feat: support batch loading of csv files

source/client/src/clientImpl.c

@@ -922,7 +922,7 @@ void schedulerExecCb(SExecResult* pResult, void* param, int32_t code) {
     pRequest->code = code1;
   }
 
-  if (pRequest->code == TSDB_CODE_SUCCESS && pWrapper->pParseCtx->needMultiParse) {
+  if (pRequest->code == TSDB_CODE_SUCCESS && NULL != pWrapper->pParseCtx && pWrapper->pParseCtx->needMultiParse) {
     code = continueInsertFromCsv(pWrapper, pRequest);
     if (TSDB_CODE_SUCCESS == code) {
       return;

source/libs/parser/src/parser.c

@@ -215,6 +215,10 @@ int32_t qAnalyseSqlSemantic(SParseContext* pCxt, const struct SCatalogReq* pCata
 }
 
 void qDestroyParseContext(SParseContext* pCxt) {
+  if (NULL == pCxt) {
+    return;
+  }
+
   taosArrayDestroy(pCxt->pTableMetaPos);
   taosArrayDestroy(pCxt->pTableVgroupPos);
   taosMemoryFree(pCxt);