Merge pull request #20989 from taosdata/szhou/fix-ts3243

fix: do not performace table count scan optimized where there are no agg functions

source/libs/planner/src/planOptimizer.c

@@ -2526,7 +2526,7 @@ static bool tbCntScanOptIsEligibleAggFuncs(SNodeList* pAggFuncs) {
       return false;
     }
   }
-  return true;
+  return LIST_LENGTH(pAggFuncs) > 0;
 }
 
 static bool tbCntScanOptIsEligibleAgg(SAggLogicNode* pAgg) {

tests/script/tsim/query/tableCount.sim

@@ -104,4 +104,9 @@ if $data62 != 5 then
   return -1
 endi
 
+sql select distinct db_name from information_schema.ins_tables;
+print $rows
+if $rows != 4 then
+  return -1
+endi
 system sh/exec.sh -n dnode1 -s stop -x SIGINT