fix: some problems of parser and planner

include/libs/nodes/nodes.h

@@ -22,8 +22,8 @@ extern "C" {
 
 #include "tdef.h"
 
-#define nodeType(nodeptr)          (((const SNode*)(nodeptr))->type)
-#define setNodeType(nodeptr, type) (((SNode*)(nodeptr))->type = (type))
+#define nodeType(nodeptr)              (((const SNode*)(nodeptr))->type)
+#define setNodeType(nodeptr, nodetype) (((SNode*)(nodeptr))->type = (nodetype))
 
 #define LIST_LENGTH(l) (NULL != (l) ? (l)->length : 0)
 
@@ -118,6 +118,7 @@ typedef enum ENodeType {
   QUERY_NODE_DROP_TABLE_STMT,
   QUERY_NODE_DROP_SUPER_TABLE_STMT,
   QUERY_NODE_ALTER_TABLE_STMT,
+  QUERY_NODE_ALTER_SUPER_TABLE_STMT,
   QUERY_NODE_CREATE_USER_STMT,
   QUERY_NODE_ALTER_USER_STMT,
   QUERY_NODE_DROP_USER_STMT,

include/libs/scalar/scalar.h

@@ -25,6 +25,8 @@ extern "C" {
 
 typedef struct SFilterInfo SFilterInfo;
 
+int32_t scalarGetOperatorResultType(SDataType left, SDataType right, EOperatorType op, SDataType* pRes);
+
 /*
 pNode will be freed in API;
 *pRes need to freed in caller

include/util/taoserror.h

@@ -578,6 +578,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_PAR_INVALID_TABLE_OPTION      TAOS_DEF_ERROR_CODE(0, 0x265C)
 #define TSDB_CODE_PAR_INVALID_INTERP_CLAUSE     TAOS_DEF_ERROR_CODE(0, 0x265D)
 #define TSDB_CODE_PAR_NO_VALID_FUNC_IN_WIN      TAOS_DEF_ERROR_CODE(0, 0x265E)
+#define TSDB_CODE_PAR_ONLY_SUPPORT_SINGLE_TABLE TAOS_DEF_ERROR_CODE(0, 0x265F)
 
 //planner
 #define TSDB_CODE_PLAN_INTERNAL_ERROR           TAOS_DEF_ERROR_CODE(0, 0x2700)

source/libs/parser/inc/parAst.h

@@ -154,6 +154,7 @@ SNode* createAlterTableDropCol(SAstCreateContext* pCxt, SNode* pRealTable, int8_
 SNode* createAlterTableRenameCol(SAstCreateContext* pCxt, SNode* pRealTable, int8_t alterType, SToken* pOldColName,
                                  SToken* pNewColName);
 SNode* createAlterTableSetTag(SAstCreateContext* pCxt, SNode* pRealTable, SToken* pTagName, SNode* pVal);
+SNode* setAlterSuperTableType(SNode* pStmt);
 SNode* createUseDatabaseStmt(SAstCreateContext* pCxt, SToken* pDbName);
 SNode* createShowStmt(SAstCreateContext* pCxt, ENodeType type);
 SNode* createShowStmtWithCond(SAstCreateContext* pCxt, ENodeType type, SNode* pDbName, SNode* pTbName,

source/libs/parser/inc/parUtil.h

@@ -53,6 +53,7 @@ typedef struct SParseMetaCache {
 } SParseMetaCache;
 
 int32_t generateSyntaxErrMsg(SMsgBuf* pBuf, int32_t errCode, ...);
+int32_t generateSyntaxErrMsgExt(SMsgBuf* pBuf, int32_t errCode, const char* pFormat, ...);
 int32_t buildInvalidOperationMsg(SMsgBuf* pMsgBuf, const char* msg);
 int32_t buildSyntaxErrMsg(SMsgBuf* pBuf, const char* additionalInfo, const char* sourceStr);
 

source/libs/parser/inc/sql.y

@@ -232,7 +232,7 @@ cmd ::= DROP TABLE multi_drop_clause(A).
 cmd ::= DROP STABLE exists_opt(A) full_table_name(B).                             { pCxt->pRootNode = createDropSuperTableStmt(pCxt, A, B); }
 
 cmd ::= ALTER TABLE alter_table_clause(A).                                        { pCxt->pRootNode = A; }
-cmd ::= ALTER STABLE alter_table_clause(A).                                       { pCxt->pRootNode = A; }
+cmd ::= ALTER STABLE alter_table_clause(A).                                       { pCxt->pRootNode = setAlterSuperTableType(A); }
 
 alter_table_clause(A) ::= full_table_name(B) alter_table_options(C).              { A = createAlterTableModifyOptions(pCxt, B, C); }
 alter_table_clause(A) ::=
@@ -259,7 +259,7 @@ multi_create_clause(A) ::= multi_create_clause(B) create_subtable_clause(C).
 
