order && pScan->scanSeq[0] > 0) || (ORDER_ASC == order && pScan->scanSeq[1] > 0)) {
         TSWAP(pScan->scanSeq[0], pScan->scanSeq[1]);
       }
+      pScan->node.outputTsOrder = order;
       if (TSDB_SUPER_TABLE == pScan->tableType) {
         pScan->scanType = SCAN_TYPE_TABLE_MERGE;
         pScan->node.resultDataOrder = DATA_ORDER_LEVEL_GLOBAL;
@@ -1246,9 +1255,9 @@ static int32_t sortPriKeyOptApply(SOptimizeContext* pCxt, SLogicSubplan* pLogicS
       }
       pScan->sortPrimaryKey = true;
     } else if (QUERY_NODE_LOGIC_PLAN_WINDOW == nodeType(pSequencingNode)) {
-      ((SWindowLogicNode*)pSequencingNode)->outputTsOrder = order;
+      ((SLogicNode*)pSequencingNode)->outputTsOrder = order;
     }
-    optSetParentOrder(((SLogicNode*)pSequencingNode)->pParent, order);
+    optSetParentOrder(((SLogicNode*)pSequencingNode)->pParent, order, (SLogicNode*)pSort);
   }
 
   SLogicNode* pChild = (SLogicNode*)nodesListGetNode(pSort->node.pChildren, 0);
@@ -2881,10 +2890,62 @@ static int32_t tableCountScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLo
   return code;
 }
 
+static SSortLogicNode* sortNonPriKeySatisfied(SLogicNode* pNode) {
+  if (QUERY_NODE_LOGIC_PLAN_SORT != nodeType(pNode)) {
+    return NULL;
+  }
+  SSortLogicNode* pSort = (SSortLogicNode*)pNode;
+  if (sortPriKeyOptIsPriKeyOrderBy(pSort->pSortKeys)) {
+    return NULL;
+  }
+  SNode* pSortKeyNode = NULL, *pSortKeyExpr = NULL;
+  FOREACH(pSortKeyNode, pSort->pSortKeys) {
+    pSortKeyExpr = ((SOrderByExprNode*)pSortKeyNode)->pExpr;
+    switch (nodeType(pSortKeyExpr)) {
+      case QUERY_NODE_COLUMN:
+        break;
+      case QUERY_NODE_VALUE:
+        continue;
+      default:
+        return NULL;
+    }
+  }
+
+  if (!pSortKeyExpr || ((SColumnNode*)pSortKeyExpr)->projIdx != 1 ||
+      ((SColumnNode*)pSortKeyExpr)->node.resType.type != TSDB_DATA_TYPE_TIMESTAMP) {
+    return NULL;
+  }
+  return pSort;
+}
+
+static bool sortNonPriKeyShouldOptimize(SLogicNode* pNode, void* pInfo) {
+  SSortLogicNode* pSort = sortNonPriKeySatisfied(pNode);
+  if (!pSort) return false;
+  SNodeList* pSortNodeList = pInfo;
+  nodesListAppend(pSortNodeList, (SNode*)pSort);
+  return false;
+}
+
+static int32_t sortNonPriKeyOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogicSubplan) {
+  SNodeList* pNodeList = nodesMakeList();
+  optFindEligibleNode(pLogicSubplan->pNode, sortNonPriKeyShouldOptimize, pNodeList);
+  SNode* pNode = NULL;
+  FOREACH(pNode, pNodeList) {
+    SSortLogicNode* pSort = (SSortLogicNode*)pNode;
+    SOrderByExprNode* pOrderByExpr = (SOrderByExprNode*)nodesListGetNode(pSort->pSortKeys, 0);
+    pSort->node.outputTsOrder = pOrderByExpr->order;
+    optSetParentOrder(pSort->node.pParent, pOrderByExpr->order, NULL);
+  }
+  pCxt->optimized = false;
+  nodesClearList(pNodeList);
+  return TSDB_CODE_SUCCESS;
+}
+
 // clang-format off
 static const SOptimizeRule optimizeRuleSet[] = {
   {.pName = "ScanPath",                   .optimizeFunc = scanPathOptimize},
   {.pName = "PushDownCondition",          .optimizeFunc = pushDownCondOptimize},
+  {.pName = "sortNonPriKeyOptimize",      .optimizeFunc = sortNonPriKeyOptimize},
   {.pName = "SortPrimaryKey",             .optimizeFunc = sortPrimaryKeyOptimize},
   {.pName = "SmaIndex",                   .optimizeFunc = smaIndexOptimize},
   {.pName = "PartitionTags",              .optimizeFunc = partTagsOptimize},

source/libs/planner/src/planPhysiCreater.c

@@ -366,6 +366,8 @@ static SPhysiNode* makePhysiNode(SPhysiPlanContext* pCxt, SLogicNode* pLogicNode
 
   TSWAP(pPhysiNode->pLimit, pLogicNode->pLimit);
   TSWAP(pPhysiNode->pSlimit, pLogicNode->pSlimit);
+  pPhysiNode->inputTsOrder = pLogicNode->inputTsOrder;
+  pPhysiNode->outputTsOrder = pLogicNode->outputTsOrder;
 
   int32_t code = createDataBlockDesc(pCxt, pLogicNode->pTargets, &pPhysiNode->pOutputDataBlockDesc);
   if (TSDB_CODE_SUCCESS != code) {
@@ -676,7 +678,7 @@ static int32_t createJoinPhysiNode(SPhysiPlanContext* pCxt, SNodeList* pChildren
   int32_t             code = TSDB_CODE_SUCCESS;
 
   pJoin->joinType = pJoinLogicNode->joinType;
-  pJoin->inputTsOrder = pJoinLogicNode->inputTsOrder;
+  pJoin->node.inputTsOrder = pJoinLogicNode->node.inputTsOrder;
   setNodeSlotId(pCxt, pLeftDesc->dataBlockId, pRightDesc->dataBlockId, pJoinLogicNode->pMergeCondition,
                 &pJoin->pMergeCondition);
   if (TSDB_CODE_SUCCESS == code) {
@@ -939,6 +941,11 @@ static int32_t createIndefRowsFuncPhysiNode(SPhysiPlanContext* pCxt, SNodeList*
   SNodeList* pFuncs = NULL;
   int32_t    code = rewritePrecalcExprs(pCxt, pFuncLogicNode->pFuncs, &pPrecalcExprs, &pFuncs);
 
+  if (pIdfRowsFunc->node.inputTsOrder == 0) {
+    // default to asc
+    pIdfRowsFunc->node.inputTsOrder = TSDB_ORDER_ASC;
+  }
+
   SDataBlockDescNode* pChildTupe = (((SPhysiNode*)nodesListGetNode(pChildren, 0))->pOutputDataBlockDesc);
   // push down expression to pOutputDataBlockDesc of child node
   if (TSDB_CODE_SUCCESS == code && NULL != pPrecalcExprs) {
@@ -1156,9 +1163,12 @@ static int32_t createWindowPhysiNodeFinalize(SPhysiPlanContext* pCxt, SNodeList*
   pWindow->watermark = pWindowLogicNode->watermark;
   pWindow->deleteMark = pWindowLogicNode->deleteMark;
   pWindow->igExpired = pWindowLogicNode->igExpired;
-  pWindow->inputTsOrder = pWindowLogicNode->inputTsOrder;
-  pWindow->outputTsOrder = pWindowLogicNode->outputTsOrder;
   pWindow->mergeDataBlock = (GROUP_ACTION_KEEP == pWindowLogicNode->node.groupAction ? false : true);
+  pWindow->node.inputTsOrder = pWindowLogicNode->node.inputTsOrder;
+  pWindow->node.outputTsOrder = pWindowLogicNode->node.outputTsOrder;
+  if (nodeType(pWindow) == QUERY_NODE_PHYSICAL_PLAN_MERGE_ALIGNED_INTERVAL) {
+    pWindow->node.inputTsOrder = pWindowLogicNode->node.outputTsOrder;
+  }
 
