planner: fix privilege on the CTE

Signed-off-by: Weizhen Wang <wangweizhen@pingcap.com>

pkg/planner/core/issuetest/planner_issue_test.go

@@ -119,3 +119,32 @@ func TestIssue54535(t *testing.T) {
 	tk.MustQuery("select /*+ inl_join(tmp) */ * from t1 inner join (select col_1, group_concat(col_2) from t2 group by col_1) tmp on t1.col_1 = tmp.col_1;").Check(testkit.Rows())
 	tk.MustQuery("select /*+ inl_join(tmp) */ * from t1 inner join (select col_1, group_concat(distinct col_2 order by col_2) from t2 group by col_1) tmp on t1.col_1 = tmp.col_1;").Check(testkit.Rows())
 }
+
+func TestIssue(t *testing.T) {
+	store := testkit.CreateMockStore(t)
+	tk := testkit.NewTestKit(t, store)
+	tk.MustExec("use test")
+	tk.MustExec("CREATE USER 'db_a'@'%';")
+	tk.MustExec("CREATE USER 'db_b'@'%';")
+	tk.MustExec("GRANT ALL PRIVILEGES ON `db_a`.* TO 'db_a'@'%';")
+	tk.MustExec("GRANT ALL PRIVILEGES ON `db_b`.* TO 'db_a'@'%';")
+	tk.MustExec("GRANT ALL PRIVILEGES ON `db_b`.* TO 'db_b'@'%';")
+	tk.MustExec("GRANT ALL PRIVILEGES ON `db_b`.* TO 'db_b'@'%';")
+	tk.MustExec("create database db_a;")
+	tk.MustExec("create database db_b;")
+	tk.MustExec("use db_a;")
+	tk.MustExec(`CREATE TABLE tmp_table1 (
+   id decimal(18,0) NOT NULL,
+   row_1 varchar(255) DEFAULT NULL,
+   PRIMARY KEY (id) /*T![clustered_index] CLUSTERED */
+ ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin`)
+	tk.MustExec(`create ALGORITHM=UNDEFINED DEFINER=db_a@'%' SQL SECURITY DEFINER VIEW view_test_v1 as (
+                         with rs1 as(
+                            select otn.*
+                             from tmp_table1 otn
+                          )
+                        select ojt.* from rs1 ojt
+                        )`)
+	tk.MustExec("use db_b;")
+	tk.MustQuery("select * from db_a.view_test_v1;")
+}