 create_subtable_clause(A) ::=
   not_exists_opt(B) full_table_name(C) USING full_table_name(D)
-  specific_tags_opt(E) TAGS NK_LP literal_list(F) NK_RP table_options(G).         { A = createCreateSubTableClause(pCxt, B, C, D, E, F, G); }
+  specific_tags_opt(E) TAGS NK_LP expression_list(F) NK_RP table_options(G).      { A = createCreateSubTableClause(pCxt, B, C, D, E, F, G); }
 
 %type multi_drop_clause                                                           { SNodeList* }
 %destructor multi_drop_clause                                                     { nodesDestroyList($$); }

source/libs/parser/src/parAstCreater.c

@@ -1127,6 +1127,11 @@ SNode* createAlterTableSetTag(SAstCreateContext* pCxt, SNode* pRealTable, SToken
   return createAlterTableStmtFinalize(pRealTable, pStmt);
 }
 
+SNode* setAlterSuperTableType(SNode* pStmt) {
+  setNodeType(pStmt, QUERY_NODE_ALTER_SUPER_TABLE_STMT);
+  return pStmt;
+}
+
 SNode* createUseDatabaseStmt(SAstCreateContext* pCxt, SToken* pDbName) {
   CHECK_PARSER_STATUS(pCxt);
   if (!checkDbName(pCxt, pDbName, false)) {

source/libs/parser/src/parInsert.c

@@ -48,6 +48,12 @@
     pSql += sToken.n;                         \
   } while (TK_NK_SPACE == sToken.type)
 
+typedef struct SInsertParseBaseContext {
+  SParseContext* pComCxt;
+  char*          pSql;
+  SMsgBuf        msg;
+} SInsertParseBaseContext;
+
 typedef struct SInsertParseContext {
   SParseContext*     pComCxt;             // input
   char*              pSql;                // input
@@ -1105,6 +1111,32 @@ static int32_t storeTableMeta(SInsertParseContext* pCxt, SHashObj* pHash, SName*
   return taosHashPut(pHash, pName, len, &pBackup, POINTER_BYTES);
 }
 
+static int32_t skipParentheses(SInsertParseSyntaxCxt* pCxt) {
+  SToken  sToken;
+  int32_t expectRightParenthesis = 1;
+  while (1) {
+    NEXT_TOKEN(pCxt->pSql, sToken);
+    if (TK_NK_LP == sToken.type) {
+      ++expectRightParenthesis;
+    } else if (TK_NK_RP == sToken.type && 0 == --expectRightParenthesis) {
+      break;
+    }
+    if (0 == sToken.n) {
+      return buildSyntaxErrMsg(&pCxt->msg, ") expected", NULL);
+    }
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t skipBoundColumns(SInsertParseSyntaxCxt* pCxt) { return skipParentheses(pCxt); }
+
+static int32_t ignoreBoundColumns(SInsertParseContext* pCxt) {
+  SInsertParseSyntaxCxt cxt = {.pComCxt = pCxt->pComCxt, .pSql = pCxt->pSql, .msg = pCxt->msg, .pMetaCache = NULL};
+  int32_t               code = skipBoundColumns(&cxt);
+  pCxt->pSql = cxt.pSql;
+  return code;
+}
+
 static int32_t skipUsingClause(SInsertParseSyntaxCxt* pCxt);
 
 // pSql -> stb_name [(tag1_name, ...)] TAGS (tag1_value, ...)
@@ -1453,8 +1485,25 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
     tNameGetFullDbName(&name, dbFName);
     CHECK_CODE(taosHashPut(pCxt->pDbFNameHashObj, dbFName, strlen(dbFName), dbFName, sizeof(dbFName)));
 
