sync-diff-inspector can't find the different about datetime type.

[erwadba]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   If possible, provide a recipe for reproducing the error.

source
create table t(id int primary key,t datetime);
insert into t(id,t) values(1,'2022-02-23 11:22:00');
insert into t(id,t) values(2,'2022-02-23 11:22:00');
insert into t(id,t) values(3,'2022-02-23 11:22:00');
insert into t(id,t) values(4,'2022-02-23 11:22:00');

target
create table t(id int primary key,t datetime);
insert into t(id,t) values(1,'2022-02-23 11:32:00');
insert into t(id,t) values(2,'2022-02-23 11:32:00');
insert into t(id,t) values(3,'2022-02-23 11:32:00');
insert into t(id,t) values(4,'2022-02-23 11:32:00');

2. What did you expect to see?
   report not equal

3. What did you see instead?
   all are equal

4. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?
   v6.5.0

5. which tool are you using?
   sync-diff-inspector

6. what versionof tool are you using (pump -V or tidb-lightning -V or syncer -V)?

[erwadba]

It's Hash Collisions about CRC32 Function.