如何在 MySQL 中选择最后两行?


要选择最后两行,请使用 ORDER BY DESC LIMIT 2。

首先,让我们创建一个表格 -

mysql> create table DemoTable763 (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   FirstName varchar(100)
);
Query OK, 0 rows affected (0.57 sec)

使用 insert 命令在表中插入一些记录 -

mysql> insert into DemoTable763(FirstName) values('John');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable763(FirstName) values('Sam');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable763(FirstName) values('Carol');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable763(FirstName) values('David');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable763(FirstName) values('Bob');
Query OK, 1 row affected (0.13 sec)

使用 select 语句显示表中的所有记录 -

mysql> select *from DemoTable763;

这将产生以下输出 -

+----+-----------+
| Id | FirstName |
+----+-----------+
|  1 | John      |
|  2 | Sam       |
|  3 | Carol     |
|  4 | David     |
|  5 | Bob       |
+----+-----------+
5 rows in set (0.00 sec)

以下是 MySQL 中选择最后两行的查询 -

mysql> select *from DemoTable763 order by Id DESC LIMIT 2;

这将产生以下输出 -

+----+-----------+
| Id | FirstName |
+----+-----------+
|  5 | Bob       |
|  4 | David     |
+----+-----------+
2 rows in set (0.00 sec)

更新日期: 03-Sep-2019

7K+ 浏览

开启您的 职业生涯

完成课程即可获得认证

开始
广告