diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 2a7678ffab074f8ba9e94eedc805863e1206c65d..e192c143d9317d09e8c83feb5bd494bb953be4cd 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -7493,6 +7493,13 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
         }
       }
     }
+
+    // set order by info
+    STableMeta* pTableMeta = tscGetMetaInfo(pQueryInfo, 0)->pTableMeta;
+    if (validateOrderbyNode(pCmd, pQueryInfo, pSqlNode, tscGetTableSchema(pTableMeta)) !=
+        TSDB_CODE_SUCCESS) {
+      return TSDB_CODE_TSC_INVALID_OPERATION;
+    }
   } else {
     pQueryInfo->command = TSDB_SQL_SELECT;
 
@@ -7642,8 +7649,8 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
 
     SExprInfo** p = NULL;
     int32_t numOfExpr = 0;
+    pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
     code = createProjectionExpr(pQueryInfo, pTableMetaInfo, &p, &numOfExpr);
-
     if (pQueryInfo->exprList1 == NULL) {
       pQueryInfo->exprList1 = taosArrayInit(4, POINTER_BYTES);
     }
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index c114bfd9b7887e3f86717f03da6f3ae34b38aad5..0f5fb8c2c8a9fe12d56454019559bfb88703c615 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -777,7 +777,9 @@ SSDataBlock* doGetDataBlock(void* param, bool* newgroup) {
   SSqlRes* pRes = &pSql->res;
 
   SSDataBlock* pBlock = pInput->block;
-  pOperator->pRuntimeEnv->current = pInput->pTableQueryInfo;
+  if (pOperator->pRuntimeEnv != NULL) {
+    pOperator->pRuntimeEnv->current = pInput->pTableQueryInfo;
+  }
 
   pBlock->info.rows = pRes->numOfRows;
   if (pRes->numOfRows != 0) {
@@ -801,6 +803,24 @@ SSDataBlock* doGetDataBlock(void* param, bool* newgroup) {
   return pBlock;
 }
 
+static void fetchNextBlockIfCompleted(SOperatorInfo* pOperator, bool* newgroup) {
+  SJoinOperatorInfo* pJoinInfo = pOperator->info;
+
+  for (int32_t i = 0; i < pOperator->numOfUpstream; ++i) {
+    SJoinStatus* pStatus = &pJoinInfo->status[i];
+    if (pStatus->pBlock == NULL || pStatus->index >= pStatus->pBlock->info.rows) {
+      pStatus->pBlock = pOperator->upstream[i]->exec(pOperator->upstream[i], newgroup);
+      pStatus->index = 0;
+
+      if (pStatus->pBlock == NULL) {
+        pOperator->status = OP_EXEC_DONE;
+        pJoinInfo->resultInfo.total += pJoinInfo->pRes->info.rows;
+        break;
+      }
+    }
+  }
+}
+
 SSDataBlock* doDataBlockJoin(void* param, bool* newgroup) {
   SOperatorInfo *pOperator = (SOperatorInfo*) param;
   if (pOperator->status == OP_EXEC_DONE) {
@@ -813,19 +833,9 @@ SSDataBlock* doDataBlockJoin(void* param, bool* newgroup) {
   pJoinInfo->pRes->info.rows = 0;
 
   while(1) {
-    for (int32_t i = 0; i < pOperator->numOfUpstream; ++i) {
-      SJoinStatus* pStatus = &pJoinInfo->status[i];
-      if (pStatus->pBlock == NULL || pStatus->index >= pStatus->pBlock->info.rows) {
-        pStatus->pBlock = pOperator->upstream[i]->exec(pOperator->upstream[i], newgroup);
-        pStatus->index = 0;
-
-        if (pStatus->pBlock == NULL) {
-          pOperator->status = OP_EXEC_DONE;
-
-          pJoinInfo->resultInfo.total += pJoinInfo->pRes->info.rows;
-          return pJoinInfo->pRes;
-        }
-      }
+    fetchNextBlockIfCompleted(pOperator, newgroup);
+    if (pOperator->status == OP_EXEC_DONE) {
+      return pJoinInfo->pRes;
     }
 