+    bool existedUsing = false;
     // USING clause
     if (TK_USING == sToken.type) {
+      existedUsing = true;
+      CHECK_CODE(parseUsingClause(pCxt, &name, tbFName));
+      NEXT_TOKEN(pCxt->pSql, sToken);
+      autoCreateTbl = true;
+    }
+
+    char* pBoundColsStart = NULL;
+    if (TK_NK_LP == sToken.type) {
+      // pSql -> field1_name, ...)
+      pBoundColsStart = pCxt->pSql;
+      CHECK_CODE(ignoreBoundColumns(pCxt));
+      // CHECK_CODE(parseBoundColumns(pCxt, &dataBuf->boundColumnInfo, getTableColumnSchema(pCxt->pTableMeta)));
+      NEXT_TOKEN(pCxt->pSql, sToken);
+    }
+
+    if (TK_USING == sToken.type && !existedUsing) {
       CHECK_CODE(parseUsingClause(pCxt, &name, tbFName));
       NEXT_TOKEN(pCxt->pSql, sToken);
       autoCreateTbl = true;
@@ -1467,10 +1516,11 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
                                     sizeof(SSubmitBlk), getTableInfo(pCxt->pTableMeta).rowSize, pCxt->pTableMeta,
                                     &dataBuf, NULL, &pCxt->createTblReq));
 
-    if (TK_NK_LP == sToken.type) {
-      // pSql -> field1_name, ...)
+    if (NULL != pBoundColsStart) {
+      char* pCurrPos = pCxt->pSql;
+      pCxt->pSql = pBoundColsStart;
       CHECK_CODE(parseBoundColumns(pCxt, &dataBuf->boundColumnInfo, getTableColumnSchema(pCxt->pTableMeta)));
-      NEXT_TOKEN(pCxt->pSql, sToken);
+      pCxt->pSql = pCurrPos;
     }
 
     if (TK_VALUES == sToken.type) {
@@ -1610,25 +1660,6 @@ int32_t parseInsertSql(SParseContext* pContext, SQuery** pQuery, SParseMetaCache
   return code;
 }
 
-static int32_t skipParentheses(SInsertParseSyntaxCxt* pCxt) {
-  SToken  sToken;
-  int32_t expectRightParenthesis = 1;
-  while (1) {
-    NEXT_TOKEN(pCxt->pSql, sToken);
-    if (TK_NK_LP == sToken.type) {
-      ++expectRightParenthesis;
-    } else if (TK_NK_RP == sToken.type && 0 == --expectRightParenthesis) {
-      break;
-    }
-    if (0 == sToken.n) {
-      return buildSyntaxErrMsg(&pCxt->msg, ") expected", NULL);
-    }
-  }
-  return TSDB_CODE_SUCCESS;
-}
-
-static int32_t skipBoundColumns(SInsertParseSyntaxCxt* pCxt) { return skipParentheses(pCxt); }
-
 // pSql -> (field1_value, ...) [(field1_value2, ...) ...]
 static int32_t skipValuesClause(SInsertParseSyntaxCxt* pCxt) {
   int32_t numOfRows = 0;
@@ -1717,15 +1748,15 @@ static int32_t parseInsertBodySyntax(SInsertParseSyntaxCxt* pCxt) {
     SToken tbnameToken = sToken;
     NEXT_TOKEN(pCxt->pSql, sToken);
 
+    bool existedUsing = false;
     // USING clause
     if (TK_USING == sToken.type) {
+      existedUsing = true;
       CHECK_CODE(collectAutoCreateTableMetaKey(pCxt, &tbnameToken));
       NEXT_TOKEN(pCxt->pSql, sToken);
       CHECK_CODE(collectTableMetaKey(pCxt, &sToken));
       CHECK_CODE(skipUsingClause(pCxt));
       NEXT_TOKEN(pCxt->pSql, sToken);
-    } else {
-      CHECK_CODE(collectTableMetaKey(pCxt, &tbnameToken));
     }
 
     if (TK_NK_LP == sToken.type) {
@@ -1734,6 +1765,17 @@ static int32_t parseInsertBodySyntax(SInsertParseSyntaxCxt* pCxt) {
       NEXT_TOKEN(pCxt->pSql, sToken);
     }
 
+    if (TK_USING == sToken.type && !existedUsing) {
+      existedUsing = true;
+      CHECK_CODE(collectAutoCreateTableMetaKey(pCxt, &tbnameToken));
+      NEXT_TOKEN(pCxt->pSql, sToken);
+      CHECK_CODE(collectTableMetaKey(pCxt, &sToken));
+      CHECK_CODE(skipUsingClause(pCxt));
+      NEXT_TOKEN(pCxt->pSql, sToken);
+    } else {
+      CHECK_CODE(collectTableMetaKey(pCxt, &tbnameToken));
+    }
+
     if (TK_VALUES == sToken.type) {
       // pSql -> (field1_value, ...) [(field1_value2, ...) ...]
       CHECK_CODE(skipValuesClause(pCxt));

