fix

Signed-off-by: wjhuang2016 <huangwenjun1997@gmail.com>

planner/core/integration_test.go

@@ -4907,6 +4907,6 @@ func (s *testIntegrationSerialSuite) TestIssue30271(c *C) {
 	tk.MustExec("create table t(a char(10), b char(10), c char(10), index (a, b, c)) collate utf8mb4_bin;")
 	tk.MustExec("insert into t values ('b', 'a', '1'), ('b', 'A', '2'), ('c', 'a', '3');")
 	tk.MustExec("set names utf8mb4 collate utf8mb4_general_ci;")
-	tk.MustQuery("select * from t where (a>'a' and b='a') or (b = 'A' and a < 'd') order by a,c;").Check(testkit.Rows("b a 1", "b, A 2", "c a 3"))
+	tk.MustQuery("select * from t where (a>'a' and b='a') or (b = 'A' and a < 'd') order by a,c;").Check(testkit.Rows("b a 1", "b A 2", "c a 3"))
 
 }