fix a bug that values of time(1),time(3),time(5) will generate 00:00:00

[dev-GGBond]

select case语法错误,造成time字段精度time(1),time(3),time(5)值为00:00:00

[lance6716]

Hi, could you add a test case for this PR?

[lance6716]

I tested this PR manualy

MySQL [test]> create table t (c time(5));
Query OK, 0 rows affected (0.086 sec)

MySQL [test]> insert into t values('12:34:56.12345');
Query OK, 1 row affected (0.009 sec)

=== WriteRowsEventV2 ===
Date: 2021-06-22 11:29:41
Log position: 3376
Event size: 42
TableID: 12993
Flags: 1
Column count: 1
Values:
--
0:"12:34:56.123450"

before this PR, it's 00:00:00

Will change the PR description to English and merge it later.

cc @atercattus