Merge pull request #13655 from taosdata/feature/TD-16390

feat(stream): stream state window support top and bottom

include/libs/function/function.h

@@ -146,6 +146,7 @@ typedef struct SqlFunctionCtx {
   struct SDiskbasedBuf  *pBuf;
   struct SSDataBlock    *pSrcBlock;
   int32_t                curBufPage;
+  bool                   increase;
 
   char                   udfName[TSDB_FUNC_NAME_LEN];
 } SqlFunctionCtx;

source/libs/executor/inc/executorimpl.h

@@ -804,7 +804,7 @@ SOperatorInfo* createSortedMergeOperatorInfo(SOperatorInfo** downstream, int32_t
 
 SOperatorInfo* createIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                           SSDataBlock* pResBlock, SInterval* pInterval, int32_t primaryTsSlotId,
-                                          STimeWindowAggSupp *pTwAggSupp, SExecTaskInfo* pTaskInfo);
+                                          STimeWindowAggSupp *pTwAggSupp, SExecTaskInfo* pTaskInfo, bool isStream);
 SOperatorInfo* createStreamFinalIntervalOperatorInfo(SOperatorInfo* downstream,
     SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, int32_t numOfChild);
 SOperatorInfo* createStreamIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
@@ -892,8 +892,8 @@ STimeWindow getActiveTimeWindow(SDiskbasedBuf* pBuf, SResultRowInfo* pResultRowI
 int32_t getNumOfRowsInTimeWindow(SDataBlockInfo* pDataBlockInfo, TSKEY* pPrimaryColumn, int32_t startPos, TSKEY ekey,
     __block_search_fn_t searchFn, STableQueryInfo* item, int32_t order);
 int32_t binarySearchForKey(char* pValue, int num, TSKEY key, int order);
-int32_t initSessionAggSupporter(SStreamAggSupporter* pSup, const char* pKey);
-int32_t initStateAggSupporter(SStreamAggSupporter* pSup, const char* pKey);
+int32_t initStreamAggSupporter(SStreamAggSupporter* pSup, const char* pKey,
+    SqlFunctionCtx* pCtx, int32_t numOfOutput, size_t size);
 SResultRow* getNewResultRow(SDiskbasedBuf* pResultBuf, int64_t tableGroupId, int32_t interBufSize);
 SResultWindowInfo* getSessionTimeWindow(SArray* pWinInfos, TSKEY ts, int64_t gap, int32_t* pIndex);
 int32_t updateSessionWindowInfo(SResultWindowInfo* pWinInfo, TSKEY* pTs, int32_t rows,

source/libs/executor/src/executorimpl.c

@@ -1130,6 +1130,7 @@ SqlFunctionCtx* createSqlFunctionCtx(SExprInfo* pExprInfo, int32_t numOfOutput,
     pCtx->start.key = INT64_MIN;
     pCtx->end.key = INT64_MIN;
     pCtx->numOfParams = pExpr->base.numOfParams;
+    pCtx->increase = false;
 
     pCtx->param = pFunct->pParam;
     //    for (int32_t j = 0; j < pCtx->numOfParams; ++j) {
@@ -2008,8 +2009,16 @@ int32_t doCopyToSDataBlock(SExecTaskInfo* pTaskInfo, SSDataBlock* pBlock, SExprI
         // the _wstartts needs to copy to 20 following rows, since the results of top-k expands to 20 different rows.
         SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, slotId);
         char*            in = GET_ROWCELL_INTERBUF(pCtx[j].resultInfo);
-        for (int32_t k = 0; k < pRow->numOfRows; ++k) {
-          colDataAppend(pColInfoData, pBlock->info.rows + k, in, pCtx[j].resultInfo->isNullRes);
+        if (pCtx[j].increase) {
+          int64_t ts = *(int64_t*) in;
+          for (int32_t k = 0; k < pRow->numOfRows; ++k) {
+            colDataAppend(pColInfoData, pBlock->info.rows + k, (const char *)&ts, pCtx[j].resultInfo->isNullRes);
+            ts++;
+          }
+        } else {
+          for (int32_t k = 0; k < pRow->numOfRows; ++k) {
+            colDataAppend(pColInfoData, pBlock->info.rows + k, in, pCtx[j].resultInfo->isNullRes);
+          }
         }
       }
     }
@@ -4676,7 +4685,8 @@ SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo
     }
 
