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如何以与IN子句相同的顺序获取MySQL查询结果？

2024-05-02 21:17:05 317

为此，您可以将其IN()与ORDERBY一起使用FIELD()。让我们首先创建一个表-

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

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable(FirstName) values('Chris');
mysql> insert into DemoTable(FirstName) values('Robert');
mysql> insert into DemoTable(FirstName) values('Mike');
mysql> insert into DemoTable(FirstName) values('Sam');
mysql> insert into DemoTable(FirstName) values('Carol');
mysql> insert into DemoTable(FirstName) values('David');

使用select语句显示表中的所有记录-

mysql> select *from DemoTable;

这将产生以下输出-

+----+-----------+
| Id | FirstName |
+----+-----------+
|  1 | Chris     |
|  2 | Robert    |
|  3 | Mike      |
|  4 | Sam       |
|  5 | Carol     |
|  6 | David     |
+----+-----------+
6 rows in set (0.00 sec)

以下是如何以与IN子句相同的顺序获取查询结果。

mysql> select FirstName from DemoTable where Id IN(4,5,6) order by field(Id,4,5,6);

这将产生以下输出-

+-----------+
| FirstName |
+-----------+
| Sam       |
| Carol     |
| David     |
+-----------+
3 rows in set (0.00 sec)

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如何以与IN子句相同的顺序获取MySQL查询结果？

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