Merge pull request #21008 from taosdata/szhou/fix-ts3248

fix: when db_name!=xxx can not be used in systable scan index

source/libs/executor/src/sysscanoperator.c

@@ -1482,11 +1482,7 @@ static SSDataBlock* sysTableScanUserTables(SOperatorInfo* pOperator) {
           pInfo->pIdx->init = 1;
           SSDataBlock* blk = sysTableBuildUserTablesByUids(pOperator);
           return blk;
-        } else if (flt == -2) {
-          qDebug("%s failed to get sys table info by idx, empty result", GET_TASKID(pTaskInfo));
-          return NULL;
-        } else if (flt == -1) {
-          // not idx
+        } else if ((flt == -1) || (flt == -2)) {
           qDebug("%s failed to get sys table info by idx, scan sys table one by one", GET_TASKID(pTaskInfo));
         }
       } else if (pCondition != NULL && (pInfo->pIdx != NULL && pInfo->pIdx->init == 1)) {

tests/script/tsim/query/sys_tbname.sim

@@ -109,5 +109,26 @@ if $rows != 5000 then
         return -1
 endi
 
-
+sql create database d1;
+sql create stable d1.st1 (ts timestamp, f int) tags(t int);
+sql create stable d1.st2 (ts timestamp, f int) tags(t int);
+sql create table d1.ct1 using d1.st1 tags(1);
+sql create table d1.ct2 using d1.st2 tags(2);
+
+sql create database d2;
+sql create stable d2.st1(ts timestamp, f int) tags(t int);
+sql create stable d2.st2(ts timestamp, f int) tags(t int);
+sql create table d2.ct1 using d2.st1 tags(1);
+sql create table d2.ct2 using d2.st2 tags(2);
+
+sql create database d3;
+sql create stable d3.st1(ts timestamp, f int) tags(t int);
+sql create stable d3.st2(ts timestamp, f int) tags(t int);
+sql create table d3.ct1 using d3.st1 tags(1);
+sql create table d3.ct2 using d3.st2 tags(2);
+sql select count(*), stable_name, db_name from information_schema.ins_tables where db_name != 'd2' group by stable_name,db_name
+print $rows
+if $rows != 9 then
+  return -1
+endi
 #system sh/exec.sh -n dnode1 -s stop -x SIGINT