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首先在MySQL中指定字段值ORDER BY

2024-05-02 11:54:05 456

要先在MySQL中按特定字段值排序，请使用ORDERBYFIELD()。让我们首先创建一个表-

mysql> create table DemoTable849(Color varchar(100));

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable849 values('RED');
mysql> insert into DemoTable849 values('ORANGE');
mysql> insert into DemoTable849 values('BLUE');
mysql> insert into DemoTable849 values('GREEN');

使用select语句显示表中的所有记录-

mysql> select *from DemoTable849;

这将产生以下输出-

+--------+
| Color  |
+--------+
| RED    |
| ORANGE |
| BLUE   |
| GREEN  |
+--------+
4 rows in set (0.00 sec)

以下是先按特定值排序的查询-

mysql> select *from DemoTable849 order by field(Color,'RED','GREEN','BLUE','ORANGE');

这将产生以下输出-

+--------+
| Color  |
+--------+
| RED    |
| GREEN  |
| BLUE   |
| ORANGE |
+--------+
4 rows in set (0.00 sec)

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首先在MySQL中指定字段值ORDER BY

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