   SNodeList* pPrecalcExprs = NULL;
   SNodeList* pFuncs = NULL;
@@ -1492,7 +1502,7 @@ static int32_t createFillPhysiNode(SPhysiPlanContext* pCxt, SNodeList* pChildren
 
   pFill->mode = pFillNode->mode;
   pFill->timeRange = pFillNode->timeRange;
-  pFill->inputTsOrder = pFillNode->inputTsOrder;
+  pFill->node.inputTsOrder = pFillNode->node.inputTsOrder;
 
   SDataBlockDescNode* pChildTupe = (((SPhysiNode*)nodesListGetNode(pChildren, 0))->pOutputDataBlockDesc);
   int32_t code = setListSlotId(pCxt, pChildTupe->dataBlockId, -1, pFillNode->pFillExprs, &pFill->pFillExprs);

source/libs/planner/src/planSpliter.c

@@ -534,7 +534,9 @@ static int32_t stbSplGetNumOfVgroups(SLogicNode* pNode) {
 
 static int32_t stbSplRewriteFromMergeNode(SMergeLogicNode* pMerge, SLogicNode* pNode) {
   int32_t code = TSDB_CODE_SUCCESS;
-  
+  pMerge->node.inputTsOrder = pNode->outputTsOrder;
+  pMerge->node.outputTsOrder = pNode->outputTsOrder;
+
   switch (nodeType(pNode)) {
     case QUERY_NODE_LOGIC_PLAN_PROJECT: {
       SProjectLogicNode *pLogicNode = (SProjectLogicNode*)pNode;
@@ -631,7 +633,7 @@ static int32_t stbSplSplitIntervalForBatch(SSplitContext* pCxt, SStableSplitInfo
     ((SWindowLogicNode*)pInfo->pSplitNode)->windowAlgo = INTERVAL_ALGO_MERGE;
     SNodeList* pMergeKeys = NULL;
     code = stbSplCreateMergeKeysByPrimaryKey(((SWindowLogicNode*)pInfo->pSplitNode)->pTspk,
-                                             ((SWindowLogicNode*)pInfo->pSplitNode)->outputTsOrder, &pMergeKeys);
+                                             ((SWindowLogicNode*)pInfo->pSplitNode)->node.outputTsOrder, &pMergeKeys);
     if (TSDB_CODE_SUCCESS == code) {
       code = stbSplCreateMergeNode(pCxt, NULL, pInfo->pSplitNode, pMergeKeys, pPartWindow, true);
     }
@@ -721,7 +723,7 @@ static int32_t stbSplSplitSessionOrStateForBatch(SSplitContext* pCxt, SStableSpl
 
   SNodeList* pMergeKeys = NULL;
   int32_t    code = stbSplCreateMergeKeysByPrimaryKey(((SWindowLogicNode*)pWindow)->pTspk,
-                                                      ((SWindowLogicNode*)pWindow)->inputTsOrder, &pMergeKeys);
+                                                      ((SWindowLogicNode*)pWindow)->node.inputTsOrder, &pMergeKeys);
 
   if (TSDB_CODE_SUCCESS == code) {
     code = stbSplCreateMergeNode(pCxt, pInfo->pSubplan, pChild, pMergeKeys, (SLogicNode*)pChild, true);

tests/parallel_test/cases.task

@@ -184,6 +184,7 @@
 ,,y,script,./test.sh -f tsim/query/forceFill.sim
 ,,y,script,./test.sh -f tsim/query/emptyTsRange.sim
 ,,y,script,./test.sh -f tsim/query/partitionby.sim
+,,y,script,./test.sh -f tsim/query/explain_tsorder.sim
 ,,y,script,./test.sh -f tsim/qnode/basic1.sim
 ,,y,script,./test.sh -f tsim/snode/basic1.sim
 ,,y,script,./test.sh -f tsim/mnode/basic1.sim

tests/script/tsim/query/explain_tsorder.sim

+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+sql create database test
+sql use test
+sql CREATE STABLE `meters` (`ts` TIMESTAMP, `c2` INT) TAGS (`cc` VARCHAR(3))
+
+
+sql insert into d1 using meters tags("MY") values("2022-05-15 00:01:08.000 ",234)
+sql insert into d1 using meters tags("MY") values("2022-05-16 00:01:08.000 ",136)
+sql insert into d1 using meters tags("MY") values("2022-05-17 00:01:08.000 ", 59)
+sql insert into d1 using meters tags("MY") values("2022-05-18 00:01:08.000 ", 58)
+sql insert into d1 using meters tags("MY") values("2022-05-19 00:01:08.000 ",243)
+sql insert into d1 using meters tags("MY") values("2022-05-20 00:01:08.000 ",120)
+sql insert into d1 using meters tags("MY") values("2022-05-21 00:01:08.000 ", 11)
+sql insert into d1 using meters tags("MY") values("2022-05-22 00:01:08.000 ",196)
+sql insert into d1 using meters tags("MY") values("2022-05-23 00:01:08.000 ",116)
+sql insert into d1 using meters tags("MY") values("2022-05-24 00:01:08.000 ",210)
+
+sql insert into d2 using meters tags("HT") values("2022-05-15 00:01:08.000", 234)
+sql insert into d2 using meters tags("HT") values("2022-05-16 00:01:08.000", 136)
+sql insert into d2 using meters tags("HT") values("2022-05-17 00:01:08.000",  59)
+sql insert into d2 using meters tags("HT") values("2022-05-18 00:01:08.000",  58)
+sql insert into d2 using meters tags("HT") values("2022-05-19 00:01:08.000", 243)
+sql insert into d2 using meters tags("HT") values("2022-05-20 00:01:08.000", 120)
+sql insert into d2 using meters tags("HT") values("2022-05-21 00:01:08.000",  11)
+sql insert into d2 using meters tags("HT") values("2022-05-22 00:01:08.000", 196)
+sql insert into d2 using meters tags("HT") values("2022-05-23 00:01:08.000", 116)
+sql insert into d2 using meters tags("HT") values("2022-05-24 00:01:08.000", 210)
+
+#sleep 10000000
+system taos -P7100 -s 'source tsim/query/t/explain_tsorder.sql' | grep -v 'Query OK' | grep -v 'Client Version' > /tmp/explain_tsorder.result
+system echo ----------------------diff start-----------------------
+system git diff --exit-code --color tsim/query/r/explain_tsorder.result /tmp/explain_tsorder.result
+system echo ----------------------diff succeed-----------------------

