fix: some problems of parser

include/libs/nodes/plannodes.h

@@ -552,6 +552,8 @@ typedef struct SQueryPlan {
 
 void nodesWalkPhysiPlan(SNode* pNode, FNodeWalker walker, void* pContext);
 
+const char* dataOrderStr(EDataOrderLevel order);
+
 #ifdef __cplusplus
 }
 #endif

source/libs/nodes/src/nodesUtilFuncs.c

@@ -1818,3 +1818,19 @@ int32_t nodesMergeConds(SNode** pDst, SNodeList** pSrc) {
 
   return TSDB_CODE_SUCCESS;
 }
+
+const char* dataOrderStr(EDataOrderLevel order) {
+  switch (order) {
+    case DATA_ORDER_LEVEL_NONE:
+      return "no order required";
+    case DATA_ORDER_LEVEL_IN_BLOCK:
+      return "in-datablock order";
+    case DATA_ORDER_LEVEL_IN_GROUP:
+      return "in-group order";
+    case DATA_ORDER_LEVEL_GLOBAL:
+      return "global order";
+    default:
+      break;
+  }
+  return "unknown";
+}

source/libs/planner/src/planUtil.c

@@ -159,7 +159,10 @@ static bool isKeepOrderAggFunc(SNodeList* pFuncs) {
 static int32_t adjustAggDataRequirement(SAggLogicNode* pAgg, EDataOrderLevel requirement) {
   // The sort level of agg with group by output data can only be DATA_ORDER_LEVEL_NONE
   if (requirement > DATA_ORDER_LEVEL_NONE && (NULL != pAgg->pGroupKeys || !isKeepOrderAggFunc(pAgg->pAggFuncs))) {
-    planError("Illegal statement, should be intercepted in parser");
+    planError(
+        "The output of aggregate cannot meet the requirements(%s) of the upper operator. "
+        "Illegal statement, should be intercepted in parser",
+        dataOrderStr(requirement));
     return TSDB_CODE_PLAN_INTERNAL_ERROR;
   }
   pAgg->node.resultDataOrder = requirement;
@@ -232,7 +235,10 @@ static int32_t adjustSortDataRequirement(SSortLogicNode* pSort, EDataOrderLevel
 
 static int32_t adjustPartitionDataRequirement(SPartitionLogicNode* pPart, EDataOrderLevel requirement) {
   if (DATA_ORDER_LEVEL_GLOBAL == requirement) {
-    planError("Illegal statement, should be intercepted in parser");
+    planError(
+        "The output of partition cannot meet the requirements(%s) of the upper operator. "
+        "Illegal statement, should be intercepted in parser",
+        dataOrderStr(requirement));
     return TSDB_CODE_PLAN_INTERNAL_ERROR;
   }
   pPart->node.resultDataOrder = requirement;