SQL WHERE IN(...)按列表顺序排序吗? [英] SQL WHERE IN (...) sort by order of the list?

问题描述

假设我已使用where子句查询数据库

Let's say I have query a database with a where clause

WHERE _id IN (5,6,424,2)

是否可以按照_id在列表中列出的顺序对返回的游标进行排序? _id属性在Cursor中从头到尾分别为5、6、424、2?

Is there any way for the returned cursor to be sorted in the order that the _id's where listed in the list? _id attribute from first to last in Cursor to be 5, 6, 424, 2?

这恰好是在Android上通过ContentProvider进行的，但这可能不相关.

This happens to be on Android through a ContentProvider, but that's probably not relevant.

推荐答案

使用子查询选择ID列表并加入它:

Select ID list using subquery and join with it:

select t1.*
from t1
inner join
(
  select 1 as id, 1 as num
  union all select 5, 2
  union all select 3, 3
) ids on t1.id = ids.id
order by ids.num

UPD:固定代码

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