tests/script/tsim/query/r/explain_tsorder.result

+Copyright (c) 2022 by TDengine, all rights reserved.
+
+taos> source tsim/query/t/explain_tsorder.sql
+taos> use test;
+Database changed.
+
+taos> explain verbose true select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=desc output_order=desc)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=24
+*************************** 3.row ***************************
+QUERY_PLAN:       Time Window: interval=10s offset=0a sliding=10s
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> SortMerge (columns=3 width=108 input_order=desc output_order=desc)
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=3 width=108
+*************************** 7.row ***************************
+QUERY_PLAN:          Output: Ignore Group Id: false
+*************************** 8.row ***************************
+QUERY_PLAN:          Merge Key: _group_id asc,  desc
+*************************** 9.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 11.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 13.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 14.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 15.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 17.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 18.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 21.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart asc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=24
+*************************** 3.row ***************************
+QUERY_PLAN:       Time Window: interval=10s offset=0a sliding=10s
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=3 width=108
+*************************** 7.row ***************************
+QUERY_PLAN:          Output: Ignore Group Id: false
+*************************** 8.row ***************************
+QUERY_PLAN:          Merge Key: _group_id asc,  asc
+*************************** 9.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 11.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 13.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 14.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 15.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 17.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 18.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 21.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart asc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=24
+*************************** 3.row ***************************
+QUERY_PLAN:       Time Window: interval=10s offset=0a sliding=10s
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=3 width=108
+*************************** 7.row ***************************
+QUERY_PLAN:          Output: Ignore Group Id: false
+*************************** 8.row ***************************
+QUERY_PLAN:          Merge Key: _group_id asc,  asc
+*************************** 9.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 11.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=asc output_order=asc )
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 13.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 14.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 15.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 17.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 18.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=asc output_order=asc )
+*************************** 21.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 25.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=desc output_order=desc)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=24
+*************************** 3.row ***************************
+QUERY_PLAN:       Time Window: interval=10s offset=0a sliding=10s
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> SortMerge (columns=3 width=108 input_order=desc output_order=desc)
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=3 width=108
+*************************** 7.row ***************************
+QUERY_PLAN:          Output: Ignore Group Id: false
+*************************** 8.row ***************************
+QUERY_PLAN:          Merge Key: _group_id asc,  desc
+*************************** 9.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 11.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=asc output_order=desc )
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 13.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 14.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 15.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 17.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 18.row ***************************
+QUERY_PLAN:       -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:             Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:          -> Interval on Column ts (functions=3 width=108 input_order=asc output_order=desc )
+*************************** 21.row ***************************
+QUERY_PLAN:                Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:             -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 25.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: True
+*************************** 14.row ***************************
+QUERY_PLAN:             -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=108
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: Ignore Group Id: false
+*************************** 17.row ***************************
+QUERY_PLAN:                   Merge Key: _group_id asc,  asc
+*************************** 18.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 27.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 28.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 32.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 33.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 34.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: True
+*************************** 14.row ***************************
+QUERY_PLAN:             -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=108
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: Ignore Group Id: false
+*************************** 17.row ***************************
+QUERY_PLAN:                   Merge Key: _group_id asc,  asc
+*************************** 18.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 27.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 28.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 32.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 33.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 34.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: True
+*************************** 14.row ***************************
+QUERY_PLAN:             -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=108
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: Ignore Group Id: false
+*************************** 17.row ***************************
+QUERY_PLAN:                   Merge Key: _group_id asc,  asc
+*************************** 18.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 27.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 28.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 32.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 33.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 34.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=desc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=desc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=desc output_order=desc)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: True
+*************************** 14.row ***************************
+QUERY_PLAN:             -> SortMerge (columns=3 width=108 input_order=desc output_order=desc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=108
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: Ignore Group Id: false
+*************************** 17.row ***************************
+QUERY_PLAN:                   Merge Key: _group_id asc,  desc
+*************************** 18.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 27.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 28.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 32.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 33.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 34.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: True
+*************************** 14.row ***************************
+QUERY_PLAN:             -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=108
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: Ignore Group Id: false
+*************************** 17.row ***************************
+QUERY_PLAN:                   Merge Key: _group_id asc,  asc
+*************************** 18.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 27.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 28.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 32.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 33.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 34.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=desc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=desc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=desc output_order=desc)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Time Window: interval=10s offset=0a sliding=10s
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: True
+*************************** 14.row ***************************
+QUERY_PLAN:             -> SortMerge (columns=3 width=108 input_order=desc output_order=desc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=108
+*************************** 16.row ***************************
+QUERY_PLAN:                   Output: Ignore Group Id: false
+*************************** 17.row ***************************
+QUERY_PLAN:                   Merge Key: _group_id asc,  desc
+*************************** 18.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 19.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 23.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 24.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 25.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 26.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 27.row ***************************
+QUERY_PLAN:                -> Data Exchange 1:1 (width=108)
+*************************** 28.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                         Time Window: interval=10s offset=0a sliding=10s
+*************************** 32.row ***************************
+QUERY_PLAN:                         Merge ResBlocks: False
+*************************** 33.row ***************************
+QUERY_PLAN:                      -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 34.row ***************************
+QUERY_PLAN:                            Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                            Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=8 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=16 groups=1 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=16 groups=1 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=16 groups=1 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Aggragate (functions=1 width=16 groups=1 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=1 width=8
+*************************** 5.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=3 width=24
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: True
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 13.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 14.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 15.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 16.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 18.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 19.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 20.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 21.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 22.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 24.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 25.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 27.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 29.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 30.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 31.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 32.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 33.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 34.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 35.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 36.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) where a > 10000 and a < 20000 interval(10s) fill(NULL) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Fill (mode=null width=24 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=2 width=16
