diff --git a/include/libs/nodes/plannodes.h b/include/libs/nodes/plannodes.h
index 1e86a04775cd0a56c6581d1eb4ad87cf4d7c018b..31d67a85a7bea917a969b43226cba48717dbe77a 100644
--- a/include/libs/nodes/plannodes.h
+++ b/include/libs/nodes/plannodes.h
@@ -165,7 +165,8 @@ typedef struct SVnodeModifyLogicNode {
 
 typedef struct SExchangeLogicNode {
   SLogicNode node;
-  int32_t    srcGroupId;
+  int32_t    srcStartGroupId;
+  int32_t    srcEndGroupId;
 } SExchangeLogicNode;
 
 typedef struct SMergeLogicNode {
@@ -399,7 +400,10 @@ typedef struct SDownstreamSourceNode {
 
 typedef struct SExchangePhysiNode {
   SPhysiNode node;
-  int32_t    srcGroupId;  // group id of datasource suplans
+  // for set operators, there will be multiple execution groups under one exchange, and the ids of these execution
+  // groups are consecutive
+  int32_t    srcStartGroupId;
+  int32_t    srcEndGroupId;
   bool       singleChannel;
   SNodeList* pSrcEndPoints;  // element is SDownstreamSource, scheduler fill by calling qSetSuplanExecutionNode
 } SExchangePhysiNode;
diff --git a/source/libs/command/src/explain.c b/source/libs/command/src/explain.c
index 967c682b0bb701502dff90081fba8973a34bd22a..a1a8ed66e63261d9e32a0999e0c8e2570e6180dc 100644
--- a/source/libs/command/src/explain.c
+++ b/source/libs/command/src/explain.c
@@ -764,9 +764,9 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
     }
     case QUERY_NODE_PHYSICAL_PLAN_EXCHANGE: {
       SExchangePhysiNode *pExchNode = (SExchangePhysiNode *)pNode;
-      SExplainGroup      *group = taosHashGet(ctx->groupHash, &pExchNode->srcGroupId, sizeof(pExchNode->srcGroupId));
+      SExplainGroup      *group = taosHashGet(ctx->groupHash, &pExchNode->srcStartGroupId, sizeof(pExchNode->srcStartGroupId));
       if (NULL == group) {
-        qError("exchange src group %d not in groupHash", pExchNode->srcGroupId);
+        qError("exchange src group %d not in groupHash", pExchNode->srcStartGroupId);
         QRY_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
       }
 
@@ -801,7 +801,7 @@ int32_t qExplainResNodeToRowsImpl(SExplainResNode *pResNode, SExplainCtx *ctx, i
         }      
       }
 
-      QRY_ERR_RET(qExplainAppendGroupResRows(ctx, pExchNode->srcGroupId, level + 1));
+      QRY_ERR_RET(qExplainAppendGroupResRows(ctx, pExchNode->srcStartGroupId, level + 1));
       break;
     }
     case QUERY_NODE_PHYSICAL_PLAN_SORT: {
diff --git a/source/libs/nodes/src/nodesCloneFuncs.c b/source/libs/nodes/src/nodesCloneFuncs.c
index 0db19c8ba9c0c0c299f73ed4c0fad780f12c27ad..dbe08bb7b2a37f16ad3c0590ae21cfaccf4794cf 100644
--- a/source/libs/nodes/src/nodesCloneFuncs.c
+++ b/source/libs/nodes/src/nodesCloneFuncs.c
@@ -429,7 +429,8 @@ static int32_t logicVnodeModifCopy(const SVnodeModifyLogicNode* pSrc, SVnodeModi
 
 static int32_t logicExchangeCopy(const SExchangeLogicNode* pSrc, SExchangeLogicNode* pDst) {
   COPY_BASE_OBJECT_FIELD(node, logicNodeCopy);
-  COPY_SCALAR_FIELD(srcGroupId);
+  COPY_SCALAR_FIELD(srcStartGroupId);
+  COPY_SCALAR_FIELD(srcEndGroupId);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/source/libs/nodes/src/nodesCodeFuncs.c b/source/libs/nodes/src/nodesCodeFuncs.c
index 3242f20830662e2b0558790aee746d8c00dc09a7..af6c1757a9173dd0b9aeb649b07a3c7edcbc3002 100644
--- a/source/libs/nodes/src/nodesCodeFuncs.c
+++ b/source/libs/nodes/src/nodesCodeFuncs.c
@@ -726,14 +726,18 @@ static int32_t jsonToLogicVnodeModifyNode(const SJson* pJson, void* pObj) {
   return code;
 }
 
