From ab1ee971227a3124d22d010a9fe6ab502beee8b8 Mon Sep 17 00:00:00 2001
From: Bomin Zhang <bmzhang@taosdata.com>
Date: Mon, 12 Oct 2020 14:56:46 +0800
Subject: [PATCH] fix td-1675

---
 src/tsdb/src/tsdbRead.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index d3f4747a96..f0a2694b60 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -2639,8 +2639,7 @@ int32_t tsdbGetTableGroupFromIdList(TSDB_REPO_T* tsdb, SArray* pTableIdList, STa
   pGroupInfo->pGroupList = taosArrayInit(1, POINTER_BYTES);
   SArray* group = taosArrayInit(1, sizeof(STableKeyInfo));
 
-  int32_t i = 0;
-  for(; i < size; ++i) {
+  for(int32_t i = 0; i < size; ++i) {
     STableIdInfo *id = taosArrayGet(pTableIdList, i);
 
     STable* pTable = tsdbGetTableByUid(tsdbGetMeta(tsdb), id->uid);
@@ -2665,8 +2664,12 @@ int32_t tsdbGetTableGroupFromIdList(TSDB_REPO_T* tsdb, SArray* pTableIdList, STa
     return terrno;
   }
 
-  pGroupInfo->numOfTables = i;
-  taosArrayPush(pGroupInfo->pGroupList, &group);
+  pGroupInfo->numOfTables = taosArrayGetSize(group);
+  if (pGroupInfo->numOfTables > 0) {
+    taosArrayPush(pGroupInfo->pGroupList, &group);
+  } else {
+    taosArrayDestroy(group);
+  }
 
   return TSDB_CODE_SUCCESS;
 }
-- 
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