diff --git a/src/client/src/tscAsync.c b/src/client/src/tscAsync.c
index f39169c193d3483e4db6a35aa42f5187ef1bf723..91ac7a2f3ace7f08bafb5d4620e65f59f0b89480 100644
--- a/src/client/src/tscAsync.c
+++ b/src/client/src/tscAsync.c
@@ -168,6 +168,9 @@ static void tscProcessAsyncRetrieveImpl(void *param, TAOS_RES *tres, int numOfRo
     } else {
       pRes->code = numOfRows;
     }
+    if (pRes->code == TSDB_CODE_SUCCESS) {
+      pRes->code = TSDB_CODE_TSC_INVALID_QHANDLE;           
+    }
 
     tscAsyncResultOnError(pSql);
     return;
diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index f5d9a6a17e1cf6784355d7e7b6f198dcc1fb9248..edb673d1670ca758f087ab9f83dec7d780531b6b 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -1757,6 +1757,7 @@ static void parseFileSendDataBlock(void *param, TAOS_RES *tres, int32_t numOfRow
       pSql->res.numOfRows = 0;
       code = doPackSendDataBlock(pSql, pInsertParam, pTableMeta, count, pTableDataBlock);
       if (code != TSDB_CODE_SUCCESS) {
+        pParentSql->res.code = code;
         goto _error;
       }
 
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 14dfee905e1231739b29c4965091e3cd0910fc08..f352683e433a8e304f9e8e15f353d7334c7f1ca2 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -422,7 +422,6 @@ int32_t readFromFile(char *name, uint32_t *len, void **buf) {
     return TSDB_CODE_TSC_APP_ERROR;
   }
   close(fd);
-  tfree(*buf);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index efdc644f2c8637a48b78f122ab847603609dd3f8..ca55bce82aa7916057a9b8a0ecd1e40734392962 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -2265,7 +2265,7 @@ void tscFirstRoundCallback(void* param, TAOS_RES* tres, int code) {
 
     destroySup(pSup);
     taos_free_result(pSql);
-    parent->res.code = code;
+    parent->res.code = c;
     tscAsyncResultOnError(parent);
     return;
   }