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MySQL ORDER BY具有自定义字段值

2024-04-23 21:29:03 398

要设置自定义字段值，请使用FIND_IN_SET()。让我们首先创建一个表-

mysql> create table DemoTable677(
   UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   UserStatus text
);

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable677(UserStatus) values('BUSY');
mysql> insert into DemoTable677(UserStatus) values('AT WORK');
mysql> insert into DemoTable677(UserStatus) values('OFFLINE');
mysql> insert into DemoTable677(UserStatus) values('BLOCKED');

使用select语句显示表中的所有记录-

mysql> select *from DemoTable677;

这将产生以下输出-

+--------+------------+
| UserId | UserStatus |
+--------+------------+
|      1 | BUSY       |
|      2 | AT WORK    |
|      3 | OFFLINE    |
|      4 | BLOCKED    |
+--------+------------+
4 rows in set (0.00 sec)

以下是使用自定义字段值对ORDERBY的查询-

mysql> select *from DemoTable677 ORDER BY FIND_IN_SET(UserStatus, 'BLOCKED,AT WORK,OFFLINE,BUSY');

这将产生以下输出-

+--------+------------+
| UserId | UserStatus |
+--------+------------+
|      4 | BLOCKED    |
|      2 | AT WORK    |
|      3 | OFFLINE    |
|      1 | BUSY       |
+--------+------------+
4 rows in set (0.03 sec)

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MySQL ORDER BY具有自定义字段值

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