diff --git a/source/dnode/vnode/src/tsdb/tsdbRead2.c b/source/dnode/vnode/src/tsdb/tsdbRead2.c
index 0034eefa0546b2c74bf48be696fd88ef875a2acf..62d8e38666a24db04458fc12e7dd192e590aace7 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead2.c
@@ -5818,6 +5818,7 @@ void tsdbUntakeReadSnap2(STsdbReader* pReader, STsdbReadSnap* pSnap, bool proact
 void tsdbReaderSetId2(STsdbReader* pReader, const char* idstr) {
   taosMemoryFreeClear(pReader->idStr);
   pReader->idStr = taosStrdup(idstr);
+  pReader->status.fileIter.pLastBlockReader->mergeTree.idStr = pReader->idStr;
 }
 
 void tsdbReaderSetCloseFlag2(STsdbReader* pReader) { pReader->code = TSDB_CODE_TSC_QUERY_CANCELLED; }