执行通常在每个ID的单个ID上运行的查询

Question

所以我有这个问题：

SELECT ABS(
    TIMESTAMPDIFF(MINUTE, NOW(),  
        (SELECT MAX(`Time`) FROM ddHistorical WHERE ID = '5')  
    )
)

我想在我的数据库中的每个ID上运行它，我该怎么做？

Answer 1

这可行（http://www.sqlfiddle.com/#!2/e8ac0/3/0）

  SELECT Abs(Timestampdiff(minute, Now(), (SELECT Max( ` time ` ) 
                                         FROM   ddhistorical 
                                         WHERE  id = a.id 
                                         GROUP  BY id))) 
FROM   ddhistorical AS A 
GROUP  BY id 

Answer 2

试试这个： -

SELECT ABS(TIMESTAMPDIFF(MINUTE, NOW(), (SELECT MAX(`Time`) FROM ddHistorical