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Group by select problem

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bsasiju

Posted Monday, October 15, 2007 7:39 AM

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Hi all
have developed my library project counter problem when I want to get sum
book status (in , out ,lost,damage and removed) of the same title from master Book table vs details Book table in one row.Master book table link with detail table field bookID and their status field on the book details have 1=in,2=out,3=lost,4=damage,5=removed .I tried to use group by method but got sum their status of same title different rows
Please need you help
thank in advanced

Post #410817

ALZDBA

Posted Monday, October 15, 2007 7:49 AM

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Maybe this gets you started...

Select M.BookId, D.[status], count(*) as NumberOfOccurrences
from [master Book table] M
inner join [details Book table] D
on M.bookID = D.BookId
Group by M.BookId, D.Status

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Post #410820

bsasiju

Posted Monday, October 15, 2007 8:07 AM

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thank for you answer
but I hope you
did not get me well I want to get sum of status Book i.e In book,out Book Lost book,Damage and Removed as table fields for each title book
thanks in advance

Post #410843

Matt Miller (#4)

Posted Monday, October 15, 2007 9:03 AM

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Sounds like you might be looking for a "pivot query" solution. Something like:

Select M.BookId, M.booktitle,
sum(case when d.status=1 then 1 else 0 end) as TotalIn,
sum(case when d.status=2 then 1 else 0 end) as TotalOut,
sum(case when d.status=3 then 1 else 0 end) as TotalLost,
sum(case when d.status=4 then 1 else 0 end) as TotalDamaged,
sum(case when d.status=5 then 1 else 0 end) as TotalRemoved

from [master Book table] M
inner join [details Book table] D
on M.bookID = D.BookId
Group by M.BookId, M.booktitle

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Post #410874

bsasiju

Posted Tuesday, October 16, 2007 12:06 AM

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thanks a lot its work

Post #411127

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