     int32_t tsSlotId = ((SColumnNode*)pIntervalPhyNode->window.pTspk)->slotId;
-    pOptr = createIntervalOperatorInfo(ops[0], pExprInfo, num, pResBlock, &interval, tsSlotId, &as, pTaskInfo);
+    bool isStream = (QUERY_NODE_PHYSICAL_PLAN_STREAM_INTERVAL == type);
+    pOptr = createIntervalOperatorInfo(ops[0], pExprInfo, num, pResBlock, &interval, tsSlotId, &as, pTaskInfo, isStream);
 
   } else if (QUERY_NODE_PHYSICAL_PLAN_STREAM_SEMI_INTERVAL == type) {
     int32_t children = 8;
@@ -5339,7 +5349,8 @@ int32_t getOperatorExplainExecInfo(SOperatorInfo* operatorInfo, SExplainExecInfo
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t initStreamAggSupporter(SStreamAggSupporter* pSup, const char* pKey, size_t size) {
+int32_t initStreamAggSupporter(SStreamAggSupporter* pSup, const char* pKey, SqlFunctionCtx* pCtx, int32_t numOfOutput, size_t size) {
+  pSup->resultRowSize = getResultRowSize(pCtx, numOfOutput);
   pSup->keySize = sizeof(int64_t) + sizeof(TSKEY);
   pSup->pKeyBuf = taosMemoryCalloc(1, pSup->keySize);
   pSup->pResultRows = taosArrayInit(1024, size);
@@ -5358,15 +5369,11 @@ int32_t initStreamAggSupporter(SStreamAggSupporter* pSup, const char* pKey, size
   if (bufSize <= pageSize) {
     bufSize = pageSize * 4;
   }
-  return createDiskbasedBuf(&pSup->pResultBuf, pageSize, bufSize, pKey, TD_TMP_DIR_PATH);
-}
-
-int32_t initSessionAggSupporter(SStreamAggSupporter* pSup, const char* pKey) {
-  return initStreamAggSupporter(pSup, pKey, sizeof(SResultWindowInfo));
-}
-
-int32_t initStateAggSupporter(SStreamAggSupporter* pSup, const char* pKey) {
-  return initStreamAggSupporter(pSup, pKey, sizeof(SStateWindowInfo));
+  int32_t code = createDiskbasedBuf(&pSup->pResultBuf, pageSize, bufSize, pKey, TD_TMP_DIR_PATH);
+  for(int32_t i = 0; i < numOfOutput; ++i) {
+    pCtx[i].pBuf = pSup->pResultBuf;
+  }
+  return code;
 }
 
 int64_t getSmaWaterMark(int64_t interval, double filesFactor) {

source/libs/executor/src/timewindowoperator.c

@@ -1438,9 +1438,15 @@ static bool timeWindowinterpNeeded(SqlFunctionCtx* pCtx, int32_t numOfCols, SInt
   return needed;
 }
 
+void increaseTs(SqlFunctionCtx* pCtx) {
+  if (pCtx[0].pExpr->pExpr->_function.pFunctNode->funcType == FUNCTION_TYPE_WSTARTTS) {
+    pCtx[0].increase = true;
+  }
+}
+
 SOperatorInfo* createIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                           SSDataBlock* pResBlock, SInterval* pInterval, int32_t primaryTsSlotId,
-                                          STimeWindowAggSupp* pTwAggSupp, SExecTaskInfo* pTaskInfo) {
+                                          STimeWindowAggSupp* pTwAggSupp, SExecTaskInfo* pTaskInfo, bool isStream) {
   SIntervalAggOperatorInfo* pInfo = taosMemoryCalloc(1, sizeof(SIntervalAggOperatorInfo));
   SOperatorInfo*            pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
   if (pInfo == NULL || pOperator == NULL) {
@@ -1460,6 +1466,11 @@ SOperatorInfo* createIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo*
 
   int32_t code =
       initAggInfo(&pInfo->binfo, &pInfo->aggSup, pExprInfo, numOfCols, pResBlock, keyBufSize, pTaskInfo->id.str);
+  
+  if (isStream) {
+    ASSERT(numOfCols > 0);
+    increaseTs(pInfo->binfo.pCtx);
+  }
 
   initExecTimeWindowInfo(&pInfo->twAggSup.timeWindowData, &pInfo->win);
 
