mysql> show variables like 'auto%';
+--------------------------+-------+
| Variable_name | Value |
+--------------------------+-------+
| auto_increment_increment | 1 |
| auto_increment_offset | 1 |
| autocommit | ON |
| automatic_sp_privileges | ON |
+--------------------------+-------+
4 rows in set (0.00 sec)
其中auto_increment_offset控制起點，auto_increment_increment控制步長
