MySQL按第一列排序，按第二列排序

Question

我正在嘗試爲我的MySQL查詢獲得正確的ORDER BY，但是我無法通過正確的方式獲取訂單。

我有兩列：

1. breaking_news =值NULL或1
2. news_published_dt =值DATETIME

我怎麼能進行排序，以便第一輸出是breaking_news NOT NULL排序由DATETIME ，然後剩下的只是DATETIME訂購？

我已經試過這一點，但它給了我無輸出

ORDER BY CASE WHEN n.breaking_news IS NOT NULL THEN 1 ELSE 2 END, n.news_published_dt DESC 

Answer 1

的樣子，你正在尋找這樣的：

SELECT 
    * 
FROM 
    tableName 
ORDER BY 
    breaking_news DESC, 
    news_published_dt ASC 

Answer 2

SELECT * FROM table_name ORDER BY news_published_dt DESC 

Answer 3

select * from 
(select *, 1 Shortby from table 1 where (breaking_news is null) 
union all 
select *, 2 Shortby from table 1 where (breaking_news=1) 
) a 
order by Shortby ,news_published_dt Desc 

Answer 4

使用此 ORDER BY CASE WHEN n.breaking_news IS NOT NULL THEN n.breaking_news ELSE 'zzzzzzzzzzzzzzzzzzzzzz' END，n.news_published_dt DESC