diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index 90490f07d8c60b0f92bd98f3f9e370d643ebd211..de63465e0cba438de73bd6e2d2c7139495370838 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -524,13 +524,7 @@ static void issueTSCompQuery(SSqlObj* pSql, SJoinSupporter* pSupporter, SSqlObj*
   tscProcessSql(pSql);
 }
 
-static bool checkForDuplicateTagVal(SQueryInfo* pQueryInfo, SJoinSupporter* p1, SSqlObj* pPSqlObj) {
-  STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
-
-  SSchema* pSchema = tscGetTableTagSchema(pTableMetaInfo->pTableMeta);// todo: tags mismatch, tags not completed
-  SColumn *pCol = taosArrayGetP(pTableMetaInfo->tagColList, 0);
-  SSchema *pColSchema = &pSchema[pCol->colIndex.columnIndex];
-
+static bool checkForDuplicateTagVal(SSchema* pColSchema, SJoinSupporter* p1, SSqlObj* pPSqlObj) {
   for(int32_t i = 1; i < p1->num; ++i) {
     STidTags* prev = (STidTags*) varDataVal(p1->pIdTagList + (i - 1) * p1->tagSize);
     STidTags* p = (STidTags*) varDataVal(p1->pIdTagList + i * p1->tagSize);
@@ -564,7 +558,7 @@ static int32_t getIntersectionOfTableTuple(SQueryInfo* pQueryInfo, SSqlObj* pPar
   *s1 = taosArrayInit(p1->num, p1->tagSize - sizeof(int16_t));
   *s2 = taosArrayInit(p2->num, p2->tagSize - sizeof(int16_t));
 
-  if (!(checkForDuplicateTagVal(pQueryInfo, p1, pParentSql) && checkForDuplicateTagVal(pQueryInfo, p2, pParentSql))) {
+  if (!(checkForDuplicateTagVal(pColSchema, p1, pParentSql) && checkForDuplicateTagVal(pColSchema, p2, pParentSql))) {
     return TSDB_CODE_QRY_DUP_JOIN_KEY;
   }