diff --git a/tests/fullstack-test-dt/expr/compare_null.test b/tests/fullstack-test-dt/expr/compare_null.test
index 43523fdf1d5..e70194bae57 100644
--- a/tests/fullstack-test-dt/expr/compare_null.test
+++ b/tests/fullstack-test-dt/expr/compare_null.test
@@ -1,4 +1,4 @@
-# Copyright 2023 PingCAP, Inc.
+# Copyright 2024 PingCAP, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,7 +17,7 @@ mysql> drop table if exists test.t;
 
 mysql> create table test.t (a date);
 
-mysql> insert into test.t values("2024-08-26"),("2024-08-25"),("2024-08-24"),("2024-08-23");
+mysql> insert into test.t values('2024-08-26'),('2024-08-25'),('2024-08-24'),('2024-08-23');
 
 mysql> alter table test.t set tiflash replica 1;
 
@@ -38,24 +38,24 @@ mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t w
 
 mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL);
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, '2024-08-26');
 +------------+
 | a          |
 +------------+
 | 2024-08-26 |
 +------------+
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, '2024-08-26');
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, "2024-09-01");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, '2024-09-01');
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, "2024-09-01");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, '2024-09-01');
 
 mysql> drop table if exists test.t;
 
 mysql> create table test.t (a date);
 
-mysql> insert into test.t values("2024-08-26"),("2024-08-26"),("2024-08-26"),("2024-08-26");
+mysql> insert into test.t values('2024-08-26'),('2024-08-26'),('2024-08-26'),('2024-08-26');
 
 mysql> alter table test.t set tiflash replica 1;
 
@@ -63,7 +63,7 @@ func> wait_table test t
 
 mysql> alter table test.t compact tiflash replica;
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, '2024-08-26');
 +------------+
 | a          |
 +------------+
@@ -73,7 +73,7 @@ mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t w
 | 2024-08-26 |
 +------------+
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, '2024-08-26');
 
 # not null
 
@@ -81,7 +81,7 @@ mysql> drop table if exists test.t;
 
 mysql> create table test.t (a date not null);
 
-mysql> insert into test.t values("2024-08-26"),("2024-08-25"),("2024-08-24"),("2024-08-23");
+mysql> insert into test.t values('2024-08-26'),('2024-08-25'),('2024-08-24'),('2024-08-23');
 
 mysql> alter table test.t set tiflash replica 1;
 
@@ -102,24 +102,24 @@ mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t w
 
 mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL);
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, '2024-08-26');
 +------------+
 | a          |
 +------------+
 | 2024-08-26 |
 +------------+
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, '2024-08-26');
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, "2024-09-01");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, '2024-09-01');
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, "2024-09-01");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, '2024-09-01');
 
 mysql> drop table if exists test.t;
 
 mysql> create table test.t (a date not null);
 
-mysql> insert into test.t values("2024-08-26"),("2024-08-26"),("2024-08-26"),("2024-08-26");
+mysql> insert into test.t values('2024-08-26'),('2024-08-26'),('2024-08-26'),('2024-08-26');
 
 mysql> alter table test.t set tiflash replica 1;
 
@@ -127,7 +127,7 @@ func> wait_table test t
 
 mysql> alter table test.t compact tiflash replica;
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, "2024-08-26");
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a in (NULL, '2024-08-26');
 +------------+
 | a          |
 +------------+
@@ -137,4 +137,4 @@ mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t w
 | 2024-08-26 |
 +------------+
 
-mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, "2024-08-26");
\ No newline at end of file
+mysql> set session tidb_isolation_read_engines='tiflash'; select * from test.t where a not in (NULL, '2024-08-26');