-static const char* jkExchangeLogicPlanSrcGroupId = "SrcGroupId";
+static const char* jkExchangeLogicPlanSrcStartGroupId = "SrcStartGroupId";
+static const char* jkExchangeLogicPlanSrcEndGroupId = "SrcEndGroupId";
 
 static int32_t logicExchangeNodeToJson(const void* pObj, SJson* pJson) {
   const SExchangeLogicNode* pNode = (const SExchangeLogicNode*)pObj;
 
   int32_t code = logicPlanNodeToJson(pObj, pJson);
   if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonAddIntegerToObject(pJson, jkExchangeLogicPlanSrcGroupId, pNode->srcGroupId);
+    code = tjsonAddIntegerToObject(pJson, jkExchangeLogicPlanSrcStartGroupId, pNode->srcStartGroupId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkExchangeLogicPlanSrcEndGroupId, pNode->srcEndGroupId);
   }
 
   return code;
@@ -744,7 +748,10 @@ static int32_t jsonToLogicExchangeNode(const SJson* pJson, void* pObj) {
 
   int32_t code = jsonToLogicPlanNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonGetIntValue(pJson, jkExchangeLogicPlanSrcGroupId, &pNode->srcGroupId);
+    code = tjsonGetIntValue(pJson, jkExchangeLogicPlanSrcStartGroupId, &pNode->srcStartGroupId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetIntValue(pJson, jkExchangeLogicPlanSrcEndGroupId, &pNode->srcEndGroupId);
   }
 
   return code;
@@ -1837,7 +1844,8 @@ static int32_t jsonToPhysiAggNode(const SJson* pJson, void* pObj) {
   return code;
 }
 
-static const char* jkExchangePhysiPlanSrcGroupId = "SrcGroupId";
+static const char* jkExchangePhysiPlanSrcStartGroupId = "SrcStartGroupId";
+static const char* jkExchangePhysiPlanSrcEndGroupId = "SrcEndGroupId";
 static const char* jkExchangePhysiPlanSrcEndPoints = "SrcEndPoints";
 
 static int32_t physiExchangeNodeToJson(const void* pObj, SJson* pJson) {
@@ -1845,7 +1853,10 @@ static int32_t physiExchangeNodeToJson(const void* pObj, SJson* pJson) {
 
   int32_t code = physicPlanNodeToJson(pObj, pJson);
   if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonAddIntegerToObject(pJson, jkExchangePhysiPlanSrcGroupId, pNode->srcGroupId);
+    code = tjsonAddIntegerToObject(pJson, jkExchangePhysiPlanSrcStartGroupId, pNode->srcStartGroupId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkExchangePhysiPlanSrcEndGroupId, pNode->srcEndGroupId);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = nodeListToJson(pJson, jkExchangePhysiPlanSrcEndPoints, pNode->pSrcEndPoints);
@@ -1859,7 +1870,10 @@ static int32_t jsonToPhysiExchangeNode(const SJson* pJson, void* pObj) {
 
   int32_t code = jsonToPhysicPlanNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
-    code = tjsonGetIntValue(pJson, jkExchangePhysiPlanSrcGroupId, &pNode->srcGroupId);
+    code = tjsonGetIntValue(pJson, jkExchangePhysiPlanSrcStartGroupId, &pNode->srcStartGroupId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetIntValue(pJson, jkExchangePhysiPlanSrcEndGroupId, &pNode->srcEndGroupId);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeList(pJson, jkExchangePhysiPlanSrcEndPoints, &pNode->pSrcEndPoints);
diff --git a/source/libs/nodes/src/nodesMsgFuncs.c b/source/libs/nodes/src/nodesMsgFuncs.c
index 2249cfe888946e0ec637c23bf5be34ce57853f61..0c6b11a765ca45311968929f035d21af1742f2f3 100644
--- a/source/libs/nodes/src/nodesMsgFuncs.c
+++ b/source/libs/nodes/src/nodesMsgFuncs.c
@@ -2380,7 +2380,8 @@ static int32_t msgToPhysiAggNode(STlvDecoder* pDecoder, void* pObj) {
 