source/libs/parser/src/parTranslater.c

@@ -1248,6 +1248,22 @@ static int32_t translateForbidGroupByFunc(STranslateContext* pCxt, SFunctionNode
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t translateRepeatScanFunc(STranslateContext* pCxt, SFunctionNode* pFunc) {
+  if (!fmIsRepeatScanFunc(pFunc->funcId)) {
+    return TSDB_CODE_SUCCESS;
+  }
+  if (isSelectStmt(pCxt->pCurrStmt) && NULL != ((SSelectStmt*)pCxt->pCurrStmt)->pFromTable) {
+    SNode* pTable = ((SSelectStmt*)pCxt->pCurrStmt)->pFromTable;
+    if (QUERY_NODE_REAL_TABLE == nodeType(pTable) &&
+        (TSDB_CHILD_TABLE == ((SRealTableNode*)pTable)->pMeta->tableType ||
+         TSDB_NORMAL_TABLE == ((SRealTableNode*)pTable)->pMeta->tableType)) {
+      return TSDB_CODE_SUCCESS;
+    }
+  }
+  return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_ONLY_SUPPORT_SINGLE_TABLE,
+                                 "%s is only supported in single table query", pFunc->functionName);
+}
+
 static void setFuncClassification(SNode* pCurrStmt, SFunctionNode* pFunc) {
   if (NULL != pCurrStmt && QUERY_NODE_SELECT_STMT == nodeType(pCurrStmt)) {
     SSelectStmt* pSelect = (SSelectStmt*)pCurrStmt;
@@ -1370,6 +1386,9 @@ static int32_t translateNoramlFunction(STranslateContext* pCxt, SFunctionNode* p
   if (TSDB_CODE_SUCCESS == code) {
     code = translateForbidGroupByFunc(pCxt, pFunc);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = translateRepeatScanFunc(pCxt, pFunc);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     setFuncClassification(pCxt->pCurrStmt, pFunc);
   }
@@ -3743,12 +3762,24 @@ static int32_t buildAlterSuperTableReq(STranslateContext* pCxt, SAlterTableStmt*
   return TSDB_CODE_SUCCESS;
 }
 
-static SSchema* getColSchema(STableMeta* pTableMeta, const char* pTagName) {
+static SSchema* getColSchema(STableMeta* pTableMeta, const char* pColName) {
   int32_t numOfFields = getNumOfTags(pTableMeta) + getNumOfColumns(pTableMeta);
   for (int32_t i = 0; i < numOfFields; ++i) {
-    SSchema* pTagSchema = pTableMeta->schema + i;
-    if (0 == strcmp(pTagName, pTagSchema->name)) {
-      return pTagSchema;
+    SSchema* pSchema = pTableMeta->schema + i;
+    if (0 == strcmp(pColName, pSchema->name)) {
+      return pSchema;
+    }
+  }
+  return NULL;
+}
+
+static SSchema* getTagSchema(STableMeta* pTableMeta, const char* pTagName) {
+  int32_t  numOfTags = getNumOfTags(pTableMeta);
+  SSchema* pTagsSchema = getTableTagSchema(pTableMeta);
+  for (int32_t i = 0; i < numOfTags; ++i) {
+    SSchema* pSchema = pTagsSchema + i;
+    if (0 == strcmp(pTagName, pSchema->name)) {
+      return pSchema;
     }
   }
   return NULL;
@@ -3756,19 +3787,24 @@ static SSchema* getColSchema(STableMeta* pTableMeta, const char* pTagName) {
 