+*************************** 5.row ***************************
+QUERY_PLAN:          Time Range: [10001, 19999]
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Interval on Column a (functions=2 width=16 input_order=asc output_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=2 width=16
+*************************** 8.row ***************************
+QUERY_PLAN:             Time Window: interval=10s offset=0a sliding=10s
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Projection (columns=3 width=24 input_order=unknown )
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: true
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 16.row ***************************
+QUERY_PLAN:                -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=24
+*************************** 18.row ***************************
+QUERY_PLAN:                      Time Window: interval=10s offset=0a sliding=10s
+*************************** 19.row ***************************
+QUERY_PLAN:                      Filter: ((a > 10000) AND (a < 20000))
+*************************** 20.row ***************************
+QUERY_PLAN:                      Merge ResBlocks: True
+*************************** 21.row ***************************
+QUERY_PLAN:                   -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 22.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 23.row ***************************
+QUERY_PLAN:                         Output: Ignore Group Id: false
+*************************** 24.row ***************************
+QUERY_PLAN:                         Merge Key: _group_id asc,  asc
+*************************** 25.row ***************************
+QUERY_PLAN:                      -> Data Exchange 1:1 (width=108)
+*************************** 26.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 27.row ***************************
+QUERY_PLAN:                         -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 28.row ***************************
+QUERY_PLAN:                               Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                               Time Window: interval=10s offset=0a sliding=10s
+*************************** 30.row ***************************
+QUERY_PLAN:                               Merge ResBlocks: False
+*************************** 31.row ***************************
+QUERY_PLAN:                            -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 32.row ***************************
+QUERY_PLAN:                                  Output: columns=2 width=12
+*************************** 33.row ***************************
+QUERY_PLAN:                                  Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 34.row ***************************
+QUERY_PLAN:                      -> Data Exchange 1:1 (width=108)
+*************************** 35.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 36.row ***************************
+QUERY_PLAN:                         -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 37.row ***************************
+QUERY_PLAN:                               Output: columns=3 width=108
+*************************** 38.row ***************************
+QUERY_PLAN:                               Time Window: interval=10s offset=0a sliding=10s
+*************************** 39.row ***************************
+QUERY_PLAN:                               Merge ResBlocks: False
+*************************** 40.row ***************************
+QUERY_PLAN:                            -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 41.row ***************************
+QUERY_PLAN:                                  Output: columns=2 width=12
+*************************** 42.row ***************************
+QUERY_PLAN:                                  Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > 10000 and a < 20000 interval(10s) fill(NULL) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=asc output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Fill (mode=null width=24 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=2 width=16
+*************************** 5.row ***************************
+QUERY_PLAN:          Time Range: [10001, 19999]
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Interval on Column a (functions=2 width=16 input_order=desc output_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=2 width=16
+*************************** 8.row ***************************
+QUERY_PLAN:             Time Window: interval=10s offset=0a sliding=10s
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Projection (columns=3 width=24 input_order=desc )
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: true
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=desc output_order=desc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 17.row ***************************
+QUERY_PLAN:                   Filter: ((a > 10000) AND (a < 20000))
+*************************** 18.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 19.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=desc output_order=desc)
+*************************** 20.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 21.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 22.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  desc
+*************************** 23.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 24.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 25.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 26.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 27.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 28.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 29.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 30.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 31.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 32.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 33.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 34.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 35.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 36.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 37.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 38.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 39.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 40.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > 10000 and b < 20000 interval(10s) fill(NULL) order by d\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=asc output_order=asc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Fill (mode=null width=24 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=2 width=16
+*************************** 5.row ***************************
+QUERY_PLAN:          Time Range: [10001, 19999]
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Interval on Column b (functions=2 width=16 input_order=desc output_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=2 width=16
+*************************** 8.row ***************************
+QUERY_PLAN:             Time Window: interval=10s offset=0a sliding=10s
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Projection (columns=2 width=16 input_order=desc )
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=2 width=16
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: true
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Sort input_order=asc output_order=desc  (columns=2 width=16)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=16
+*************************** 16.row ***************************
+QUERY_PLAN:                -> Merge Aligned Interval on Column  (functions=2 width=16 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=16
+*************************** 18.row ***************************
+QUERY_PLAN:                      Time Window: interval=10s offset=0a sliding=10s
+*************************** 19.row ***************************
+QUERY_PLAN:                      Filter: ((b > 10000) AND (b < 20000))
+*************************** 20.row ***************************
+QUERY_PLAN:                      Merge ResBlocks: True
+*************************** 21.row ***************************
+QUERY_PLAN:                   -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 22.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 23.row ***************************
+QUERY_PLAN:                         Output: Ignore Group Id: false
+*************************** 24.row ***************************
+QUERY_PLAN:                         Merge Key: _group_id asc,  asc
+*************************** 25.row ***************************
+QUERY_PLAN:                      -> Data Exchange 1:1 (width=108)
+*************************** 26.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 27.row ***************************
+QUERY_PLAN:                         -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 28.row ***************************
+QUERY_PLAN:                               Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                               Time Window: interval=10s offset=0a sliding=10s
+*************************** 30.row ***************************
+QUERY_PLAN:                               Merge ResBlocks: False
+*************************** 31.row ***************************
+QUERY_PLAN:                            -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 32.row ***************************
+QUERY_PLAN:                                  Output: columns=2 width=12
+*************************** 33.row ***************************
+QUERY_PLAN:                                  Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 34.row ***************************
+QUERY_PLAN:                      -> Data Exchange 1:1 (width=108)
+*************************** 35.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 36.row ***************************
+QUERY_PLAN:                         -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 37.row ***************************
+QUERY_PLAN:                               Output: columns=3 width=108
+*************************** 38.row ***************************
+QUERY_PLAN:                               Time Window: interval=10s offset=0a sliding=10s
+*************************** 39.row ***************************
+QUERY_PLAN:                               Merge ResBlocks: False
+*************************** 40.row ***************************
+QUERY_PLAN:                            -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 41.row ***************************
+QUERY_PLAN:                                  Output: columns=2 width=12
+*************************** 42.row ***************************
+QUERY_PLAN:                                  Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > 10000 and b < 20000 interval(10s) fill(NULL) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=asc output_order=desc  (columns=1 width=8)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=1 width=8
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Fill (mode=null width=24 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=2 width=16
+*************************** 5.row ***************************
+QUERY_PLAN:          Time Range: [10001, 19999]
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Interval on Column b (functions=2 width=16 input_order=desc output_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=2 width=16
+*************************** 8.row ***************************
+QUERY_PLAN:             Time Window: interval=10s offset=0a sliding=10s
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Projection (columns=2 width=16 input_order=desc )
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=2 width=16
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: true
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Sort input_order=asc output_order=desc  (columns=2 width=16)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=16
+*************************** 16.row ***************************
+QUERY_PLAN:                -> Merge Aligned Interval on Column  (functions=2 width=16 input_order=asc output_order=asc)
+*************************** 17.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=16
+*************************** 18.row ***************************
+QUERY_PLAN:                      Time Window: interval=10s offset=0a sliding=10s
+*************************** 19.row ***************************
+QUERY_PLAN:                      Filter: ((b > 10000) AND (b < 20000))
+*************************** 20.row ***************************
+QUERY_PLAN:                      Merge ResBlocks: True
+*************************** 21.row ***************************
