使用SELECT. WHERE id IN(…)，order result by IN()?(复制)

Possible Duplicate:
Ordering by the order of values in a SQL IN() clause

可能的重复:按照SQL in()子句中的值的顺序排序

With a query such as:

有以下查询:

SELECT * FROM images WHERE id IN (12,9,15,3,1)

is it possible to order the results by the contents of the IN clause?

可以根据IN子句的内容来订购结果吗?

The result I'm looking for would be something like:

我想要的结果是:

[0] => Array
    (
        [id] => 12
        [file_name] => foo
    )   
[1] => Array
    (
        [id] => 9
        [file_name] => bar
    )   
[2] => Array
    (
        [id] => 15
        [file_name] => baz
    )
...

1 个解决方案

#1

The IN clause defines a set, and a set in mathematics has no order.

IN子句定义了一个集合，而数学中的集合没有顺序。

However there seems to be a workaround for MySQL by using the FIELD() function:

然而，使用FIELD()函数似乎可以解决MySQL的问题:

Ordering by the order of values in a SQL IN() clause
按照SQL in()子句中的值的顺序排序

#1