 static int32_t checkAlterSuperTable(STranslateContext* pCxt, SAlterTableStmt* pStmt) {
   if (TSDB_ALTER_TABLE_UPDATE_TAG_VAL == pStmt->alterType || TSDB_ALTER_TABLE_UPDATE_COLUMN_NAME == pStmt->alterType) {
-    return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_ALTER_TABLE);
+    return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_ALTER_TABLE,
+                                   "Set tag value only available for child table");
   }
   if (TSDB_ALTER_TABLE_UPDATE_COLUMN_BYTES == pStmt->alterType ||
       TSDB_ALTER_TABLE_UPDATE_TAG_BYTES == pStmt->alterType) {
     STableMeta* pTableMeta = NULL;
     int32_t     code = getTableMeta(pCxt, pStmt->dbName, pStmt->tableName, &pTableMeta);
     if (TSDB_CODE_SUCCESS == code) {
+      if (TSDB_SUPER_TABLE != pTableMeta->tableType) {
+        return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_ALTER_TABLE, "Table is not super table");
+      }
+
       SSchema* pSchema = getColSchema(pTableMeta, pStmt->colName);
       if (NULL == pSchema) {
-        code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_COLUMN, pStmt->colName);
+        return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_COLUMN, pStmt->colName);
       } else if (!IS_VAR_DATA_TYPE(pSchema->type) || pSchema->type != pStmt->dataType.type ||
                  pSchema->bytes >= calcTypeBytes(pStmt->dataType)) {
-        code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_MODIFY_COL);
+        return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_MODIFY_COL);
       }
     }
     return code;
@@ -4455,6 +4491,7 @@ static int32_t translateQuery(STranslateContext* pCxt, SNode* pNode) {
       code = translateDropSuperTable(pCxt, (SDropSuperTableStmt*)pNode);
       break;
     case QUERY_NODE_ALTER_TABLE_STMT:
+    case QUERY_NODE_ALTER_SUPER_TABLE_STMT:
       code = translateAlterSuperTable(pCxt, (SAlterTableStmt*)pNode);
       break;
     case QUERY_NODE_CREATE_USER_STMT:
@@ -5222,31 +5259,81 @@ static void addCreateTbReqIntoVgroup(int32_t acctId, SHashObj* pVgroupHashmap, S
   }
 }
 
-static int32_t createValueFromFunction(STranslateContext* pCxt, SFunctionNode* pFunc, SValueNode** pVal) {
-  int32_t code = getFuncInfo(pCxt, pFunc);
-  if (TSDB_CODE_SUCCESS == code) {
-    code = scalarCalculateConstants((SNode*)pFunc, (SNode**)pVal);
-  }
-  return code;
-}
+// static int32_t createValueFromFunction(STranslateContext* pCxt, SFunctionNode* pFunc, SValueNode** pVal) {
+//   int32_t code = getFuncInfo(pCxt, pFunc);
+//   if (TSDB_CODE_SUCCESS == code) {
+//     code = scalarCalculateConstants((SNode*)pFunc, (SNode**)pVal);
+//   }
+//   return code;
+// }
 
 static SDataType schemaToDataType(uint8_t precision, SSchema* pSchema) {
   SDataType dt = {.type = pSchema->type, .bytes = pSchema->bytes, .precision = precision, .scale = 0};
   return dt;
 }
 
-static int32_t translateTagVal(STranslateContext* pCxt, uint8_t precision, SSchema* pSchema, SNode* pNode,
-                               SValueNode** pVal) {
-  if (QUERY_NODE_FUNCTION == nodeType(pNode)) {
-    return createValueFromFunction(pCxt, (SFunctionNode*)pNode, pVal);
-  } else if (QUERY_NODE_VALUE == nodeType(pNode)) {
-    return (DEAL_RES_ERROR == translateValueImpl(pCxt, (SValueNode*)pNode, schemaToDataType(precision, pSchema))
-                ? pCxt->errCode
-                : TSDB_CODE_SUCCESS);
+// static int32_t createValueFromExpr(STranslateContext* pCxt, SNode* pNode, SValueNode** pVal) {
+//   SNode* pExpr = nodesCloneNode(pNode);
+//   if (NULL == pExpr) {
+//     return TSDB_CODE_OUT_OF_MEMORY;
+//   }
+
+//   SNode*  pNew = NULL;
+//   int32_t code = translateExpr(pCxt, &pExpr);
+//   if (TSDB_CODE_SUCCESS == code) {
+//     code = scalarCalculateConstants(pExpr, &pNew);
+//   }
+//   if (TSDB_CODE_SUCCESS == code) {
+//     pExpr = pNew;
+//     if (QUERY_NODE_VALUE != nodeType(pExpr)) {
+//       code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_WRONG_VALUE_TYPE, ((SExprNode*)pExpr)->aliasName);
+//     }
+//   }
+
+//   if (TSDB_CODE_SUCCESS == code) {
+//     *pVal = pExpr;
+//   } else {
+//     nodesDestroyNode(pExpr);
+//   }
+//   return code;
+// }
+
+static int32_t createCastFuncForTag(STranslateContext* pCxt, SNode* pNode, SDataType dt, SNode** pCast) {
+  SNode* pExpr = nodesCloneNode(pNode);
+  if (NULL == pExpr) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  int32_t code = createCastFunc(pCxt, pExpr, dt, pCast);
+  if (TSDB_CODE_SUCCESS != code) {
+    nodesDestroyNode(pExpr);
+  }
+  return code;
+}
+
+static int32_t createTagVal(STranslateContext* pCxt, uint8_t precision, SSchema* pSchema, SNode* pNode,
+                            SValueNode** pVal) {
+  SNode*  pCast = NULL;
+  int32_t code = createCastFuncForTag(pCxt, pNode, schemaToDataType(precision, pSchema), &pCast);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = translateExpr(pCxt, &pCast);
+  }
+  SNode* pNew = NULL;
+  if (TSDB_CODE_SUCCESS == code) {
+    code = scalarCalculateConstants(pCast, &pNew);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    pCast = pNew;
+    if (QUERY_NODE_VALUE != nodeType(pCast)) {
+      code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_WRONG_VALUE_TYPE, ((SExprNode*)pNode)->aliasName);
+    }
+  }
+
+  if (TSDB_CODE_SUCCESS == code) {
+    *pVal = (SValueNode*)pCast;
   } else {
-    // return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_WRONG_VALUE_TYPE, ((SExprNode*)pNode)->aliasName);
-    return TSDB_CODE_FAILED;
+    nodesDestroyNode(pCast);
   }
+  return code;
 }
 
