mysql 获取最新若干条记录的sql语句

获取最新10条记录的sql语句如下： select * fromsome_table order by id desc limit 0,10 SELECT*FROMtableLIMIT[offset,]rows|rowsOFFSEToffset LIMIT 子句可以被用于强制 SELECT 语句返回指定的记录数。MySQL LIMIT 接受一个或两个数字参数。参数必须是一

获取最新10条记录的sql语句如下：

select * from some_table order by id desc limit 0,10

 

<ol><li><span><span>SELECT * FROM table LIMIT [offset,] rows | rows OFFSET offset </span></span></li></ol>

LIMIT 子句可以被用于强制 SELECT 语句返回指定的记录数。MySQL 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 #。

<ol><li>MySQL<span><span>></span><span> SELECT * FROM table LIMIT 5,10;  </span></span>
</li></ol>

检索记录行 6-15

为了检索从某一个偏移量到记录集的结束所有的记录行，可以指定第二个参数为 -1：

<ol><li>MySQL<span><span>></span><span> SELECT * FROM table LIMIT 95,-1;   </span></span>
</li></ol>

检索记录行 96-last.

如果只给定一个参数，它表示返回最大的记录行数目：

<ol><li>MySQL<span><span>></span><span> SELECT * FROM table LIMIT 5;  </span></span>
</li></ol>

检索前 5 个记录行。换句话说，LIMIT n 等价于 MySQL LIMIT 0,n。

实例如下：

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)