时间:2021-07-01 10:21:17 帮助过:19人阅读
这里的10,表示什么意思
本身没有意义,只有与zerofill配合在一起,才会起作用
mysql> create table c( a int(3) zerofill,b int(3) zerofill);
Query OK, 0 rows affected (0.16 sec)
mysql> insert into c select 1,2;
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
mysql> select * from c;
+------+------+
| a | b |
+------+------+
| 001 | 002 |
+------+------+
1 row in set (0.00 sec)
mysql> select a-b from c;
ERROR 1690 (22003): BIGINT UNSIGNED value is out of range in ‘(`testDB`.`c`.`a` - `testDB`.`c`.`b`)‘
mysql> insert into c select 1111;
ERROR 1136 (21S01): Column count doesn‘t match value count at row 1 (列计数不匹配值计数)
MySQL数据类型
标签:分享 null inno ble fill sele from warnings mysql数据类型