如何按月查询mysql上的sum字段

Question

Need help, friends. :)

Could you help me, please.

So, i've a table on mySQL. Preview like this :

MyDate            phone           name    costA   costB 
2011-09-13  0767657567567   Xyz     35  30
2011-09-24  0767657567567   Xyz     10  15
2011-09-26  0767657567567   Xyz     25  15
2011-09-27  081323232323    Abc     20  25

I want to make the query that execute by condition WHERE MONTH(MyDate) = '9' and result like this :

phone          name    sum(costA)  sum(costB)
0767657567567  Xyz     70          60  
081323232323   Abc     20          25

Coudl you tell me how the query of the result above?

Thanks in advanced.

Answer 1

use

SELECT 
MONTH(MyDate), 
phone, 
name, 
sum(costA), 
sum(costB) 
FROM MyTable 
WHERE MONTH(MyDate) = '9' 
GROUP BY MONTH(MyDate), phone, name

Answer 2

I'm not too sure but you can try the following:

SELECT phone, name, sum(costA), sum(costB)
FROM table
WHERE MONTH(MyDate) = 9
GROUP BY phone, name

It's basically a simple GROUP BY clause that can do the sum according to the name that appears and if the month is 9. Let me know if it works.