diff --git a/source/libs/parser/src/parCalcConst.c b/source/libs/parser/src/parCalcConst.c
index 23ce3aa77d..0657f1a43d 100644
--- a/source/libs/parser/src/parCalcConst.c
+++ b/source/libs/parser/src/parCalcConst.c
@@ -285,7 +285,7 @@ static SNode* createConstantValue() {
 static int32_t calcConstProjections(SCalcConstContext* pCxt, SSelectStmt* pSelect, bool subquery) {
   SNode* pProj = NULL;
   WHERE_EACH(pProj, pSelect->pProjectionList) {
-    if (subquery && !pSelect->isDistinct && isUselessCol((SExprNode*)pProj)) {
+    if (subquery && !pSelect->isDistinct && !pSelect->tagScan && isUselessCol((SExprNode*)pProj)) {
       ERASE_NODE(pSelect->pProjectionList);
       continue;
     }
diff --git a/tests/script/tsim/query/tag_scan.sim b/tests/script/tsim/query/tag_scan.sim
index 3f0a23fbd6..7404bd37fe 100644
--- a/tests/script/tsim/query/tag_scan.sim
+++ b/tests/script/tsim/query/tag_scan.sim
@@ -140,4 +140,28 @@ if $data01 != @1aa@ then
   return -1
 endi
 
+sql create table stb34 (ts timestamp, f int) tags(t int);
+sql insert into ctb34 using stb34 tags(1) values(now, 1)(now+1s, 2);
+sql select 1 from (select tags t from stb34 order by t)
+print $rows
+if $rows != 1 then
+  return -1
+endi
+
+sql select count(*) from (select tags t from stb34)
+if $data00 != 1 then
+  return -1
+endi
+
+
+sql select 1 from (select tags ts from stb34)
+print $rows
+if $rows != 2 then
+  return -1
+endi
+
+sql select count(*) from (select tags ts from stb34)
+if $data00 != 2 then
+  return -1
+endi
 system sh/exec.sh -n dnode1 -s stop -x SIGINT