error implicit convertion between varchar and timestamp when join

[sylzd]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

create table tt1 (ts timestamp);
create table tt2 (ts varchar(32));
insert into tt1 values ("2001-01-01 00:00:00");
insert into tt2 values ("2001-01-01 00:00:00");
select * from tt1 where ts in (select ts from tt2);

2. What did you expect to see? (Required)

+---------------------+
| ts                  |
+---------------------+
| 2001-01-01 00:00:00 |
+---------------------+
1 row in set (0.01 sec)

3. What did you see instead (Required)

Empty set (0.00 sec)

4. What is your TiDB version? (Required)

5.10 release version & v5.1.0-alpha-372-g4e61eb149-dirty

[sylzd]

/assign

[sylzd]

This bug produced in production environment!!! Tag severity/major should be added.

[ti-srebot]

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