复制mysql>

 select * from a; +------+------+------+ 发器

| id | name | age | +------+------+------+ 

发器

| 1 | A1 | 10 | | 2 | A2 | 20 | +------+------+------+ 

发器mysql >

 select * from b; +------+------+------+ 

发器| rid | id | age | +------+------+------+ | 5 | 2 | 20 | +------+------+------+   1.2.3.4.5.

(责任编辑：IT科技)