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sum of a union

Author

Topic

edp33
Starting Member

9 Posts

Posted - 2008-02-05 : 06:55:45

I am using this query

SELECT RCME_Projects.ProjectReference,1 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>0 AND RCME_Projects.TotalDays<=10
union
SELECT RCME_Projects.ProjectReference,2 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>10 AND RCME_Projects.TotalDays<=21
union
SELECT RCME_Projects.ProjectReference,3 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>21

To get the following output

ProjectReference,Number
2048,1
2341,2
1234,1
2345,1
2313,3
etc

I would like to get the SUM of the number column, but can't find a way to get the sum of a union. In mysql it appears you can do it using
SELECT sum(number) from
{
/* union query here */
} as total
but that doesn't seem to work for sql server 2005, would really appreciate any help!

ayamas
Aged Yak Warrior

552 Posts

Posted - 2008-02-05 : 06:57:49

Change braces {} with brackets () also write
select sum(number) from
(
Union query

)T

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-02-05 : 06:59:55

SELECT sum(number) from
(
SELECT RCME_Projects.ProjectReference,1 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>0 AND RCME_Projects.TotalDays<=10
union
SELECT RCME_Projects.ProjectReference,2 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>10 AND RCME_Projects.TotalDays<=21
union
SELECT RCME_Projects.ProjectReference,3 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>21

)

edp33
Starting Member

9 Posts

Posted - 2008-02-05 : 07:02:58

Thanks so much, it was missing the T at the end !!!

madhivanan
Premature Yak Congratulator

22864 Posts

Posted - 2008-02-05 : 08:05:29

quote:
Originally posted by edp33

I am using this query

SELECT RCME_Projects.ProjectReference,1 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>0 AND RCME_Projects.TotalDays<=10
union
SELECT RCME_Projects.ProjectReference,2 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>10 AND RCME_Projects.TotalDays<=21
union
SELECT RCME_Projects.ProjectReference,3 As Number
FROM RCME_Projects
WHERE RCME_Projects.TotalDays>21

To get the following output

ProjectReference,Number
2048,1
2341,2
1234,1
2345,1
2313,3
etc

I would like to get the SUM of the number column, but can't find a way to get the sum of a union. In mysql it appears you can do it using
SELECT sum(number) from
{
/* union query here */
} as total
but that doesn't seem to work for sql server 2005, would really appreciate any help!

Im MySQL also you need to use () in place of {}

Madhivanan

Failing to plan is Planning to fail

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