@@ -2128,6 +2139,8 @@ SOperatorInfo* createStreamFinalIntervalOperatorInfo(SOperatorInfo* downstream,
   SSDataBlock* pResBlock = createResDataBlock(pPhyNode->pOutputDataBlockDesc);
   int32_t code = initAggInfo(&pInfo->binfo, &pInfo->aggSup, pExprInfo, numOfCols,
       pResBlock, keyBufSize, pTaskInfo->id.str);
+  ASSERT(numOfCols > 0);
+  increaseTs(pInfo->binfo.pCtx);
   initExecTimeWindowInfo(&pInfo->twAggSup.timeWindowData, &pTaskInfo->window);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
@@ -2212,6 +2225,8 @@ int32_t initBiasicInfo(SOptrBasicInfo* pBasicInfo, SExprInfo* pExprInfo,
   for (int32_t i = 0; i < numOfCols; ++i) {
     pBasicInfo->pCtx[i].pBuf = NULL;
   }
+  ASSERT(numOfCols > 0);
+  increaseTs(pBasicInfo->pCtx);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -2228,6 +2243,10 @@ void initDownStream(SOperatorInfo* downstream, SStreamAggSupporter* pAggSup, int
   pScanInfo->pUpdateInfo = updateInfoInit(60000, TSDB_TIME_PRECISION_MILLI, waterMark);
 }
 
+int32_t initSessionAggSupporter(SStreamAggSupporter* pSup, const char* pKey, SqlFunctionCtx* pCtx, int32_t numOfOutput) {
+  return initStreamAggSupporter(pSup, pKey, pCtx, numOfOutput, sizeof(SResultWindowInfo));
+}
+
 SOperatorInfo* createStreamSessionAggOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                                   SSDataBlock* pResBlock, int64_t gap, int32_t tsSlotId,
                                                   STimeWindowAggSupp* pTwAggSupp, SExecTaskInfo* pTaskInfo) {
@@ -2244,8 +2263,8 @@ SOperatorInfo* createStreamSessionAggOperatorInfo(SOperatorInfo* downstream, SEx
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }
-  pInfo->streamAggSup.resultRowSize = getResultRowSize(pInfo->binfo.pCtx, numOfCols);
-  code = initSessionAggSupporter(&pInfo->streamAggSup, "StreamSessionAggOperatorInfo");
+  
+  code = initSessionAggSupporter(&pInfo->streamAggSup, "StreamSessionAggOperatorInfo", pInfo->binfo.pCtx, numOfCols);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }
@@ -3097,6 +3116,10 @@ static SSDataBlock* doStreamStateAgg(SOperatorInfo* pOperator) {
   return pBInfo->pRes->info.rows == 0 ? NULL : pBInfo->pRes;
 }
 
+int32_t initStateAggSupporter(SStreamAggSupporter* pSup, const char* pKey, SqlFunctionCtx* pCtx, int32_t numOfOutput) {
+  return initStreamAggSupporter(pSup, pKey, pCtx, numOfOutput, sizeof(SStateWindowInfo));
+}
+
 SOperatorInfo* createStreamStateAggOperatorInfo(SOperatorInfo* downstream, SPhysiNode* pPhyNode,
                                                 SExecTaskInfo* pTaskInfo) {
   SStreamStateWinodwPhysiNode* pStateNode = (SStreamStateWinodwPhysiNode*)pPhyNode;
@@ -3130,8 +3153,7 @@ SOperatorInfo* createStreamStateAggOperatorInfo(SOperatorInfo* downstream, SPhys
     goto _error;
   }
 
