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HomeDatabaseMysql Tutorialmysql limit 分页的用法与注意事项

在我们使用查询语句的时候,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,mysql已经为我们提供了这样一个功能。

<code class="language-sql">SELECT * FROM table  LIMIT [offset,] rows | rows OFFSET offset </code>

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):为与PostgreSQL兼容,MySQL 也支持句 法: LIMIT # OFFSET #。  

<code class="language-sql">mysql> SELECT * FROM table LIMIT 5,10;  // 检索记录行 6-15 </code>

 

//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:  

<code class="language-sql">mysql> SELECT * FROM table LIMIT 95,-1; // 检索记录行 96-last. </code>


//如果只给定一个参数,它表示返回最大的记录行数目:

<code class="language-sql">mysql> SELECT * FROM table LIMIT 5;     //检索前 5 个记录行</code>

//换句话说,LIMIT n 等价于 LIMIT 0,n。

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