 static int32_t buildJsonTagVal(STranslateContext* pCxt, SSchema* pTagSchema, SValueNode* pVal, SArray* pTagArray,
@@ -5285,56 +5372,45 @@ static int32_t buildKVRowForBindTags(STranslateContext* pCxt, SCreateSubTableCla
   if (NULL == pTagArray) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  int32_t  code = TSDB_CODE_SUCCESS;
-  SSchema* pTagSchema = getTableTagSchema(pSuperTableMeta);
-  SNode *  pTag = NULL, *pNode = NULL;
-  bool     isJson = false;
+
+  int32_t code = TSDB_CODE_SUCCESS;
+
+  bool       isJson = false;
+  SNodeList* pVals = NULL;
+  SNode *    pTag = NULL, *pNode = NULL;
   FORBOTH(pTag, pStmt->pSpecificTags, pNode, pStmt->pValsOfTags) {
     SColumnNode* pCol = (SColumnNode*)pTag;
-    SSchema*     pSchema = NULL;
-    for (int32_t i = 0; i < numOfTags; ++i) {
-      if (0 == strcmp(pCol->colName, pTagSchema[i].name)) {
-        pSchema = pTagSchema + i;
-        break;
-      }
-    }
+    SSchema*     pSchema = getTagSchema(pSuperTableMeta, pCol->colName);
     if (NULL == pSchema) {
       code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_TAG_NAME, pCol->colName);
-      goto end;
     }
     SValueNode* pVal = NULL;
-    code = translateTagVal(pCxt, pSuperTableMeta->tableInfo.precision, pSchema, pNode, &pVal);
-    if (TSDB_CODE_SUCCESS != code) {
-      goto end;
+    if (TSDB_CODE_SUCCESS == code) {
+      code = createTagVal(pCxt, pSuperTableMeta->tableInfo.precision, pSchema, pNode, &pVal);
     }
-
-    if (NULL == pVal) {
-      pVal = (SValueNode*)pNode;
-    } else {
-      REPLACE_LIST2_NODE(pVal);
+    if (TSDB_CODE_SUCCESS == code) {
+      if (pSchema->type == TSDB_DATA_TYPE_JSON) {
+        isJson = true;
+        code = buildJsonTagVal(pCxt, pSchema, pVal, pTagArray, ppTag);
+      } else if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL) {
+        code = buildNormalTagVal(pCxt, pSchema, pVal, pTagArray);
+      }
     }
-
-    if (pSchema->type == TSDB_DATA_TYPE_JSON) {
-      isJson = true;
-      code = buildJsonTagVal(pCxt, pSchema, pVal, pTagArray, ppTag);
-    } else if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL) {
-      code = buildNormalTagVal(pCxt, pSchema, pVal, pTagArray);
+    if (TSDB_CODE_SUCCESS == code) {
+      code = nodesListMakeAppend(&pVals, (SNode*)pVal);
+    }
+    if (TSDB_CODE_SUCCESS != code) {
+      break;
     }
   }
 