+QUERY_PLAN:                   -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 22.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 23.row ***************************
+QUERY_PLAN:                         Output: Ignore Group Id: false
+*************************** 24.row ***************************
+QUERY_PLAN:                         Merge Key: _group_id asc,  asc
+*************************** 25.row ***************************
+QUERY_PLAN:                      -> Data Exchange 1:1 (width=108)
+*************************** 26.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 27.row ***************************
+QUERY_PLAN:                         -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 28.row ***************************
+QUERY_PLAN:                               Output: columns=3 width=108
+*************************** 29.row ***************************
+QUERY_PLAN:                               Time Window: interval=10s offset=0a sliding=10s
+*************************** 30.row ***************************
+QUERY_PLAN:                               Merge ResBlocks: False
+*************************** 31.row ***************************
+QUERY_PLAN:                            -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 32.row ***************************
+QUERY_PLAN:                                  Output: columns=2 width=12
+*************************** 33.row ***************************
+QUERY_PLAN:                                  Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 34.row ***************************
+QUERY_PLAN:                      -> Data Exchange 1:1 (width=108)
+*************************** 35.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 36.row ***************************
+QUERY_PLAN:                         -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 37.row ***************************
+QUERY_PLAN:                               Output: columns=3 width=108
+*************************** 38.row ***************************
+QUERY_PLAN:                               Time Window: interval=10s offset=0a sliding=10s
+*************************** 39.row ***************************
+QUERY_PLAN:                               Merge ResBlocks: False
+*************************** 40.row ***************************
+QUERY_PLAN:                            -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 41.row ***************************
+QUERY_PLAN:                                  Output: columns=2 width=12
+*************************** 42.row ***************************
+QUERY_PLAN:                                  Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart desc;
+         _wstart         |        last(ts)         |          avg(c2)          |
+================================================================================
+ 2022-05-24 00:01:00.000 | 2022-05-24 00:01:08.000 |             210.000000000 |
+ 2022-05-23 00:01:00.000 | 2022-05-23 00:01:08.000 |             116.000000000 |
+ 2022-05-22 00:01:00.000 | 2022-05-22 00:01:08.000 |             196.000000000 |
+ 2022-05-21 00:01:00.000 | 2022-05-21 00:01:08.000 |              11.000000000 |
+ 2022-05-20 00:01:00.000 | 2022-05-20 00:01:08.000 |             120.000000000 |
+ 2022-05-19 00:01:00.000 | 2022-05-19 00:01:08.000 |             243.000000000 |
+ 2022-05-18 00:01:00.000 | 2022-05-18 00:01:08.000 |              58.000000000 |
+ 2022-05-17 00:01:00.000 | 2022-05-17 00:01:08.000 |              59.000000000 |
+ 2022-05-16 00:01:00.000 | 2022-05-16 00:01:08.000 |             136.000000000 |
+ 2022-05-15 00:01:00.000 | 2022-05-15 00:01:08.000 |             234.000000000 |
+
+taos> select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart asc;
+         _wstart         |        last(ts)         |          avg(c2)          |
+================================================================================
+ 2022-05-15 00:01:00.000 | 2022-05-15 00:01:08.000 |             234.000000000 |
+ 2022-05-16 00:01:00.000 | 2022-05-16 00:01:08.000 |             136.000000000 |
+ 2022-05-17 00:01:00.000 | 2022-05-17 00:01:08.000 |              59.000000000 |
+ 2022-05-18 00:01:00.000 | 2022-05-18 00:01:08.000 |              58.000000000 |
+ 2022-05-19 00:01:00.000 | 2022-05-19 00:01:08.000 |             243.000000000 |
+ 2022-05-20 00:01:00.000 | 2022-05-20 00:01:08.000 |             120.000000000 |
+ 2022-05-21 00:01:00.000 | 2022-05-21 00:01:08.000 |              11.000000000 |
+ 2022-05-22 00:01:00.000 | 2022-05-22 00:01:08.000 |             196.000000000 |
+ 2022-05-23 00:01:00.000 | 2022-05-23 00:01:08.000 |             116.000000000 |
+ 2022-05-24 00:01:00.000 | 2022-05-24 00:01:08.000 |             210.000000000 |
+
+taos> select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart asc;
+         _wstart         |        first(ts)        |          avg(c2)          |
+================================================================================
+ 2022-05-15 00:01:00.000 | 2022-05-15 00:01:08.000 |             234.000000000 |
+ 2022-05-16 00:01:00.000 | 2022-05-16 00:01:08.000 |             136.000000000 |
+ 2022-05-17 00:01:00.000 | 2022-05-17 00:01:08.000 |              59.000000000 |
+ 2022-05-18 00:01:00.000 | 2022-05-18 00:01:08.000 |              58.000000000 |
+ 2022-05-19 00:01:00.000 | 2022-05-19 00:01:08.000 |             243.000000000 |
+ 2022-05-20 00:01:00.000 | 2022-05-20 00:01:08.000 |             120.000000000 |
+ 2022-05-21 00:01:00.000 | 2022-05-21 00:01:08.000 |              11.000000000 |
+ 2022-05-22 00:01:00.000 | 2022-05-22 00:01:08.000 |             196.000000000 |
+ 2022-05-23 00:01:00.000 | 2022-05-23 00:01:08.000 |             116.000000000 |
+ 2022-05-24 00:01:00.000 | 2022-05-24 00:01:08.000 |             210.000000000 |
+
+taos> select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart desc;
+         _wstart         |        first(ts)        |          avg(c2)          |
+================================================================================
+ 2022-05-24 00:01:00.000 | 2022-05-24 00:01:08.000 |             210.000000000 |
+ 2022-05-23 00:01:00.000 | 2022-05-23 00:01:08.000 |             116.000000000 |
+ 2022-05-22 00:01:00.000 | 2022-05-22 00:01:08.000 |             196.000000000 |
+ 2022-05-21 00:01:00.000 | 2022-05-21 00:01:08.000 |              11.000000000 |
+ 2022-05-20 00:01:00.000 | 2022-05-20 00:01:08.000 |             120.000000000 |
+ 2022-05-19 00:01:00.000 | 2022-05-19 00:01:08.000 |             243.000000000 |
+ 2022-05-18 00:01:00.000 | 2022-05-18 00:01:08.000 |              58.000000000 |
+ 2022-05-17 00:01:00.000 | 2022-05-17 00:01:08.000 |              59.000000000 |
+ 2022-05-16 00:01:00.000 | 2022-05-16 00:01:08.000 |             136.000000000 |
+ 2022-05-15 00:01:00.000 | 2022-05-15 00:01:08.000 |             234.000000000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d
+            d            |
+==========================
+ 2022-05-15 00:01:00.000 |
+ 2022-05-16 00:01:00.000 |
+ 2022-05-17 00:01:00.000 |
+ 2022-05-18 00:01:00.000 |
+ 2022-05-19 00:01:00.000 |
+ 2022-05-20 00:01:00.000 |
+ 2022-05-21 00:01:00.000 |
+ 2022-05-22 00:01:00.000 |
+ 2022-05-23 00:01:00.000 |
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d;
+            d            |
+==========================
+ 2022-05-15 00:01:00.000 |
+ 2022-05-16 00:01:00.000 |
+ 2022-05-17 00:01:00.000 |
+ 2022-05-18 00:01:00.000 |
+ 2022-05-19 00:01:00.000 |
+ 2022-05-20 00:01:00.000 |
+ 2022-05-21 00:01:00.000 |
+ 2022-05-22 00:01:00.000 |
+ 2022-05-23 00:01:00.000 |
+ 2022-05-24 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+ 2022-05-23 00:01:00.000 |
+ 2022-05-22 00:01:00.000 |
+ 2022-05-21 00:01:00.000 |
+ 2022-05-20 00:01:00.000 |
+ 2022-05-19 00:01:00.000 |
+ 2022-05-18 00:01:00.000 |
+ 2022-05-17 00:01:00.000 |
+ 2022-05-16 00:01:00.000 |
+ 2022-05-15 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:00.000 |
+ 2022-05-23 00:01:00.000 |
+ 2022-05-22 00:01:00.000 |
+ 2022-05-21 00:01:00.000 |
+ 2022-05-20 00:01:00.000 |
+ 2022-05-19 00:01:00.000 |
+ 2022-05-18 00:01:00.000 |
+ 2022-05-17 00:01:00.000 |
+ 2022-05-16 00:01:00.000 |
+ 2022-05-15 00:01:00.000 |
+
+taos> select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-19 00:01:08.000' interval(10s) order by d;
+            d            |
+==========================
+ 2022-05-15 00:01:00.000 |
+ 2022-05-16 00:01:00.000 |
+ 2022-05-17 00:01:00.000 |
+ 2022-05-18 00:01:00.000 |
+ 2022-05-19 00:01:00.000 |
+
+taos> select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > '2022-05-15 00:01:00.000' and b < '2022-05-19 00:01:08.000' interval(10s) order by d;
+            d            |
+==========================
+ 2022-05-15 00:01:08.000 |
+ 2022-05-16 00:01:08.000 |
+ 2022-05-17 00:01:08.000 |
+ 2022-05-18 00:01:08.000 |
+ 2022-05-24 00:01:08.000 |
+
+taos> select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > '2022-05-15 00:01:00.000' and b < '2022-05-19 00:01:08.000' interval(10s) order by d desc;
+            d            |
+==========================
+ 2022-05-24 00:01:08.000 |
+ 2022-05-18 00:01:08.000 |
+ 2022-05-17 00:01:08.000 |
+ 2022-05-16 00:01:08.000 |
+ 2022-05-15 00:01:08.000 |
+
+taos> select _wstart, first(a) as d, avg(c) from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-21 00:01:08.000' interval(5h) fill(linear) order by d desc;
+         _wstart         |            d            |          avg(c)           |
+================================================================================
+ 2022-05-20 20:00:00.000 | 2022-05-21 00:01:00.000 |              11.000000000 |
+ 2022-05-20 15:00:00.000 | 2022-05-20 18:01:00.000 |              38.250000000 |
+ 2022-05-20 10:00:00.000 | 2022-05-20 12:01:00.000 |              65.500000000 |
+ 2022-05-20 05:00:00.000 | 2022-05-20 06:01:00.000 |              92.750000000 |
+ 2022-05-20 00:00:00.000 | 2022-05-20 00:01:00.000 |             120.000000000 |
+ 2022-05-19 19:00:00.000 | 2022-05-19 19:13:00.000 |             144.600000000 |
+ 2022-05-19 14:00:00.000 | 2022-05-19 14:25:00.000 |             169.200000000 |
+ 2022-05-19 09:00:00.000 | 2022-05-19 09:37:00.000 |             193.800000000 |
+ 2022-05-19 04:00:00.000 | 2022-05-19 04:49:00.000 |             218.400000000 |
+ 2022-05-18 23:00:00.000 | 2022-05-19 00:01:00.000 |             243.000000000 |
+ 2022-05-18 18:00:00.000 | 2022-05-18 19:13:00.000 |             206.000000000 |
+ 2022-05-18 13:00:00.000 | 2022-05-18 14:25:00.000 |             169.000000000 |
+ 2022-05-18 08:00:00.000 | 2022-05-18 09:37:00.000 |             132.000000000 |
+ 2022-05-18 03:00:00.000 | 2022-05-18 04:49:00.000 |              95.000000000 |
+ 2022-05-17 22:00:00.000 | 2022-05-18 00:01:00.000 |              58.000000000 |
+ 2022-05-17 17:00:00.000 | 2022-05-17 19:13:00.000 |              58.200000000 |
+ 2022-05-17 12:00:00.000 | 2022-05-17 14:25:00.000 |              58.400000000 |
+ 2022-05-17 07:00:00.000 | 2022-05-17 09:37:00.000 |              58.600000000 |
+ 2022-05-17 02:00:00.000 | 2022-05-17 04:49:00.000 |              58.800000000 |
+ 2022-05-16 21:00:00.000 | 2022-05-17 00:01:00.000 |              59.000000000 |
+ 2022-05-16 16:00:00.000 | 2022-05-16 19:13:00.000 |              74.400000000 |
+ 2022-05-16 11:00:00.000 | 2022-05-16 14:25:00.000 |              89.800000000 |
+ 2022-05-16 06:00:00.000 | 2022-05-16 09:37:00.000 |             105.200000000 |
+ 2022-05-16 01:00:00.000 | 2022-05-16 04:49:00.000 |             120.600000000 |
+ 2022-05-15 20:00:00.000 | 2022-05-16 00:01:00.000 |             136.000000000 |
+ 2022-05-15 15:00:00.000 | 2022-05-15 18:01:00.000 |             160.500000000 |
+ 2022-05-15 10:00:00.000 | 2022-05-15 12:01:00.000 |             185.000000000 |
+ 2022-05-15 05:00:00.000 | 2022-05-15 06:01:00.000 |             209.500000000 |
+ 2022-05-15 00:00:00.000 | 2022-05-15 00:01:00.000 |             234.000000000 |
+
+taos> explain verbose true select _wstart, first(a) as d, avg(c) from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-21 00:01:08.000' interval(5h) fill(linear) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=24
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Fill (mode=linear width=32 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=4 width=32
+*************************** 5.row ***************************
+QUERY_PLAN:          Time Range: [1652544060001, 1653062467999]
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Interval on Column a (functions=4 width=32 input_order=desc output_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=4 width=32
+*************************** 8.row ***************************
+QUERY_PLAN:             Time Window: interval=5h offset=0a sliding=5h
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Projection (columns=3 width=24 input_order=desc )
