Question

我有以下表格，我正在努力获得正确的查询：

活动表：

ID   USER_ID    CARD_ID    CLOCK
1      123        04675545   4/3/2013 1:07:06 PM
2      123        04675545   4/3/2013 2:08:06 PM
3      124        04675550   4/3/2013 2:07:06 PM
4      124        04675550   4/3/2013 4:07:06 PM

** 价格表：

ID    FROMTIME    TOTIME       PRICEPERHOUR
1     08:00:00    19:59:59     50.00
2     20:00:00    07:59:59     75.00

我正在尝试创建一个程序，告诉我每个用户每天花费的金额基于每小时的费用和每天的总活动。一旦我有了正确的查询，我就会将其插入到事务表中。

关于什么是最佳做法的任何想法？非常感谢能得到帮助的人。

Answer 1

尝试此查询

如果要创建存储过程，可以从给定查询创建...

EDITED

select a.user_id, date(a.clock),  ABS(TIME_TO_SEC(TIMEDIFF(a.clock, b.clock))/3600)*c.PRICEPERHOUR as total from 
(Select if((@rn:=@rn+1)%2=0,@rn,@rn-1) As rId, act.* from act
join
(select @rn:=-1)a
order by user_Id, clock) a 
inner join 
(Select if((@rn1:=@rn1+1)%2=0,@rn1,@rn1-1) As rId, act.* from act
join
(select @rn1:=-1)b
order by user_Id, clock) b
ON a.rid=b.rid AND a.id <> b.id 
inner join 
price c
on 
TIME_TO_SEC(a.clock) between TIME_TO_SEC(c.FROMTIME) 
AND 
TIME_TO_SEC(c.TOTIME)
group by a.user_id, date(a.clock)

<强>结果：

| USER_ID |                DATE(A.CLOCK) |   TOTAL |
----------------------------------------------------
|     123 | April, 03 2013 00:00:00+0000 | 50.8333 |
|     124 | April, 03 2013 00:00:00+0000 |     100 |

MySql获取平衡查询

1 个答案:

EDITED

的 SQL FIDDLE