-  pInfo->streamAggSup.resultRowSize = getResultRowSize(pInfo->binfo.pCtx, numOfCols);
-  code = initStateAggSupporter(&pInfo->streamAggSup, "StreamStateAggOperatorInfo");
+  code = initStateAggSupporter(&pInfo->streamAggSup, "StreamStateAggOperatorInfo", pInfo->binfo.pCtx, numOfCols);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }

source/libs/function/inc/builtinsimpl.h

@@ -102,6 +102,8 @@ bool getTopBotFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv);
 int32_t topFunction(SqlFunctionCtx *pCtx);
 int32_t bottomFunction(SqlFunctionCtx *pCtx);
 int32_t topBotFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock);
+int32_t topCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
+int32_t bottomCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
 
 bool getSpreadFuncEnv(struct SFunctionNode* pFunc, SFuncExecEnv* pEnv);
 bool spreadFunctionSetup(SqlFunctionCtx *pCtx, SResultRowEntryInfo* pResultInfo);

source/libs/function/src/builtins.c

@@ -1364,6 +1364,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .initFunc     = functionSetup,
     .processFunc  = topFunction,
     .finalizeFunc = topBotFinalize,
+    .combineFunc  = topCombine,
   },
   {
     .name = "bottom",
@@ -1373,7 +1374,8 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .getEnvFunc   = getTopBotFuncEnv,
     .initFunc     = functionSetup,
     .processFunc  = bottomFunction,
-    .finalizeFunc = topBotFinalize
+    .finalizeFunc = topBotFinalize,
+    .combineFunc  = bottomCombine,
   },
   {
     .name = "spread",

source/libs/function/src/builtinsimpl.c

@@ -1389,6 +1389,18 @@ void setSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, const STuple
   }
 }
 
+void releaseSource(STuplePos* pPos) {
+  if (pPos->pageId == -1) {
+    return ;
+  }
+  // Todo(liuyao) relase row
+}
+
+void replaceTupleData(STuplePos* pDestPos, STuplePos* pSourcePos) {
+  releaseSource(pDestPos);
+  *pDestPos = *pSourcePos;
+}
+
 int32_t minMaxCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx, int32_t isMinFunc) {
   SResultRowEntryInfo* pDResInfo = GET_RES_INFO(pDestCtx);
   SMinmaxResInfo*      pDBuf = GET_ROWCELL_INTERBUF(pDResInfo);
@@ -1400,10 +1412,12 @@ int32_t minMaxCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx, int3
     if (pSBuf->assign && 
         ( (((*(double*)&pDBuf->v) < (*(double*)&pSBuf->v)) ^ isMinFunc) || !pDBuf->assign ) ) {
       *(double*) &pDBuf->v = *(double*) &pSBuf->v;
+      replaceTupleData(&pDBuf->tuplePos, &pSBuf->tuplePos);
     }
   } else {
     if ( pSBuf->assign && ( ((pDBuf->v < pSBuf->v) ^ isMinFunc) || !pDBuf->assign ) ) {
       pDBuf->v = pSBuf->v;
+      replaceTupleData(&pDBuf->tuplePos, &pSBuf->tuplePos);
     }
   }
   pDResInfo->numOfRes = TMAX(pDResInfo->numOfRes, pSResInfo->numOfRes);
@@ -2856,7 +2870,6 @@ void copyTupleData(SqlFunctionCtx* pCtx, int32_t rowIndex, const SSDataBlock* pS
 int32_t topBotFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   SResultRowEntryInfo* pEntryInfo = GET_RES_INFO(pCtx);
   STopBotRes*          pRes = GET_ROWCELL_INTERBUF(pEntryInfo);
-  pEntryInfo->complete = true;
 
   int32_t type = pCtx->input.pData[0]->info.type;
   int32_t slotId = pCtx->pExpr->base.resSchema.slotId;
@@ -2881,6 +2894,67 @@ int32_t topBotFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   return pEntryInfo->numOfRes;
 }
 