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: true
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=desc output_order=desc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 17.row ***************************
+QUERY_PLAN:                   Filter: ((a > 1652544060000) AND (a < 1653062468000))
+*************************** 18.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 19.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=desc output_order=desc)
+*************************** 20.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 21.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 22.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  desc
+*************************** 23.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 24.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 25.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 26.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 27.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 28.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 29.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 30.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 31.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 32.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 33.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 34.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=desc )
+*************************** 35.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 36.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 37.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 38.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 39.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 40.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select _wstart, first(a) as d, avg(c) from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a asc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-21 00:01:08.000' interval(5h) fill(linear) order by d desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=asc output_order=unknown  (columns=3 width=24)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=24
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Fill (mode=linear width=32 input_order=asc )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=4 width=32
+*************************** 5.row ***************************
+QUERY_PLAN:          Time Range: [1652544060001, 1653062467999]
+*************************** 6.row ***************************
+QUERY_PLAN:       -> Interval on Column a (functions=4 width=32 input_order=asc output_order=asc )
+*************************** 7.row ***************************
+QUERY_PLAN:             Output: columns=4 width=32
+*************************** 8.row ***************************
+QUERY_PLAN:             Time Window: interval=5h offset=0a sliding=5h
+*************************** 9.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 10.row ***************************
+QUERY_PLAN:          -> Projection (columns=3 width=24 input_order=asc )
+*************************** 11.row ***************************
+QUERY_PLAN:                Output: columns=3 width=24
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: true
+*************************** 13.row ***************************
+QUERY_PLAN:                Merge ResBlocks: False
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Merge Aligned Interval on Column  (functions=3 width=24 input_order=asc output_order=asc)
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=3 width=24
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Window: interval=10s offset=0a sliding=10s
+*************************** 17.row ***************************
+QUERY_PLAN:                   Filter: ((a > 1652544060000) AND (a < 1653062468000))
+*************************** 18.row ***************************
+QUERY_PLAN:                   Merge ResBlocks: True
+*************************** 19.row ***************************
+QUERY_PLAN:                -> SortMerge (columns=3 width=108 input_order=asc output_order=asc)
+*************************** 20.row ***************************
+QUERY_PLAN:                      Output: columns=3 width=108
+*************************** 21.row ***************************
+QUERY_PLAN:                      Output: Ignore Group Id: false
+*************************** 22.row ***************************
+QUERY_PLAN:                      Merge Key: _group_id asc,  asc
+*************************** 23.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 24.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 25.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 26.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 27.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 28.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 29.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 30.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 31.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 32.row ***************************
+QUERY_PLAN:                   -> Data Exchange 1:1 (width=108)
+*************************** 33.row ***************************
+QUERY_PLAN:                         Output: columns=3 width=108
+*************************** 34.row ***************************
+QUERY_PLAN:                      -> Interval on Column ts (functions=3 width=108 input_order=desc output_order=asc )
+*************************** 35.row ***************************
+QUERY_PLAN:                            Output: columns=3 width=108
+*************************** 36.row ***************************
+QUERY_PLAN:                            Time Window: interval=10s offset=0a sliding=10s
+*************************** 37.row ***************************
+QUERY_PLAN:                            Merge ResBlocks: False
+*************************** 38.row ***************************
+QUERY_PLAN:                         -> Table Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 39.row ***************************
+QUERY_PLAN:                               Output: columns=2 width=12
+*************************** 40.row ***************************
+QUERY_PLAN:                               Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select * from (select ts as a, c2 as b from meters order by c2 desc)\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=2 width=12
+*************************** 3.row ***************************
+QUERY_PLAN:       Output: Ignore Group Id: false
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge Key: b desc
+*************************** 5.row ***************************
+QUERY_PLAN:    -> Data Exchange 1:1 (width=12)
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=2 width=12
+*************************** 7.row ***************************
+QUERY_PLAN:       -> Sort input_order=unknown output_order=unknown  (columns=2 width=12)
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 9.row ***************************
+QUERY_PLAN:          -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 10.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 11.row ***************************
+QUERY_PLAN:                Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 12.row ***************************
+QUERY_PLAN:    -> Data Exchange 1:1 (width=12)
+*************************** 13.row ***************************
+QUERY_PLAN:          Output: columns=2 width=12
+*************************** 14.row ***************************
+QUERY_PLAN:       -> Sort input_order=unknown output_order=unknown  (columns=2 width=12)
+*************************** 15.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 16.row ***************************
+QUERY_PLAN:          -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 17.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 18.row ***************************
+QUERY_PLAN:                Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> select * from (select ts as a, c2 as b from meters order by c2 desc);
+            a            |      b      |
+========================================
+ 2022-05-19 00:01:08.000 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |
+ 2022-05-15 00:01:08.000 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |
+ 2022-05-24 00:01:08.000 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |
+ 2022-05-22 00:01:08.000 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |
+ 2022-05-16 00:01:08.000 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |
+ 2022-05-20 00:01:08.000 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |
+ 2022-05-23 00:01:08.000 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |
+ 2022-05-17 00:01:08.000 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |
+ 2022-05-18 00:01:08.000 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |
+ 2022-05-21 00:01:08.000 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |
+
+taos> explain verbose true select * from (select ts as a, c2 as b from meters order by c2 desc) order by a desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Sort input_order=unknown output_order=desc  (columns=2 width=12)
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=2 width=12
+*************************** 3.row ***************************
+QUERY_PLAN:    -> Projection (columns=2 width=12 input_order=unknown )
+*************************** 4.row ***************************
+QUERY_PLAN:          Output: columns=2 width=12
+*************************** 5.row ***************************
+QUERY_PLAN:          Output: Ignore Group Id: true
+*************************** 6.row ***************************
+QUERY_PLAN:          Merge ResBlocks: True
+*************************** 7.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
+*************************** 8.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 9.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 10.row ***************************
+QUERY_PLAN:             Merge Key: b desc
+*************************** 11.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 12.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 13.row ***************************
+QUERY_PLAN:             -> Sort input_order=unknown output_order=unknown  (columns=2 width=12)
+*************************** 14.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 15.row ***************************
+QUERY_PLAN:                -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 16.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=12
+*************************** 17.row ***************************
+QUERY_PLAN:                      Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 18.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 19.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 20.row ***************************
+QUERY_PLAN:             -> Sort input_order=unknown output_order=unknown  (columns=2 width=12)
+*************************** 21.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 22.row ***************************
+QUERY_PLAN:                -> Table Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 23.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=12
+*************************** 24.row ***************************
+QUERY_PLAN:                      Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> select * from (select ts as a, c2 as b from meters order by c2 desc) order by a desc;
+            a            |      b      |
+========================================
+ 2022-05-24 00:01:08.000 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |
+ 2022-05-23 00:01:08.000 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |
+ 2022-05-22 00:01:08.000 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |
+ 2022-05-21 00:01:08.000 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |
+ 2022-05-20 00:01:08.000 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |
+ 2022-05-19 00:01:08.000 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |
+ 2022-05-18 00:01:08.000 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |
+ 2022-05-17 00:01:08.000 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |
+ 2022-05-16 00:01:08.000 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |
+ 2022-05-15 00:01:08.000 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |
+
+taos> explain verbose true select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Projection (columns=3 width=16 input_order=unknown )
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=16
+*************************** 3.row ***************************
+QUERY_PLAN:       Output: Ignore Group Id: true
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> Inner join (columns=4 width=24 input_order=asc )
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=4 width=24
