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在MySQL中实现自定义排序顺序

2024-05-18 19:34:07 339

要在MySQL中实现自定义排序顺序，您需要使用ORDERBYFIELD()。让我们首先创建一个表-

create table DemoTable
   -> (
   -> Designation varchar(100)
   -> );

使用插入命令在表中插入一些记录-

insert into DemoTable values('Software Engineer');
insert into DemoTable values('Associate Software Engineer');
insert into DemoTable values('Software Development Engineer');
insert into DemoTable values('Product Manager');

使用select语句显示表中的所有记录-

select *from DemoTable;

这将产生以下输出-

+-------------------------------+
| Designation                   |
+-------------------------------+
| Software Engineer             |
| Associate Software Engineer   |
| Software Development Engineer |
| Product Manager               |
+-------------------------------+
4 rows in set (0.00 sec)

以下是在MySQL中实现自定义排序顺序的查询-

select *from DemoTable
   -> order by
field(Designation,'Associate Software Engineer','Software Engineer','Software Development Engineer','Product Manager');

这将产生以下输出-

+-------------------------------+
| Designation                   |
+-------------------------------+
| Associate Software Engineer   |
| Software Engineer             |
| Software Development Engineer |
| Product Manager               |
+-------------------------------+
4 rows in set (0.02 sec)

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在MySQL中实现自定义排序顺序

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