-  if (!isJson) code = tTagNew(pTagArray, 1, false, ppTag);
-
-end:
-  if (isJson) {
-    for (int i = 0; i < taosArrayGetSize(pTagArray); ++i) {
-      STagVal* p = (STagVal*)taosArrayGet(pTagArray, i);
-      if (IS_VAR_DATA_TYPE(p->type)) {
-        taosMemoryFree(p->pData);
-      }
-    }
+  if (TSDB_CODE_SUCCESS == code && !isJson) {
+    code = tTagNew(pTagArray, 1, false, ppTag);
   }
+
+  nodesDestroyList(pVals);
   taosArrayDestroy(pTagArray);
-  return TSDB_CODE_SUCCESS;
+  return code;
 }
 
 static int32_t buildKVRowForAllTags(STranslateContext* pCxt, SCreateSubTableClause* pStmt, STableMeta* pSuperTableMeta,
@@ -5343,64 +5419,52 @@ static int32_t buildKVRowForAllTags(STranslateContext* pCxt, SCreateSubTableClau
     return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_TAGS_NOT_MATCHED);
   }
 
-  SSchema* pTagSchemas = getTableTagSchema(pSuperTableMeta);
-  SNode*   pNode;
-  int32_t  code = TSDB_CODE_SUCCESS;
-  int32_t  index = 0;
-  SArray*  pTagArray = taosArrayInit(LIST_LENGTH(pStmt->pValsOfTags), sizeof(STagVal));
-  if (!pTagArray) {
-    return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_TSC_OUT_OF_MEMORY);
+  SArray* pTagArray = taosArrayInit(LIST_LENGTH(pStmt->pValsOfTags), sizeof(STagVal));
+  if (NULL == pTagArray) {
+    return TSDB_CODE_OUT_OF_MEMORY;
   }
 
-  bool isJson = false;
+  int32_t code = TSDB_CODE_SUCCESS;
+
+  bool       isJson = false;
+  int32_t    index = 0;
+  SSchema*   pTagSchemas = getTableTagSchema(pSuperTableMeta);
+  SNodeList* pVals = NULL;
+  SNode*     pNode;
   FOREACH(pNode, pStmt->pValsOfTags) {
     SValueNode* pVal = NULL;
     SSchema*    pTagSchema = pTagSchemas + index;
-    code = translateTagVal(pCxt, pSuperTableMeta->tableInfo.precision, pTagSchema, pNode, &pVal);
-    if (TSDB_CODE_SUCCESS != code) {
-      goto end;
+    code = createTagVal(pCxt, pSuperTableMeta->tableInfo.precision, pTagSchema, pNode, &pVal);
+    if (TSDB_CODE_SUCCESS == code) {
+      if (pTagSchema->type == TSDB_DATA_TYPE_JSON) {
+        isJson = true;
+        code = buildJsonTagVal(pCxt, pTagSchema, pVal, pTagArray, ppTag);
+      } else if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL && !pVal->isNull) {
+        char*   tmpVal = nodesGetValueFromNode(pVal);
+        STagVal val = {.cid = pTagSchema->colId, .type = pTagSchema->type};
+        if (IS_VAR_DATA_TYPE(pTagSchema->type)) {
+          val.pData = varDataVal(tmpVal);
+          val.nData = varDataLen(tmpVal);
+        } else {
+          memcpy(&val.i64, tmpVal, pTagSchema->bytes);
+        }
+        taosArrayPush(pTagArray, &val);
+      }
     }
-    if (NULL == pVal) {
-      pVal = (SValueNode*)pNode;
-    } else {
-      REPLACE_NODE(pVal);
+    if (TSDB_CODE_SUCCESS == code) {
+      code = nodesListMakeAppend(&pVals, (SNode*)pVal);
     }
-    if (pTagSchema->type == TSDB_DATA_TYPE_JSON) {
-      if (pVal->literal && strlen(pVal->literal) > (TSDB_MAX_JSON_TAG_LEN - VARSTR_HEADER_SIZE) / TSDB_NCHAR_SIZE) {
-        code = buildSyntaxErrMsg(&pCxt->msgBuf, "json string too long than 4095", pVal->literal);
-        goto end;
-      }
-
-      isJson = true;
-      code = parseJsontoTagData(pVal->literal, pTagArray, ppTag, &pCxt->msgBuf);
-      if (code != TSDB_CODE_SUCCESS) {
-        goto end;
-      }
-    } else if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL && !pVal->isNull) {
-      char*   tmpVal = nodesGetValueFromNode(pVal);
-      STagVal val = {.cid = pTagSchema->colId, .type = pTagSchema->type};
-      if (IS_VAR_DATA_TYPE(pTagSchema->type)) {
-        val.pData = varDataVal(tmpVal);
-        val.nData = varDataLen(tmpVal);
-      } else {
-        memcpy(&val.i64, tmpVal, pTagSchema->bytes);
-      }
-      taosArrayPush(pTagArray, &val);
+    if (TSDB_CODE_SUCCESS != code) {
+      break;
     }
     ++index;
   }
-  if (!isJson) code = tTagNew(pTagArray, 1, false, ppTag);
 
