Merge pull request #9090 from taosdata/szhou/hotfix/td-11943

TD-11943: fix bug core dump related to select tbname, max(col)+val from childtable

src/client/src/tscUtil.c

@@ -4928,7 +4928,11 @@ int32_t createProjectionExpr(SQueryInfo* pQueryInfo, STableMetaInfo* pTableMetaI
         }
       }
 
-      pse->colInfo.flag = pSource->base.colInfo.flag; //TSDB_COL_NORMAL;
+      if (!pQueryInfo->stableQuery && TSDB_COL_IS_TAG(pSource->base.colInfo.flag)) {
+        pse->colInfo.flag = (pSource->base.colInfo.flag) & (~TSDB_COL_TAG);
+      } else {
+        pse->colInfo.flag = pSource->base.colInfo.flag;
+      }
       pse->resType  = pSource->base.resType;
       pse->resBytes = pSource->base.resBytes;
       strncpy(pse->colInfo.name, pSource->base.aliasName, tListLen(pse->colInfo.name));

tests/script/general/parser/select_with_tags.sim

@@ -956,4 +956,39 @@ sql_error select first(c1), count(*), t2, t1, tbname from select_tags_mt0 group
 #sql select count(c1) from select_tags_mt0 where c1=99 group by tbname;
 #sql select count(*),tbname from select_tags_mt0 group by tbname
 
+print ==================================> TD-11943
+sql create database test11943;
+sql use test11943;
+sql create stable st (ts timestamp , id int ) tags (ind int );
+sql insert into sub1 using st tags(1) values(now ,1);
+sql insert into sub1 using st tags(1) values(now ,2);
+sql insert into sub2 using st tags(2) values(now ,3);
+sql insert into sub2 using st tags(2) values(now ,4);
+sql select tbname ,max(id)+5 from sub1;
+if $data00 != @sub1@ then
+  return -1
+endi
+if $data01 != @7.000000000@ then
+  return -1
+endi
+sql select ind, max(id)+5 from st group by tbname
+if $data00 != @1@ then
+  return -1
+endi
+if $data01 != @7.000000000@ then
+  return -1
+endi
+if $data02 != @sub1@ then
+  return -1
+endi
+if $data10 != @2@ then
+  return -1
+endi
+if $data11 != @9.000000000@ then
+  return -1
+endi
+if $data12 != @sub2@ then
+  return -1
+endi
+sql drop database test11943
 system sh/exec.sh -n dnode1 -s stop -x SIGINT