mysql - 对每个 ID 执行通常在单个 ID 上运行的查询

Question

所以我有这个查询:

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

我想在数据库中的每个 ID 上运行它，我该怎么做？

Answer 1

这有效(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