Merge pull request #4283 from taosdata/hotfix/regressionbug

[TD-225]

src/client/src/tscServer.c

@@ -790,7 +790,7 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   size_t output = tscNumOfFields(pQueryInfo);
 
   if ((tscIsSecondStageQuery(pQueryInfo) || UTIL_TABLE_IS_NORMAL_TABLE(pTableMetaInfo) ||
-      UTIL_TABLE_IS_CHILD_TABLE(pTableMetaInfo)) && (output != tscSqlExprNumOfExprs(pQueryInfo))) {
+      UTIL_TABLE_IS_CHILD_TABLE(pTableMetaInfo))) {
     pQueryMsg->secondStageOutput = htonl((int32_t) output);
 
     SSqlFuncMsg *pSqlFuncExpr1 = (SSqlFuncMsg *)pMsg;

src/query/src/qExecutor.c

@@ -5336,8 +5336,11 @@ static char *getArithemicInputSrc(void *param, const char *name, int32_t colId)
 }
 
 static void doSecondaryArithmeticProcess(SQuery* pQuery) {
-  SArithmeticSupport arithSup = {0};
+  if (pQuery->numOfExpr2 == 0) {
+    return;
+  }
 
+  SArithmeticSupport arithSup = {0};
   tFilePage **data = calloc(pQuery->numOfExpr2, POINTER_BYTES);
   for (int32_t i = 0; i < pQuery->numOfExpr2; ++i) {
     int32_t bytes = pQuery->pExpr2[i].bytes;