move test to explaintest

cmd/explaintest/r/explain.result

@@ -56,3 +56,20 @@ create view v as select cast(replace(substring_index(substring_index("",',',1),'
 desc v;
 Field	Type	Null	Key	Default	Extra
 event_id	varchar(32)	NO		NULL	
+drop table if exists t1, t2;
+create table t1 (c_int int, c_decimal decimal(12, 6), primary key (c_int) nonclustered,key((c_int + 1))) ;
+create table t2 like t1;
+explain format = 'brief' select /*+ agg_to_cop() */ * from t1 where c_decimal in (select c_decimal from t2 where t2.c_int + 1 = 8 + 1);
+id	estRows	task	access object	operator info
+HashJoin	9.99	root		inner join, equal:[eq(test.t2.c_decimal, test.t1.c_decimal)]
+├─HashAgg(Build)	7.99	root		group by:test.t2.c_decimal, funcs:firstrow(test.t2.c_decimal)->test.t2.c_decimal
+│ └─IndexLookUp	7.99	root		
+│   ├─IndexRangeScan(Build)	10.00	cop[tikv]	table:t2, index:expression_index(`c_int` + 1)	range:[9,9], keep order:false, stats:pseudo
+│   └─HashAgg(Probe)	7.99	cop[tikv]		group by:test.t2.c_decimal, 
+│     └─Selection	9.99	cop[tikv]		not(isnull(test.t2.c_decimal))
+│       └─TableRowIDScan	10.00	cop[tikv]	table:t2	keep order:false, stats:pseudo
+└─TableReader(Probe)	9990.00	root		data:Selection
+  └─Selection	9990.00	cop[tikv]		not(isnull(test.t1.c_decimal))
+    └─TableFullScan	10000.00	cop[tikv]	table:t1	keep order:false, stats:pseudo
+drop table t1;
+drop table t2;

cmd/explaintest/t/explain.test

@@ -20,3 +20,11 @@ drop table t;
 drop view if exists v;
 create view v as select cast(replace(substring_index(substring_index("",',',1),':',-1),'"','') as CHAR(32)) as event_id;
 desc v;
+
+-- for issue 33237
+drop table if exists t1, t2;
+create table t1 (c_int int, c_decimal decimal(12, 6), primary key (c_int) nonclustered,key((c_int + 1))) ;
+create table t2 like t1;
+explain format = 'brief' select /*+ agg_to_cop() */ * from t1 where c_decimal in (select c_decimal from t2 where t2.c_int + 1 = 8 + 1);
+drop table t1;
+drop table t2;

planner/core/integration_test.go

@@ -6243,14 +6243,3 @@ func TestTiFlashPartitionTableScan(t *testing.T) {
 	tk.MustExec("drop table rp_t;")
 	tk.MustExec("drop table hp_t;")
 }
-
-func TestIssue33237(t *testing.T) {
-	store, clean := testkit.CreateMockStore(t)
-	defer clean()
-	tk := testkit.NewTestKit(t, store)
-	tk.MustExec("use test")
-	tk.MustExec("drop table if exists t1, t2;")
-	tk.MustExec("create table t1 (c_int int, c_decimal decimal(12, 6), primary key (c_int) nonclustered,key((c_int + 1))) ;")
-	tk.MustExec("create table t2 like t1;")
-	tk.MustExec("select * from t1 where c_decimal in (select c_decimal from t2 where t2.c_int + 1 = 8 + 1);")
-}