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select into outfile time1 year(4) default '2030', Inconsistent data 「tidb 4.0.9 vs mysql 5.7」 #22159

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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

create table tm1(time1 year(4) default '2030');

insert into tm1 values(2010);
insert into tm1 values(2011);
insert into tm1 values(2012);

select * from tm1;
+-------+
| time1 |
+-------+
|  2010 |
|  2011 |
|  2012 |
+-------+
3 rows in set (0.00 sec)

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

MySQL

MySQL [test]> select * from tm1 into outfile '/var/lib/mysql-files/tm1' fields terminated by ',' optionally enclosed by '=' lines terminated by '\n';
Query OK, 3 rows affected (0.00 sec)

[root@101 mysql-files]# cat tm1 
2010
2011
2012
[root@101 mysql-files]#

3. What did you see instead (Required)

TiDB

MySQL [out]> select * from tm1 into outfile '/opt/t100/tm1' fields terminated by ',' optionally enclosed by '"' lines terminated by '\n';
Query OK, 0 rows affected (0.00 sec)

// Print three line space
[root@101 t100]# cat tm1 



[root@101 t100]# 

4. What is your TiDB version? (Required)

TiDB 4.0.9

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