+void addResult(SqlFunctionCtx* pCtx, STopBotResItem* pSourceItem, int16_t type,
+    bool isTopQuery) {
+  SResultRowEntryInfo* pEntryInfo = GET_RES_INFO(pCtx);
+  STopBotRes* pRes = getTopBotOutputInfo(pCtx);
+  int32_t     maxSize = pCtx->param[1].param.i;
+  STopBotResItem* pItems = pRes->pItems;
+  assert(pItems != NULL);
+
+  // not full yet
+  if (pEntryInfo->numOfRes < maxSize) {
+    STopBotResItem* pItem = &pItems[pEntryInfo->numOfRes];
+    pItem->v = pSourceItem->v;
+    pItem->uid = pSourceItem->uid;
+    pItem->tuplePos.pageId = -1;
+    replaceTupleData(&pItem->tuplePos, &pSourceItem->tuplePos);
+    pEntryInfo->numOfRes++;
+    taosheapsort((void*)pItems, sizeof(STopBotResItem), pEntryInfo->numOfRes, (const void*)&type, topBotResComparFn,
+                 !isTopQuery);
+  } else {  // replace the minimum value in the result
+    if ((isTopQuery && (
+        (IS_SIGNED_NUMERIC_TYPE(type) && pSourceItem->v.i > pItems[0].v.i) ||
+        (IS_UNSIGNED_NUMERIC_TYPE(type) && pSourceItem->v.u > pItems[0].v.u) ||
+        (IS_FLOAT_TYPE(type) && pSourceItem->v.d > pItems[0].v.d)))
+        || (!isTopQuery && (
+        (IS_SIGNED_NUMERIC_TYPE(type) && pSourceItem->v.i < pItems[0].v.i) ||
+        (IS_UNSIGNED_NUMERIC_TYPE(type) && pSourceItem->v.u < pItems[0].v.u) ||
+        (IS_FLOAT_TYPE(type) && pSourceItem->v.d < pItems[0].v.d))
+        )) {
+      // replace the old data and the coresponding tuple data
+      STopBotResItem* pItem = &pItems[0];
+      pItem->v = pSourceItem->v;
+      pItem->uid = pSourceItem->uid;
+
+      // save the data of this tuple by over writing the old data
+      replaceTupleData(&pItem->tuplePos, &pSourceItem->tuplePos);
+      taosheapadjust((void*)pItems, sizeof(STopBotResItem), 0, pEntryInfo->numOfRes - 1, (const void*)&type,
+                     topBotResComparFn, NULL, !isTopQuery);
+    }
+  }
+}
+
+int32_t topCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx) {
+  int32_t type = pDestCtx->input.pData[0]->info.type;
+  SResultRowEntryInfo* pSResInfo = GET_RES_INFO(pSourceCtx);
+  STopBotRes*          pSBuf = getTopBotOutputInfo(pSourceCtx);
+  for (int32_t i = 0; i < pSResInfo->numOfRes; i++) {
+    addResult(pDestCtx, pSBuf->pItems + i, type, true);
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t bottomCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx) {
+  int32_t type = pDestCtx->input.pData[0]->info.type;
+  SResultRowEntryInfo* pSResInfo = GET_RES_INFO(pSourceCtx);
+  STopBotRes*          pSBuf = getTopBotOutputInfo(pSourceCtx);
+  for (int32_t i = 0; i < pSResInfo->numOfRes; i++) {
+    addResult(pDestCtx, pSBuf->pItems + i, type, false);
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 bool getSpreadFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv) {
   pEnv->calcMemSize = sizeof(SSpreadInfo);
   return true;

tests/script/tsim/stream/session0.sim

@@ -17,7 +17,7 @@ sql use test
 
 
 sql create table t1(ts timestamp, a int, b int , c int, d double,id int);
-sql create stream streams2 trigger at_once  into streamt as select  _wstartts, count(*) c1,  sum(a), max(a), min(d), stddev(a), last(a), first(d), max(id) s from t1 session(ts,10s);
+sql create stream streams1 trigger at_once  into streamt as select  _wstartts, count(*) c1,  sum(a), max(a), min(d), stddev(a), last(a), first(d), max(id) s from t1 session(ts,10s);
 sql insert into t1 values(1648791213000,NULL,NULL,NULL,NULL,1);
 sql insert into t1 values(1648791223001,10,2,3,1.1,2);
 sql insert into t1 values(1648791233002,3,2,3,2.1,3);
@@ -176,4 +176,107 @@ if $data08 != 13 then
   return -1
 endi
 