+*************************** 7.row ***************************
+QUERY_PLAN:          Join Cond: (`test`.`a`.`ts` = `test`.`b`.`ts`)
+*************************** 8.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
+*************************** 9.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 11.row ***************************
+QUERY_PLAN:             Merge Key: ts asc
+*************************** 12.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 13.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 17.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 18.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 19.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 20.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 21.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 22.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
+*************************** 23.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 24.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 25.row ***************************
+QUERY_PLAN:             Merge Key: ts asc
+*************************** 26.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 27.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 29.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 30.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 31.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 32.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 33.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 34.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts order by a.ts\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Projection (columns=3 width=16 input_order=unknown )
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=16
+*************************** 3.row ***************************
+QUERY_PLAN:       Output: Ignore Group Id: true
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> Inner join (columns=4 width=24 input_order=asc )
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=4 width=24
+*************************** 7.row ***************************
+QUERY_PLAN:          Join Cond: (`test`.`a`.`ts` = `test`.`b`.`ts`)
+*************************** 8.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=asc output_order=asc)
+*************************** 9.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 11.row ***************************
+QUERY_PLAN:             Merge Key: ts asc
+*************************** 12.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 13.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 17.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 18.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 19.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 20.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 21.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 22.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=asc output_order=asc)
+*************************** 23.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 24.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 25.row ***************************
+QUERY_PLAN:             Merge Key: ts asc
+*************************** 26.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 27.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 29.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 30.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 31.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 32.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 33.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 34.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 35.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts;
+           ts            |     c2      |     c2      |
+======================================================
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+
+taos> select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts order by a.ts desc;
+           ts            |     c2      |     c2      |
+======================================================
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+
+taos> explain verbose true select a.ts, a.c2, b.c2 from meters as a join (select ts, c2 from meters order by ts desc) b on a.ts = b.ts order by a.ts desc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Projection (columns=3 width=16 input_order=unknown )
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=16
+*************************** 3.row ***************************
+QUERY_PLAN:       Output: Ignore Group Id: true
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> Inner join (columns=4 width=24 input_order=desc )
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=4 width=24
+*************************** 7.row ***************************
+QUERY_PLAN:          Join Cond: (`test`.`a`.`ts` = `b`.`ts`)
+*************************** 8.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=desc output_order=desc)
+*************************** 9.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 11.row ***************************
+QUERY_PLAN:             Merge Key: _group_id asc, ts desc
+*************************** 12.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 13.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 17.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 18.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 19.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 20.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 21.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 22.row ***************************
+QUERY_PLAN:       -> Projection (columns=2 width=12 input_order=desc )
+*************************** 23.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 24.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 25.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:          -> SortMerge (columns=2 width=12 input_order=desc output_order=desc)
+*************************** 27.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: false
+*************************** 29.row ***************************
+QUERY_PLAN:                Merge Key: _group_id asc, ts desc
+*************************** 30.row ***************************
+QUERY_PLAN:             -> Data Exchange 1:1 (width=12)
+*************************** 31.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 32.row ***************************
+QUERY_PLAN:                -> Table Merge Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 33.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=12
+*************************** 34.row ***************************
+QUERY_PLAN:                      Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 35.row ***************************
+QUERY_PLAN:             -> Data Exchange 1:1 (width=12)
+*************************** 36.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                -> Table Merge Scan on meters (columns=2 width=12 order=[asc|0 desc|1])
+*************************** 38.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=12
+*************************** 39.row ***************************
+QUERY_PLAN:                      Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> explain verbose true select a.ts, a.c2, b.c2 from meters as a join (select ts, c2 from meters order by ts desc) b on a.ts = b.ts order by a.ts asc\G;
+*************************** 1.row ***************************
+QUERY_PLAN: -> Projection (columns=3 width=16 input_order=unknown )
+*************************** 2.row ***************************
+QUERY_PLAN:       Output: columns=3 width=16
+*************************** 3.row ***************************
+QUERY_PLAN:       Output: Ignore Group Id: true
+*************************** 4.row ***************************
+QUERY_PLAN:       Merge ResBlocks: True
+*************************** 5.row ***************************
+QUERY_PLAN:    -> Inner join (columns=4 width=24 input_order=asc )
+*************************** 6.row ***************************
+QUERY_PLAN:          Output: columns=4 width=24
+*************************** 7.row ***************************
+QUERY_PLAN:          Join Cond: (`test`.`a`.`ts` = `b`.`ts`)
+*************************** 8.row ***************************
+QUERY_PLAN:       -> SortMerge (columns=2 width=12 input_order=asc output_order=asc)
+*************************** 9.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 10.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: false
+*************************** 11.row ***************************
+QUERY_PLAN:             Merge Key: _group_id asc, ts asc
+*************************** 12.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 13.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 14.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 15.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 16.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 17.row ***************************
+QUERY_PLAN:          -> Data Exchange 1:1 (width=12)
+*************************** 18.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 19.row ***************************
+QUERY_PLAN:             -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 20.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 21.row ***************************
+QUERY_PLAN:                   Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 22.row ***************************
+QUERY_PLAN:       -> Projection (columns=2 width=12 input_order=asc )
+*************************** 23.row ***************************
+QUERY_PLAN:             Output: columns=2 width=12
+*************************** 24.row ***************************
+QUERY_PLAN:             Output: Ignore Group Id: true
+*************************** 25.row ***************************
+QUERY_PLAN:             Merge ResBlocks: False
+*************************** 26.row ***************************
+QUERY_PLAN:          -> SortMerge (columns=2 width=12 input_order=asc output_order=asc)
+*************************** 27.row ***************************
+QUERY_PLAN:                Output: columns=2 width=12
+*************************** 28.row ***************************
+QUERY_PLAN:                Output: Ignore Group Id: false
+*************************** 29.row ***************************
+QUERY_PLAN:                Merge Key: _group_id asc, ts asc
+*************************** 30.row ***************************
+QUERY_PLAN:             -> Data Exchange 1:1 (width=12)
+*************************** 31.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 32.row ***************************
+QUERY_PLAN:                -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 33.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=12
+*************************** 34.row ***************************
+QUERY_PLAN:                      Time Range: [-9223372036854775808, 9223372036854775807]
+*************************** 35.row ***************************
+QUERY_PLAN:             -> Data Exchange 1:1 (width=12)
+*************************** 36.row ***************************
+QUERY_PLAN:                   Output: columns=2 width=12
+*************************** 37.row ***************************
+QUERY_PLAN:                -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
+*************************** 38.row ***************************
+QUERY_PLAN:                      Output: columns=2 width=12
+*************************** 39.row ***************************
+QUERY_PLAN:                      Time Range: [-9223372036854775808, 9223372036854775807]
+
+taos> select a.ts, a.c2, b.c2 from meters as a join (select * from meters order by ts desc) b on a.ts = b.ts order by a.ts asc;
+           ts            |     c2      |     c2      |
+======================================================
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-15 00:01:08.000 |         234 |         234 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-16 00:01:08.000 |         136 |         136 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-17 00:01:08.000 |          59 |          59 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-18 00:01:08.000 |          58 |          58 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-19 00:01:08.000 |         243 |         243 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-20 00:01:08.000 |         120 |         120 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-21 00:01:08.000 |          11 |          11 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-22 00:01:08.000 |         196 |         196 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-23 00:01:08.000 |         116 |         116 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+ 2022-05-24 00:01:08.000 |         210 |         210 |
+

