[td-225]fix bug found by the regression test.

src/client/src/tscAsync.c

@@ -346,7 +346,7 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
   if (pSql->pStream == NULL) {
     SQueryInfo *pQueryInfo = tscGetQueryInfo(pCmd);
 
-    if (TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_INSERT)) {
+    if (pQueryInfo != NULL && TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_INSERT)) {
       tscDebug("0x%" PRIx64 " continue parse sql after get table-meta", pSql->self);
 
       code = tsParseSql(pSql, false);
@@ -376,7 +376,6 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
     } else {
       if (pSql->retryReason != TSDB_CODE_SUCCESS) {
         tscDebug("0x%" PRIx64 " update cached table-meta, re-validate sql statement and send query again", pSql->self);
-        tscResetSqlCmd(pCmd, false);
         pSql->retryReason = TSDB_CODE_SUCCESS;
       } else {
         tscDebug("0x%" PRIx64 " cached table-meta, continue validate sql statement and send query", pSql->self);

src/client/src/tscServer.c

@@ -2241,6 +2241,10 @@ int tscProcessMultiTableMetaRsp(SSqlObj *pSql) {
     pMsg = buf;
   }
 
+  if (pParentCmd->pTableMetaMap == NULL) {
+    pParentCmd->pTableMetaMap = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
+  }
+
   for (int32_t i = 0; i < pMultiMeta->numOfTables; i++) {
     STableMetaMsg *pMetaMsg = (STableMetaMsg *)pMsg;
     int32_t code = tableMetaMsgConvert(pMetaMsg);