sum of column diffrent conditon

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1.00/5 (1 vote)

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hi frd'z.............................
i have a table like.......................

c.id	gas	water	wire	dranage	roadl	roadtype
1	100	100	0	0	100	a
1	25	0	51	55	250	b
1	0	0	12	0	150	c
1	60	80	0	70	50	d
2	50	0	20	50	10	a
2	50	70	0	0	50	b
2	0	80	0	20	20	c
2	0	0	10	50	30	d
.	.	.	.	.	.	.
.	.	.	.	.	.	.
n	n	n	n	n	n	n

------------------------------------------------------------------------------------------------
i wnat result like........

select when gas=0.00 then sum(roadl)as b,when water=0.00 then sum(roadl)as c,when wire=0.00 then sum(roadl)as d,when dranage=0.00 then sum(roadl)as a from table

cid	b	c 	d	a	
1	150	400	150	250	
2	50	40	70	50

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

Posted 15-Mar-13 1:03am

rahul 92

Updated 15-Mar-13 21:01pm

v5

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Comments

Sandeep Mewara 15-Mar-13 7:20am

Ok. And what have you tried? Where are you stuck?

rahul 92 15-Mar-13 8:17am

i haven't any idea to do this

Sandeep Mewara 16-Mar-13 3:50am

It does not work like this here.

Here is what is expected of enquirers:
1. TRY first what you want to do! You may find that it's not that hard.
2. Formulate what was done by you that looks like an issue/not working.

Try them and tell if you face issues.
Members will be more than happy to help like this.

gvprabu 15-Mar-13 7:51am

Give some more clear explanation about your problem...

rahul 92 15-Mar-13 8:16am

i have a table which is declare alrady
i want to sum of roadl which parallel row those column value which have 0.00 value in a seperate column ........

exa. is decalared in my problem..................

Maciej Los 15-Mar-13 17:13pm

Still not clear.
In your table you have got a, b, c, d, e as roadtype. How they can have zeros?

rahul 92 16-Mar-13 3:02am

here i have change my column name plzzzzzz,
chek it and give any answer ,bcoz still problem not soleved

P A N K A J 16-Mar-13 0:30am

Provide more details. I think, here a,b,c,d are creating confusion.

rahul 92 16-Mar-13 3:02am

here i have change my column name plzzzzzz,
chek it and give any answer ,bcoz still problem not soleved

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OriginalGriff · Answer 1 · 2013-03-15T23:14:00

Solution 1

You need to use a CASE WHEN clause.
Try this:

SQL

SELECT cid,
       SUM(CASE WHEN gas=0 THEN roadl ELSE 0 END) AS b,
       SUM(CASE WHEN water=0 THEN roadl ELSE 0 END) AS c,
       SUM(CASE WHEN wire=0 THEN roadl ELSE 0 END) AS d,
       SUM(CASE WHEN dranage=0 THEN roadl ELSE 0 END) AS a
FROM MyTable GROUP BY cid

Posted 15-Mar-13 23:14pm

OriginalGriff

Comments

Maciej Los 16-Mar-13 11:07am

Excellent!
+5!