From 6ed3b785e00abe17d6c5263584a79019f7a6bd0a Mon Sep 17 00:00:00 2001
From: yihaoDeng <yhdeng@taosdata.com>
Date: Wed, 4 Aug 2021 16:54:38 +0800
Subject: [PATCH] [TD-4199]<feature> enhance performance

---
 src/client/src/tscSQLParser.c | 1 +
 src/client/src/tscServer.c    | 1 +
 src/client/src/tscUtil.c      | 4 ++--
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 7aa4d5d0bd..294cbbf51d 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -8145,6 +8145,7 @@ int32_t loadAllTableMeta(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       void* pVgroupIdList = NULL;
       if (pTableMeta->tableType == TSDB_CHILD_TABLE) {
         code = tscCreateTableMetaFromSTableMeta((STableMeta **)(&pTableMeta), name, &tableMetaCapacity, (STableMeta **)(&pSTMeta));
+        pSql->pBuf = (void *)pSTMeta; 
 
         // create the child table meta from super table failed, try load it from mnode
         if (code != TSDB_CODE_SUCCESS) {
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 326dc14ecb..6f1d0baee8 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -2856,6 +2856,7 @@ int32_t tscGetTableMetaImpl(SSqlObj* pSql, STableMetaInfo *pTableMetaInfo, bool
     // in case of child table, here only get the
     if (pMeta->tableType == TSDB_CHILD_TABLE) {
       int32_t code = tscCreateTableMetaFromSTableMeta(&pTableMetaInfo->pTableMeta, name, &pTableMetaInfo->tableMetaCapacity, (STableMeta **)(&pSTMeta));
+      pSql->pBuf   = (void *)(pSTMeta); 
       if (code != TSDB_CODE_SUCCESS) {
         return getTableMetaFromMnode(pSql, pTableMetaInfo, autocreate);
       }
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 48f061f789..611384f4a7 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -4456,8 +4456,8 @@ int32_t tscCreateTableMetaFromSTableMeta(STableMeta** ppChild, const char* name,
   if (p != NULL && sz != 0) {
     memset((char *)p, 0, sz);
   }
-  taosHashGetCloneExt(tscTableMetaMap, pChild->sTableName, strnlen(pChild->sTableName, TSDB_TABLE_FNAME_LEN), NULL, (void **)ppSTable, &sz);
-  p = *ppSTable; 
+  taosHashGetCloneExt(tscTableMetaMap, pChild->sTableName, strnlen(pChild->sTableName, TSDB_TABLE_FNAME_LEN), NULL, (void **)&p, &sz);
+  *ppSTable = p; 
 
   // tableMeta exists, build child table meta according to the super table meta
   // the uid need to be checked in addition to the general name of the super table.