+sql create database test2 vgroups 1;
+sql use test2;
+sql create table t2(ts timestamp, a int, b int , c int, d double, id int);
+sql create stream streams2 trigger at_once  watermark 1d into streamt2 as select  _wstartts,apercentile(a,30) c1, apercentile(a,70), apercentile(a,20,"t-digest") c2, apercentile(a,60,"t-digest") c3, max(id) c4 from t2 session(ts,10s);
+sql insert into t2 values(1648791213001,1,1,3,1.0,1);
+sql insert into t2 values(1648791213002,2,2,6,3.4,2);
+sql insert into t2 values(1648791213003,4,9,3,4.8,3);
+sql insert into t2 values(1648791233003,3,4,3,2.1,4);
+sql insert into t2 values(1648791233004,3,5,3,3.4,5);
+sql insert into t2 values(1648791233005,3,6,3,7.6,6);
+
+#
+sql insert into t2 values(1648791223003,20,7,3,10.1,7);
+
+$loop_count = 0
+loop2:
+sleep 300
+sql select * from streamt2 where c4=7;
+
+$loop_count = $loop_count + 1
+if $loop_count == 10 then
+  return -1
+endi
+
+if $rows != 1 then
+  print ======$rows
+  goto loop2
+endi
+
+# row 0
+if $data01 != 2.091607978 then
+  print =====data01=$data01
+  goto loop2
+endi
+
+if $data02 != 3.274823935 then
+  print =====data02=$data02
+  goto loop2
+endi
+
+if $data03 != 1.800000000 then
+  print ======$data03
+  return -1
+endi
+
+if $data04 != 3.350000000 then
+  print ======$data04
+  return -1
+endi
+
+sql create database test3 vgroups 1;
+sql use test3;
+sql create table t1(ts timestamp, a int, b int , c int, d double);
+sql create stream streams3 trigger at_once  watermark 1d into streamt3 as select  _wstartts, min(b), a,c from t1 session(ts,10s);
+sql create stream streams4 trigger at_once  watermark 1d into streamt4 as select  _wstartts, max(b), a,c from t1 session(ts,10s);
+sql create stream streams5 trigger at_once  watermark 1d into streamt5 as select  _wstartts, max(b), a,c from t1 session(ts,10s);
+sql create stream streams6 trigger at_once  watermark 1d into streamt6 as select  _wstartts, max(b), a,c from t1 session(ts,10s);
+sql insert into t1 values(1648791213001,1,1,1,1.0);
+sql insert into t1 values(1648791213002,2,3,2,3.4);
+sql insert into t1 values(1648791213003,4,9,3,4.8);
+sql insert into t1 values(1648791213004,4,5,4,4.8);
+
+sql insert into t1 values(1648791233004,3,4,0,2.1);
+sql insert into t1 values(1648791233005,3,0,6,3.4);
+sql insert into t1 values(1648791233006,3,6,7,7.6);
+sql insert into t1 values(1648791233007,3,13,8,7.6);
+
+
+sql insert into t1 values(1648791223004,20,7,9,10.1);
+
+$loop_count = 0
+loop3:
+sleep 300
+
+$loop_count = $loop_count + 1
+if $loop_count == 10 then
+  return -1
+endi
+
+sql select * from streamt3;
+if $rows == 0 then
+  print ======$rows
+  goto loop3
+endi
+
+sql select * from streamt4;
+if $rows == 0 then
+  print ======$rows
+  goto loop3
+endi
+
+sql select * from streamt5;
+if $rows == 0 then
+  print ======$rows
+  goto loop3
+endi
+
+sql select * from streamt6;
+if $rows == 0 then
+  print ======$rows
+  goto loop3
+endi
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT