不带标识符对 MySQL 结果排序?


若要对不带标识符的 MySQL 结果进行排序,语法如下 −

select * from yourTableName order by 1 DESC LIMIT yourLimitValue;

首先创建一张表 −

mysql> create table DemoTable1325
   -> (
   -> Id int,
   -> Name varchar(20)
   -> );
Query OK, 0 rows affected (0.69 sec)

使用插入命令在表中插入一些记录 −

mysql> insert into DemoTable1325 values(100,'Chris');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable1325 values(101,'Bob');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable1325 values(120,'David');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable1325 values(115,'Sam');
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable1325 values(130,'Carol');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable1325 values(150,'Mike');
Query OK, 1 row affected (0.15 sec)

使用选择语句显示表中的所有记录 −

mysql> select * from DemoTable1325;

将产生以下输出 −

+------+-------+
|  Id  | Name  |
+------+-------+
|  100 | Chris |
|  101 | Bob   |
|  120 | David |
|  115 | Sam   |
|  130 | Carol |
|  150 | Mike  |
+------+-------+
6 rows in set (0.00 sec)

以下是对不带标识符的 MySQL 结果进行排序的查询 −

mysql> select * from DemoTable1325 order by 1 DESC LIMIT 4;

将产生以下输出

+------+-------+
| Id   | Name  |
+------+-------+
| 150  | Mike  |
| 130  | Carol |
| 120  | David |
| 115  | Sam   |
+------+-------+
4 rows in set (0.00 sec)

更新于:2019-11-05

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