diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 6cd06c401cd8e93ff7a1c83384c87271136d5c0c..5d748528acacc09b3dafcb700a34a78b0c35cb12 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -6157,7 +6157,7 @@ int32_t doCheckForCreateFromStable(SSqlObj* pSql, SSqlInfo* pInfo) {
   STableMetaInfo* pStableMetaInfo = tscGetMetaInfo(pQueryInfo, STABLE_INDEX);
 
   // super table name, create table by using dst
-  int32_t numOfTables = taosArrayGetSize(pCreateTable->childTableInfo);
+  int32_t numOfTables = (int32_t) taosArrayGetSize(pCreateTable->childTableInfo);
   for(int32_t j = 0; j < numOfTables; ++j) {
     SCreatedTableInfo* pCreateTableInfo = taosArrayGet(pCreateTable->childTableInfo, j);