Question

我需要加入接下来两个查询的结果：

SELECT EXTRACT( HOUR 
FROM (
TIMEDIFF( NOW( ) , (

SELECT MIN( date_cmd ) 
FROM arc_commande_temp
WHERE id_cmd =  '6580' ) )
)
) AS HOURS

SELECT EXTRACT( MINUTE
FROM (
TIMEDIFF( NOW( ) , (

SELECT MIN( date_cmd ) 
FROM arc_commande_temp
WHERE id_cmd =  '6580' ) )
)
) AS MINS

我知道我必须以某种方式使用它们，但这个Extract函数给了我很多问题。我有下一个仍然有效的查询

SELECT 
    * 
FROM 
    (SELECT 
        MIN(date_cmd) AS HOURS
    FROM 
        arc_commande_temp
    WHERE 
        id_cmd = '6580') AS HOURS, 
    (SELECT 
        MIN(date_cmd) AS MINS
    FROM 
        arc_commande_temp
    WHERE 
        id_cmd = '6580') AS MINS

这不是我需要的，但我正在尝试修改它以获得我想要的东西 - 但是当我尝试更改其他内容以构建我需要的查询时...我得到一个错误： - （

提前致谢并问候

Answer 1

SELECT 
    EXTRACT(HOUR FROM (TIMEDIFF(NOW( ), (
        SELECT MIN(date_cmd) 
        FROM arc_commande_temp
        WHERE id_cmd =  '6580' 
    )))) AS HOURS
    ,
    EXTRACT(MINUTE FROM (TIMEDIFF(NOW( ) , (
        SELECT MIN( date_cmd ) 
        FROM arc_commande_temp
        WHERE id_cmd =  '6580' 
    )))) AS MINS

加入两个包含时间函数的mysql查询

1 个答案: