SQL中的数据库查询

问题描述

大家好，

我有一个像下面的表格结构

Hi All,

I have a table structure like below

Date	      PID	Time	Bid	Task	Uid	Cflag	Hflag
10/10/2012	12	10	7	Break	10	1	0
10/10/2012	NULL	10	7	Meeting	10	2	1
10/10/2012	NULL	10	7	Break	10	2	1

我需要每次竞标的时间总和

结果:

i need the sum of time for each Bid

Result :

BID    Time

7       30 

请帮助我编写sql查询

在此先感谢
莫汉

[edit]已添加代码块-OriginalGriff [/edit]

please help me to write sql query

Thanks in advance
Mohan

[edit]Code block added - OriginalGriff[/edit]

推荐答案

SELECT Bid as BID, sum(Time) FROM myTable GROUP BY Bid

Select Bid,sum(Time) from table group by Bid

SELECT Bid, sum(Time) Time FROM YourTable GROUP BY Bid

谢谢

Thank you

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