-end:
-  if (isJson) {
-    for (int i = 0; i < taosArrayGetSize(pTagArray); ++i) {
-      STagVal* p = (STagVal*)taosArrayGet(pTagArray, i);
-      if (IS_VAR_DATA_TYPE(p->type)) {
-        taosMemoryFree(p->pData);
-      }
-    }
+  if (TSDB_CODE_SUCCESS == code && !isJson) {
+    code = tTagNew(pTagArray, 1, false, ppTag);
   }
 
+  nodesDestroyList(pVals);
   taosArrayDestroy(pTagArray);
   return code;
 }

source/libs/parser/src/parUtil.c

@@ -215,13 +215,21 @@ int32_t generateSyntaxErrMsg(SMsgBuf* pBuf, int32_t errCode, ...) {
   return errCode;
 }
 
+int32_t generateSyntaxErrMsgExt(SMsgBuf* pBuf, int32_t errCode, const char* pFormat, ...) {
+  va_list vArgList;
+  va_start(vArgList, pFormat);
+  vsnprintf(pBuf->buf, pBuf->len, pFormat, vArgList);
+  va_end(vArgList);
+  return errCode;
+}
+
 int32_t buildInvalidOperationMsg(SMsgBuf* pBuf, const char* msg) {
   strncpy(pBuf->buf, msg, pBuf->len);
   return TSDB_CODE_TSC_INVALID_OPERATION;
 }
 
 int32_t buildSyntaxErrMsg(SMsgBuf* pBuf, const char* additionalInfo, const char* sourceStr) {
-  if(pBuf == NULL) return TSDB_CODE_TSC_SQL_SYNTAX_ERROR;
+  if (pBuf == NULL) return TSDB_CODE_TSC_SQL_SYNTAX_ERROR;
   const char* msgFormat1 = "syntax error near \'%s\'";
   const char* msgFormat2 = "syntax error near \'%s\' (%s)";
   const char* msgFormat3 = "%s";

source/libs/planner/src/planOptimizer.c

@@ -1868,6 +1868,8 @@ static EDealRes mergeProjectionsExpr(SNode** pNode, void* pContext) {
               pCxt->errCode = terrno;
               return DEAL_RES_ERROR;
             }
+            snprintf(((SExprNode*)pExpr)->aliasName, sizeof(((SExprNode*)pExpr)->aliasName), "%s",
+                     ((SExprNode*)*pNode)->aliasName);
             nodesDestroyNode(*pNode);
             *pNode = pExpr;
           }

source/libs/planner/src/planSpliter.c

@@ -986,6 +986,10 @@ static bool unionIsChildSubplan(SLogicNode* pLogicNode, int32_t groupId) {
     return ((SExchangeLogicNode*)pLogicNode)->srcGroupId == groupId;
   }
 
+  if (QUERY_NODE_LOGIC_PLAN_MERGE == nodeType(pLogicNode)) {
+    return ((SMergeLogicNode*)pLogicNode)->srcGroupId == groupId;
+  }
+
   SNode* pChild;
   FOREACH(pChild, pLogicNode->pChildren) {
     bool isChild = unionIsChildSubplan((SLogicNode*)pChild, groupId);

source/libs/planner/test/planSetOpTest.cpp

@@ -97,7 +97,15 @@ TEST_F(PlanSetOpTest, unionSubquery) {
   run("SELECT * FROM (SELECT c1, c2 FROM t1 UNION SELECT c1, c2 FROM t1)");
 }
 
-TEST_F(PlanSetOpTest, bug001) {
+TEST_F(PlanSetOpTest, unionWithSubquery) {
+  useDb("root", "test");
+
+  run("SELECT c1 FROM (SELECT c1 FROM st1) UNION SELECT c2 FROM (SELECT c1 AS c2 FROM st2)");
+
+  run("SELECT c1 FROM (SELECT c1 FROM st1 ORDER BY c2) UNION SELECT c1 FROM (SELECT c1 FROM st2)");
+}
+
+TEST_F(PlanSetOpTest, unionDataTypeConversion) {
   useDb("root", "test");
 
   run("SELECT c2 FROM t1 WHERE c1 IS NOT NULL GROUP BY c2 "