     SJoinStatus* st0 = &pJoinInfo->status[0];
@@ -844,8 +854,12 @@ SSDataBlock* doDataBlockJoin(void* param, bool* newgroup) {
 
         if (ts[st->index] < ts0[st0->index]) {  // less than the first
           prefixEqual = false;
+
           if ((++(st->index)) >= st->pBlock->info.rows) {
-            break;
+            fetchNextBlockIfCompleted(pOperator, newgroup);
+            if (pOperator->status == OP_EXEC_DONE) {
+              return pJoinInfo->pRes;
+            }
           }
         } else if (ts[st->index] > ts0[st0->index]) {  // greater than the first;
           if (prefixEqual == true) {
@@ -853,12 +867,19 @@ SSDataBlock* doDataBlockJoin(void* param, bool* newgroup) {
             for (int32_t j = 0; j < i; ++j) {
               SJoinStatus* stx = &pJoinInfo->status[j];
               if ((++(stx->index)) >= stx->pBlock->info.rows) {
-                break;
+
+                fetchNextBlockIfCompleted(pOperator, newgroup);
+                if (pOperator->status == OP_EXEC_DONE) {
+                  return pJoinInfo->pRes;
+                }
               }
             }
           } else {
             if ((++(st0->index)) >= st0->pBlock->info.rows) {
-              break;
+              fetchNextBlockIfCompleted(pOperator, newgroup);
+              if (pOperator->status == OP_EXEC_DONE) {
+                return pJoinInfo->pRes;
+              }
             }
           }
         }
@@ -1129,6 +1150,19 @@ void handleDownstreamOperator(SSqlObj** pSqlObjList, int32_t numOfUpstream, SQue
       memcpy(schema, pSchema, numOfCol1*sizeof(SSchema));
     }
 
+    // update the exprinfo
+    int32_t numOfOutput = (int32_t)tscNumOfExprs(px);
+    for(int32_t i = 0; i < numOfOutput; ++i) {
+      SExprInfo* pex = taosArrayGetP(px->exprList, i);
+      int32_t colId = pex->base.colInfo.colId;
+      for(int32_t j = 0; j < pSourceOperator->numOfOutput; ++j) {
+        if (colId == schema[j].colId) {
+          pex->base.colInfo.colIndex = j;
+          break;
+        }
+      }
+    }
+
     px->pQInfo = createQInfoFromQueryNode(px, &tableGroupInfo, pSourceOperator, NULL, NULL, MASTER_SCAN);
     tfree(pColumnInfo);
     tfree(schema);
diff --git a/src/query/src/qAggMain.c b/src/query/src/qAggMain.c
index 8a38c56adc550c6fbd02b321a851b505c020956c..ae8c717abdac75635d5522e70a9e6a45a06bbe5a 100644
--- a/src/query/src/qAggMain.c
+++ b/src/query/src/qAggMain.c
@@ -2489,7 +2489,6 @@ static void buildTopBotStruct(STopBotInfo *pTopBotInfo, SQLFunctionCtx *pCtx) {
   tmp += POINTER_BYTES * pCtx->param[0].i64;
   
   size_t size = sizeof(tValuePair) + pCtx->tagInfo.tagsLen;
-//  assert(pCtx->param[0].i64 > 0);
 
   for (int32_t i = 0; i < pCtx->param[0].i64; ++i) {
     pTopBotInfo->res[i] = (tValuePair*) tmp;
@@ -2498,7 +2497,6 @@ static void buildTopBotStruct(STopBotInfo *pTopBotInfo, SQLFunctionCtx *pCtx) {
   }
 }
 
-
 bool topbot_datablock_filter(SQLFunctionCtx *pCtx, const char *minval, const char *maxval) {
   SResultRowCellInfo *pResInfo = GET_RES_INFO(pCtx);
   if (pResInfo == NULL) {
@@ -2742,7 +2740,7 @@ static void top_bottom_func_finalizer(SQLFunctionCtx *pCtx) {
   if (pCtx->param[1].i64 == PRIMARYKEY_TIMESTAMP_COL_INDEX) {
     __compar_fn_t comparator = (pCtx->param[2].i64 == TSDB_ORDER_ASC) ? resAscComparFn : resDescComparFn;
     qsort(tvp, (size_t)pResInfo->numOfRes, POINTER_BYTES, comparator);
-  } else if (pCtx->param[1].i64 > PRIMARYKEY_TIMESTAMP_COL_INDEX) {
+  } else /*if (pCtx->param[1].i64 > PRIMARYKEY_TIMESTAMP_COL_INDEX)*/ {
     __compar_fn_t comparator = (pCtx->param[2].i64 == TSDB_ORDER_ASC) ? resDataAscComparFn : resDataDescComparFn;
     qsort(tvp, (size_t)pResInfo->numOfRes, POINTER_BYTES, comparator);
   }