sql - 结果列表顶部的指定记录

Question

任务：在结果列表顶部选择指定记录

我丑陋的变种：

(select * from mytable where id = 42)
union all
(select * from mytable where id != 42 order by id)

除了ansi查询变体之外，mysql对我来说也是非常有趣的

score 3 · Accepted Answer

ANSI 和供应商 SQL 解决方案之间没有区别

select *
from mytable 
order by
    CASE WHEN id = 42 THEN 0 ELSE 1 END, id

注意：没有 ORDER BY 子句的表或 SELECT没有保证或隐含的顺序

score 1 · Accepted Answer

假设 id 始终为正，请尝试：

select *
from mytable 
order by CASE WHEN id = 42 THEN 0 ELSE id END

2 回答 2