 enum {
   PHY_EXCHANGE_CODE_BASE_NODE = 1,
-  PHY_EXCHANGE_CODE_SRC_GROUP_ID,
+  PHY_EXCHANGE_CODE_SRC_START_GROUP_ID,
+  PHY_EXCHANGE_CODE_SRC_END_GROUP_ID,
   PHY_EXCHANGE_CODE_SINGLE_CHANNEL,
   PHY_EXCHANGE_CODE_SRC_ENDPOINTS
 };
@@ -2390,7 +2391,10 @@ static int32_t physiExchangeNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
 
   int32_t code = tlvEncodeObj(pEncoder, PHY_EXCHANGE_CODE_BASE_NODE, physiNodeToMsg, &pNode->node);
   if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeI32(pEncoder, PHY_EXCHANGE_CODE_SRC_GROUP_ID, pNode->srcGroupId);
+    code = tlvEncodeI32(pEncoder, PHY_EXCHANGE_CODE_SRC_START_GROUP_ID, pNode->srcStartGroupId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, PHY_EXCHANGE_CODE_SRC_END_GROUP_ID, pNode->srcEndGroupId);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeBool(pEncoder, PHY_EXCHANGE_CODE_SINGLE_CHANNEL, pNode->singleChannel);
@@ -2412,8 +2416,11 @@ static int32_t msgToPhysiExchangeNode(STlvDecoder* pDecoder, void* pObj) {
       case PHY_EXCHANGE_CODE_BASE_NODE:
         code = tlvDecodeObjFromTlv(pTlv, msgToPhysiNode, &pNode->node);
         break;
-      case PHY_EXCHANGE_CODE_SRC_GROUP_ID:
-        code = tlvDecodeI32(pTlv, &pNode->srcGroupId);
+      case PHY_EXCHANGE_CODE_SRC_START_GROUP_ID:
+        code = tlvDecodeI32(pTlv, &pNode->srcStartGroupId);
+        break;
+      case PHY_EXCHANGE_CODE_SRC_END_GROUP_ID:
+        code = tlvDecodeI32(pTlv, &pNode->srcEndGroupId);
         break;
       case PHY_EXCHANGE_CODE_SINGLE_CHANNEL:
         code = tlvDecodeBool(pTlv, &pNode->singleChannel);
diff --git a/source/libs/planner/src/planPhysiCreater.c b/source/libs/planner/src/planPhysiCreater.c
index b0177e61ed290e8ef687e5de8c54c824545d8103..ec7050fdbc3dc1b9b13762182232322934082840 100644
--- a/source/libs/planner/src/planPhysiCreater.c
+++ b/source/libs/planner/src/planPhysiCreater.c
@@ -1046,7 +1046,8 @@ static int32_t doCreateExchangePhysiNode(SPhysiPlanContext* pCxt, SExchangeLogic
     return TSDB_CODE_OUT_OF_MEMORY;
   }
 
-  pExchange->srcGroupId = pExchangeLogicNode->srcGroupId;
+  pExchange->srcStartGroupId = pExchangeLogicNode->srcStartGroupId;
+  pExchange->srcEndGroupId = pExchangeLogicNode->srcEndGroupId;
   *pPhyNode = (SPhysiNode*)pExchange;
 
