diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 66ec044cc03bec6d661e8deb8698dd5dfec8ed2e..0fa23ddcb864f975ee401f5641ce934334025beb 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -6387,6 +6387,7 @@ static bool doEveryInterpolation(SOperatorInfo* pOperatorInfo, SSDataBlock* pBlo
   for (int32_t i = 1; i < pOperatorInfo->numOfOutput; ++i) {
     assert(pEveryInfo->binfo.pCtx[i].functionId == TSDB_FUNC_INTERP 
         || pEveryInfo->binfo.pCtx[i].functionId == TSDB_FUNC_TS_DUMMY
+        || pEveryInfo->binfo.pCtx[i].functionId == TSDB_FUNC_TAG
         || pEveryInfo->binfo.pCtx[i].functionId == TSDB_FUNC_TAG_DUMMY);
 
     if (pEveryInfo->binfo.pCtx[i].functionId == TSDB_FUNC_INTERP) {