MySQL 查询中的 LIMIT 关键字有什么用?
mysqlmysqli database
MySQL 中的 LIMIT 关键字可以指定输出中要返回的记录数。LIMIT 子句限制要返回的行数。可以借助以下示例来理解 −
示例
mysql> Select * from Student_info; +------+---------+------------+------------+ | id | Name | Address | Subject | +------+---------+------------+------------+ | 101 | YashPal | Amritsar | History | | 105 | Gaurav | Chandigarh | Literature | | 125 | Raman | Shimla | Computers | | 130 | Ram | Jhansi | Computers | | 132 | Shyam | Chandigarh | Economics | | 133 | Mohan | Delhi | Computers | | 150 | Saurabh | NULL | Literature | +------+---------+------------+------------+ 7 rows in set (0.00 sec)
上面的结果集显示表"student_info"共有 7 行。
但是，如果我们只想获取输出中的前 2 行，那么我们可以使用 LIMIT 关键字，后跟 2，如下所示 −
mysql> Select * from Student_info LIMIT 2; +------+---------+------------+------------+ | id | Name | Address | Subject | +------+---------+------------+------------+ | 101 | YashPal | Amritsar | History | | 105 | Gaurav | Chandigarh | Literature | +------+---------+------------+------------+ 2 rows in set (0.00 sec)
