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MySQL查询ORDER BY`user_id` IN(1,2,3)和`name`进行自定义排序

2024-04-29 19:32:03 474

要实现IN()自定义排序，请使用ORDERBYCASE。

让我们首先创建一个表-

mysql> create table DemoTable752 (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Name varchar(100)
);

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable752(Name) values('John');
mysql> insert into DemoTable752(Name) values('Carol');
mysql> insert into DemoTable752(Name) values('Bob');
mysql> insert into DemoTable752(Name) values('Mike');
mysql> insert into DemoTable752(Name) values('Sam');
mysql> insert into DemoTable752(Name) values('Adam');
mysql> insert into DemoTable752(Name) values('Chris');

使用select语句显示表中的所有记录-

mysql> select *from DemoTable752;

这将产生以下输出-

+----+-------+
| Id | Name  |
+----+-------+
|  1 | John  |
|  2 | Carol |
|  3 | Bob   |
|  4 | Mike  |
|  5 | Sam   |
|  6 | Adam  |
|  7 | Chris |
+----+-------+
7 rows in set (0.00 sec)

以下是使用自定义值排序的查询-

mysql> select *from DemoTable752
   order by
      case
         when Id IN (1,2,3) then 1
         else Id
   END,
Name;

这将产生以下输出-

+----+-------+
| Id | Name  |
+----+-------+
|  3 | Bob   |
|  2 | Carol |
|  1 | John  |
|  4 | Mike  |
|  5 | Sam   |
|  6 | Adam  |
|  7 | Chris |
+----+-------+
7 rows in set (0.00 sec)

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MySQL查询ORDER BY`user_id` IN(1,2,3)和`name`进行自定义排序

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