在 MySQL 中查找第 N 个最大值的查询
mysqlmysqli database更新于 2023/11/5 13:12:00
首先我们创建一个表 −
mysql> create table DemoTable -> ( -> Value int -> ); Query OK, 0 rows affected (0.59 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable values(60); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(45); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(85); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(78); Query OK, 1 row affected (0.10 sec)
使用 select 语句显示表中的所有记录 −
mysql> select * from DemoTable;
这将产生以下输出 −
+-------+ | Value | +-------+ | 40 | | 60 | | 45 | | 85 | | 78 | +-------+ 5 rows in set (0.00 sec)
以下是在 MySQL 中查找第 N 个最大值的查询−
mysql> select * from DemoTable order by Value desc limit 2,1;
这将产生以下输出 −
+-------+ | Value | +-------+ | 60 | +-------+ 1 row in set (0.00 sec)
