用查询语句的时候，经常要返回前几条或者中间某几行数据，这个时候怎么办呢？不用担心，已 经为我们提供了这样一个功能。

LIMIT 子句可以被用于强制 SELECT 语句返回指定的记录数。LIMIT 接受一个或两个数字参数。参数必须是一个整数常量。如果给定两个参数，第一个参数指定第一个返回记录行的偏移量，第二个参数指定返回记录行的最大数目。初 始记录行的偏移量是 0(而不是 1)： 为了与 PostgreSQL 兼容，MySQL 也支持句法： LIMIT # OFFSET #。

实例：

mysql> use sppeivan;

Database changed

mysql> select * from employee; // 返回所有结果

+------------+------------+--------+-------------+

| username   | password   | gender | cellphone   |

+------------+------------+--------+-------------+

| ewrew      | erewr      | MAN    | 13618889076 |

| ewrwerw32r | 324324     | MAN    | 13618889076 |

| grrrrr     | r44343     | WOMAN | 13618889076 |

| pansong    | erewrwe    | MAN    | 13618889076 |

| ret43t43t | 43t43      | MAN    | 13618889076 |

| ret44t4    | r4tgr      | WOMAN | 13618889076 |

| tttt       | 4et        | WOMAN | 13618889076 |

| wr34r      | retre      | MAN    | 13618889076 |

| xxx     | safe       | MAN    | 13618889076 |

| hhh       | ewrwer     | MAN    | 13618889076 |

| hg       | 6574326543 | MAN    | 13618889076 |

| ps       | ewrwe      | MAN    | 13618889076 |

| zhu       | werew      | MAN    | 13618889076 |

+------------+------------+--------+-------------+

13 rows in set (0.01 sec)

mysql> select * from employee limit 3 7;

ERROR 1064 (42000): You have an error in your SQL syntax

corresponds to your MySQL server version for the right s

line 1

mysql> select * from employee limit 3, 7; // 返回4-11行

+-----------+----------+--------+-------------+

| username | password | gender | cellphone   |

+-----------+----------+--------+-------------+

| pansong   | erewrwe | MAN    | 13618889076 |

| ret43t43t | 43t43    | MAN    | 13618889076 |

| ret44t4   | r4tgr    | WOMAN | 13618889076 |

| tttt      | 4et      | WOMAN | 13618889076 |

| wr34r     | retre    | MAN    | 13618889076 |

| xxx     | safe     | MAN    | 13618889076 |

| hhh      | ewrwer   | MAN    | 13618889076 |

+-----------+----------+--------+-------------+

7 rows in set (0.00 sec)

mysql> select * from employee limit 3,-1; // 错误语法

ERROR 1064 (42000): You have an error in your SQL syntax

corresponds to your MySQL server version for the right s

t line 1

mysql> select * from employee limit 3,1; // 返回第4行

+----------+----------+--------+-------------+

| username | password | gender | cellphone   |

+----------+----------+--------+-------------+

| pansong | erewrwe | MAN    | 13618889076|

+----------+----------+--------+-------------+

1 row in set (0.00 sec)

mysql> select * from employee limit 3; // 返回前3行

+------------+----------+--------+-------------+

| username   | password | gender | cellphone   |

+------------+----------+--------+-------------+

| ewrew      | erewr    | MAN    | 13618889076 |

| ewrwerw32r | 324324   | MAN    | 13618889076 |

| grrrrr     | r44343   | WOMAN | 13618889076 |

+------------+----------+--------+-------------+

3 rows in set (0.00 sec)

mysql> select * from employee limit 10; // 返回前10行

+------------+----------+--------+-------------+

| username   | password | gender | cellphone   |

+------------+----------+--------+-------------+

| ewrew      | erewr    | MAN    | 13618889076 |

| ewrwerw32r | 324324   | MAN    | 13618889076 |

| grrrrr     | r44343   | WOMAN | 13618889076 |

| pansong    | erewrwe | MAN    | 13618889076 |

| ret43t43t | 43t43    | MAN    | 13618889076 |

| ret44t4    | r4tgr    | WOMAN | 13618889076 |

| tttt       | 4et      | WOMAN | 13618889076 |

| wr34r      | retre    | MAN    | 13618889076 |

| xxx     | safe     | MAN    | 13811588469 |

| hhh       | ewrwer   | MAN    | 13618889076 |

+------------+----------+--------+-------------+

10 rows in set (0.00 sec)

mysql> select * from employee limit 9,1; // 返回第10行

+----------+----------+--------+-------------+

| username | password | gender | cellphone   |

+----------+----------+--------+-------------+

| hhh     | ewrwer   | MAN    | 13816668468 |

+----------+----------+--------+-------------+

1 row in set (0.00 sec)