如何使用MySQL按升序选择表的最后三行？

要按升序选择最后三行，请像下面的语法一样使用 ORDER BY DESC LIMIT-

select * from
(select * from yourTableName order by yourColumnName desc limit 3) anyAliasName
order by yourColumnName ;

让我们首先创造一个表-

mysql> create table DemoTable1579
   -> (
   -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> Name varchar(20)
   -> );
Query OK, 0 rows affected (0.67 sec)

使用插入命令将一些记录插入表中-

mysql> insert into DemoTable1579(Name) values('Robert');
Query OK, 1 row affected (0.37 sec)
mysql> insert into DemoTable1579(Name) values('Bob');
Query OK, 1 row affected (0.48 sec)
mysql> insert into DemoTable1579(Name) values('Chris');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable1579(Name) values('Sam');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable1579(Name) values('Mike');
Query OK, 1 row affected (0.09 sec)

使用 SELECT 语句从表中显示所有记录-

mysql> select * from DemoTable1579;

这将产生下面的输出-

+----+--------+
| Id | Name   |
+----+--------+
|  1 | Robert |
|  2 | Bob    |
|  3 | Chris  |
|  4 | Sam    |
|  5 | Mike   |
+----+--------+
5 rows in set (0.00 sec)

以下是按升序选择表的最后三行的查询-

mysql> select * from
   -> (select * from DemoTable1579 order by Id desc limit 3) t
   -> order by Id;

这将产生下面的输出-

+----+-------+
| Id | Name  |
+----+-------+
|  3 | Chris |
|  4 | Sam   |
|  5 | Mike  |
+----+-------+
3 rows in set (0.00 sec)

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