Mysql自我加入多个订单

Question

假设我们有桌子

id，标题，日期

我需要构建1个查询：

select date = TODAY, order by id
select data < TODAY, order by date desc,
select data > TODAY, order by date asc,

Answer 1

我认为你需要使用UNION和子查询：

SELECT * FROM (
    SELECT *
    FROM YourTable
    WHERE Date(dateField) = Date(Now())
    ORDER BY ID 
) t1
UNION
SELECT * FROM (
    SELECT *
    FROM YourTable
    WHERE dateField < Now()
    ORDER BY dateField DESC
) t2
UNION
SELECT * FROM (
    SELECT *
    FROM YourTable
    WHERE Date(dateField) > Now()
    ORDER BY dateField 
) t3

这是一个简化的SQL Fiddle示例。

祝好运。