tests/script/tsim/query/t/explain_tsorder.sql

+use test;
+explain verbose true select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart desc\G;
+explain verbose true select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart asc\G;
+explain verbose true select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart asc\G;
+explain verbose true select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart desc\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d desc\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d desc\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d desc\G;
+
+
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d desc\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d desc\G;
+
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d desc\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d desc\G;
+
+
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) where a > 10000 and a < 20000 interval(10s) fill(NULL) order by d\G;
+explain verbose true select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > 10000 and a < 20000 interval(10s) fill(NULL) order by d\G;
+explain verbose true select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > 10000 and b < 20000 interval(10s) fill(NULL) order by d\G;
+explain verbose true select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > 10000 and b < 20000 interval(10s) fill(NULL) order by d desc\G;
+
+
+select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart desc;
+select _wstart, last(ts), avg(c2) from meters interval(10s) order by _wstart asc;
+select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart asc;
+select _wstart, first(ts), avg(c2) from meters interval(10s) order by _wstart desc;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s)) order by d desc;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a) order by d desc;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) order by d desc;
+
+
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) order by d desc;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) order by d desc;
+
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b) group by c order by d desc;
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) group by c order by d desc;
+
+select last(a) as d from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-19 00:01:08.000' interval(10s) order by d;
+select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > '2022-05-15 00:01:00.000' and b < '2022-05-19 00:01:08.000' interval(10s) order by d;
+select last(b) as d from (select last(ts) as b, avg(c2) as c from meters interval(10s) order by b desc) where b > '2022-05-15 00:01:00.000' and b < '2022-05-19 00:01:08.000' interval(10s) order by d desc;
+select _wstart, first(a) as d, avg(c) from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-21 00:01:08.000' interval(5h) fill(linear) order by d desc;
+
+explain verbose true select _wstart, first(a) as d, avg(c) from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a desc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-21 00:01:08.000' interval(5h) fill(linear) order by d desc\G;
+explain verbose true select _wstart, first(a) as d, avg(c) from (select _wstart as a, last(ts) as b, avg(c2) as c from meters interval(10s) order by a asc) where a > '2022-05-15 00:01:00.000' and a < '2022-05-21 00:01:08.000' interval(5h) fill(linear) order by d desc\G;
+
+explain verbose true select * from (select ts as a, c2 as b from meters order by c2 desc)\G;
+select * from (select ts as a, c2 as b from meters order by c2 desc);
+
+explain verbose true select * from (select ts as a, c2 as b from meters order by c2 desc) order by a desc\G;
+select * from (select ts as a, c2 as b from meters order by c2 desc) order by a desc;
+
+explain verbose true select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts\G;
+explain verbose true select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts order by a.ts\G;
+select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts;
+select a.ts, a.c2, b.c2 from meters as a join meters as b on a.ts = b.ts order by a.ts desc;
+explain verbose true select a.ts, a.c2, b.c2 from meters as a join (select ts, c2 from meters order by ts desc) b on a.ts = b.ts order by a.ts desc\G;
+explain verbose true select a.ts, a.c2, b.c2 from meters as a join (select ts, c2 from meters order by ts desc) b on a.ts = b.ts order by a.ts asc\G;
+select a.ts, a.c2, b.c2 from meters as a join (select * from meters order by ts desc) b on a.ts = b.ts order by a.ts asc;

utils/tsim/src/simExe.c

@@ -434,7 +434,7 @@ bool simExecuteSystemCmd(SScript *script, char *option) {
   simLogSql(buf, true);
   int32_t code = system(buf);
   int32_t repeatTimes = 0;
-  while (code < 0) {
+  while (code != 0) {
     simError("script:%s, failed to execute %s , code %d, errno:%d %s, repeatTimes:%d", script->fileName, buf, code,
              errno, strerror(errno), repeatTimes);
     taosMsleep(1000);