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Posted by Erland Sommarskog on 11/30/06 22:43
Dia (fareldia.jefferies@selestia.co.uk) writes:
> I need a vew to link into a query in Access for a report, so it's not
> possible to do this in a view???
A VIEW is just a SELECT statement. You could use a multi-valued table
function, although I don't know what Access think of that.
You can probably make it without the temp tables though, by using derived
like below.
I would also question your use of DISTINCT. In my experience DISTINCT
is a keyword that you only occasionally have need for. If you find that
you need to use DISTINCT, it may be that you have insufficient join
conditions, or that you join against a subtable do an existennce, for
which you should use EXISTS instead. Or you are just putting it in to
cover your rear parts. However, DISTINCT calls for sorting operations, and
can be costly in performance.
Select Distinct
ins.DATE,
ins.ID,
ins.NAME ,
insIND,
ins.AMOUNT/100 as AmountIn,
outs.IND,
outs.AMOUNT/100 as AmountOut,
outs.NAME
From (Select Distinct
BIV.DATE, BIV.ID, CA.NAME, BIV.IND, BIV.AMOUNT, BIV.UNITS, BIV.INAME,
MB.NO
from Cars BIV
LEFT JOIN MountainBikes MB
ON MB.ID = BIV.ID
AND MB.CLASS = BIV.CLASS
AND MB.NUMBER = BIV.NUMBER
AND MB.DATE = BIV.DATE
LEFT JOIN Caterpillars CA
ON CA.ID = MB.NO
where BIV.CLASS = 'SWCH'
and BIV.IND = 'IN'
AND BIV.UNITS = 0
AND BIV.AMOUNT <> 0) AS ins
Join (Select Distinct
BIV.DATE, BIV.ID, CA.NAME, BIV.IND, BIV.AMOUNT, BIV.UNITS, BIV.NAME,
MB.NO
from Cars BIV
LEFT JOIN Mountainbikes MB
ON MB.ID = BIV._ID
AND MB.CLASS = BIV.CLASS
AND MB.NUMBER = BIV.NUMBER
AND MB.DATE = BIV.DATE
LEFT JOIN Caterpillars CA ON CA.ID = MB.NO
where BIV.CLASS = 'SWCH'
and BIV.IND = 'OUT'
AND BIV.UNITS = 0
AND BIV.AMOUNT <> 0) AS outs
ON OUTS.ID = INS.ID
where outs.NAME = ins.NAME
and outs.NO = ins.NO
--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se
Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx
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