   return TSDB_CODE_SUCCESS;
@@ -1425,7 +1426,8 @@ static int32_t createExchangePhysiNodeByMerge(SMergePhysiNode* pMerge) {
   if (NULL == pExchange) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  pExchange->srcGroupId = pMerge->srcGroupId;
+  pExchange->srcStartGroupId = pMerge->srcGroupId;
+  pExchange->srcEndGroupId = pMerge->srcGroupId;
   pExchange->singleChannel = true;
   pExchange->node.pParent = (SPhysiNode*)pMerge;
   pExchange->node.pOutputDataBlockDesc = (SDataBlockDescNode*)nodesCloneNode((SNode*)pMerge->node.pOutputDataBlockDesc);
diff --git a/source/libs/planner/src/planSpliter.c b/source/libs/planner/src/planSpliter.c
index 106e6741522bba0a91f0a7763f313f7211c24f46..74ed3b57a4417aa43662bb722d3b78f3b13ee002 100644
--- a/source/libs/planner/src/planSpliter.c
+++ b/source/libs/planner/src/planSpliter.c
@@ -84,7 +84,8 @@ static int32_t splCreateExchangeNode(SSplitContext* pCxt, SLogicNode* pChild, SE
   if (NULL == pExchange) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  pExchange->srcGroupId = pCxt->groupId;
+  pExchange->srcStartGroupId = pCxt->groupId;
+  pExchange->srcEndGroupId = pCxt->groupId;
   pExchange->node.precision = pChild->precision;
   pExchange->node.pTargets = nodesCloneList(pChild->pTargets);
   if (NULL == pExchange->node.pTargets) {
@@ -112,7 +113,8 @@ static int32_t splCreateExchangeNodeForSubplan(SSplitContext* pCxt, SLogicSubpla
 
 static bool splIsChildSubplan(SLogicNode* pLogicNode, int32_t groupId) {
   if (QUERY_NODE_LOGIC_PLAN_EXCHANGE == nodeType(pLogicNode)) {
-    return ((SExchangeLogicNode*)pLogicNode)->srcGroupId == groupId;
+    return groupId >= ((SExchangeLogicNode*)pLogicNode)->srcStartGroupId &&
+           groupId <= ((SExchangeLogicNode*)pLogicNode)->srcEndGroupId;
   }
 
   if (QUERY_NODE_LOGIC_PLAN_MERGE == nodeType(pLogicNode)) {
@@ -1184,6 +1186,7 @@ static int32_t unionSplitSubplan(SSplitContext* pCxt, SLogicSubplan* pUnionSubpl
     if (TSDB_CODE_SUCCESS != code) {
       break;
     }
+    ++(pCxt->groupId);
   }
   if (TSDB_CODE_SUCCESS == code) {
     nodesDestroyList(pSubplanChildren);
@@ -1207,12 +1210,14 @@ static bool unAllSplFindSplitNode(SSplitContext* pCxt, SLogicSubplan* pSubplan,
   return false;
 }
 
-static int32_t unAllSplCreateExchangeNode(SSplitContext* pCxt, SLogicSubplan* pSubplan, SProjectLogicNode* pProject) {
+static int32_t unAllSplCreateExchangeNode(SSplitContext* pCxt, int32_t startGroupId, SLogicSubplan* pSubplan,
+                                          SProjectLogicNode* pProject) {
   SExchangeLogicNode* pExchange = (SExchangeLogicNode*)nodesMakeNode(QUERY_NODE_LOGIC_PLAN_EXCHANGE);
   if (NULL == pExchange) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  pExchange->srcGroupId = pCxt->groupId;
+  pExchange->srcStartGroupId = startGroupId;
+  pExchange->srcEndGroupId = pCxt->groupId - 1;
   pExchange->node.precision = pProject->node.precision;
   pExchange->node.pTargets = nodesCloneList(pProject->node.pTargets);
   if (NULL == pExchange->node.pTargets) {
@@ -1246,11 +1251,11 @@ static int32_t unionAllSplit(SSplitContext* pCxt, SLogicSubplan* pSubplan) {
     return TSDB_CODE_SUCCESS;
   }
 
