MYSQL---多表删除

删除前的person表（删除name值相同的记录，保留id最小的记录）

+----+-------+------+------+
| id | name | job | age |
+----+-------+------+------+
| 1 | Mike | 18   |   30 |
| 2 | Tom   | 16   |   25 |
| 3 | Rose | 16   |   23 |
| 4 | James | 16   |   38 |
| 5 | Alex | 16   |   48 |
| 6 | Lin   | 18   |   26 |
| 7 | Yao   | 18   |   35 |
| 8 | Zhang | 17   |   35 |
| 9 | Wang | 17   |   45 |
| 10 | Li    | 17   |   25 |
| 11 | Cury | NULL |   30 |
| 12 | Tom   | 16   |   21 |
| 13 | Tom   | 18   |   29 |
| 14 | Mike | 17   |   19 |
+----+-------+------+------+

mysql> DELETE t1 FROM person AS t1 LEFT JOIN (SELECT * FROM person GROUP BY name
HAVING COUNT(name)>=2) AS t2 ON t1.name=t2.name WHERE t1.id>t2.id;
Query OK, 3 rows affected (0.20 sec)

删除后的person表：