+  int32_t startGroupId = pCxt->groupId;
   int32_t code = unionSplitSubplan(pCxt, info.pSubplan, (SLogicNode*)info.pProject);
   if (TSDB_CODE_SUCCESS == code) {
-    code = unAllSplCreateExchangeNode(pCxt, info.pSubplan, info.pProject);
+    code = unAllSplCreateExchangeNode(pCxt, startGroupId, info.pSubplan, info.pProject);
   }
-  ++(pCxt->groupId);
   pCxt->split = true;
   return code;
 }
@@ -1260,12 +1265,14 @@ typedef struct SUnionDistinctSplitInfo {
   SLogicSubplan* pSubplan;
 } SUnionDistinctSplitInfo;
 
-static int32_t unDistSplCreateExchangeNode(SSplitContext* pCxt, SLogicSubplan* pSubplan, SAggLogicNode* pAgg) {
+static int32_t unDistSplCreateExchangeNode(SSplitContext* pCxt, int32_t startGroupId, SLogicSubplan* pSubplan,
+                                           SAggLogicNode* pAgg) {
   SExchangeLogicNode* pExchange = (SExchangeLogicNode*)nodesMakeNode(QUERY_NODE_LOGIC_PLAN_EXCHANGE);
   if (NULL == pExchange) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  pExchange->srcGroupId = pCxt->groupId;
+  pExchange->srcStartGroupId = startGroupId;
+  pExchange->srcEndGroupId = pCxt->groupId - 1;
   pExchange->node.precision = pAgg->node.precision;
   pExchange->node.pTargets = nodesCloneList(pAgg->pGroupKeys);
   if (NULL == pExchange->node.pTargets) {
@@ -1293,11 +1300,11 @@ static int32_t unionDistinctSplit(SSplitContext* pCxt, SLogicSubplan* pSubplan)
     return TSDB_CODE_SUCCESS;
   }
 
+  int32_t startGroupId = pCxt->groupId;
   int32_t code = unionSplitSubplan(pCxt, info.pSubplan, (SLogicNode*)info.pAgg);
   if (TSDB_CODE_SUCCESS == code) {
-    code = unDistSplCreateExchangeNode(pCxt, info.pSubplan, info.pAgg);
+    code = unDistSplCreateExchangeNode(pCxt, startGroupId, info.pSubplan, info.pAgg);
   }
-  ++(pCxt->groupId);
   pCxt->split = true;
   return code;
 }
@@ -1430,7 +1437,7 @@ static const SSplitRule splitRuleSet[] = {
   {.pName = "SingleTableJoinSplit", .splitFunc = singleTableJoinSplit},
   {.pName = "UnionAllSplit",        .splitFunc = unionAllSplit},
   {.pName = "UnionDistinctSplit",   .splitFunc = unionDistinctSplit},
-  {.pName = "SmaIndexSplit",        .splitFunc = smaIndexSplit},
+  {.pName = "SmaIndexSplit",        .splitFunc = smaIndexSplit}, // not used yet
   {.pName = "InsertSelectSplit",    .splitFunc = insertSelectSplit}
 };
 // clang-format on
diff --git a/source/libs/planner/src/planner.c b/source/libs/planner/src/planner.c
index e4f02f12e698768f559bad30ef2a951022bb998e..53549c122d958bbb043f2e9c885d91ea2b742ad1 100644
--- a/source/libs/planner/src/planner.c
+++ b/source/libs/planner/src/planner.c
@@ -63,7 +63,7 @@ int32_t qCreateQueryPlan(SPlanContext* pCxt, SQueryPlan** pPlan, SArray* pExecNo
 static int32_t setSubplanExecutionNode(SPhysiNode* pNode, int32_t groupId, SDownstreamSourceNode* pSource) {
   if (QUERY_NODE_PHYSICAL_PLAN_EXCHANGE == nodeType(pNode)) {
     SExchangePhysiNode* pExchange = (SExchangePhysiNode*)pNode;
-    if (pExchange->srcGroupId == groupId) {
+    if (groupId >= pExchange->srcStartGroupId && groupId <= pExchange->srcEndGroupId) {
       return nodesListMakeStrictAppend(&pExchange->pSrcEndPoints, nodesCloneNode((SNode*)pSource));
     }
   } else if (QUERY_NODE_PHYSICAL_PLAN_MERGE == nodeType(pNode)) {