Posted by Erland Sommarskog on 07/09/05 00:23

sjoshi (sjoshi@ingr.com) writes:
> I get Invalid object name 'bstr'. when I try to run this query
>
> Select distinct c0.oid, c1.Value, c2.Value, c3.Value
> From
> (SELECT oid FROM dbo.COREAttribute
> WHERE CLSID IN (
> '{1449DB2B-DB97-11D6-A551-00B0D021E10A}',
>....
> '{C31DB61A-5221-42CF-9A73-FE76D5158647}'
> )) AS c0 ,
>
> (select oid, dispid, value
> FROM dbo.COREBSTRAttribute
> WHERE iid = '{1449DB20-DB97-11D6-A551-00B0D021E10A}'
> ) As bstr
>
> LEFT JOIN bstr AS c1
> ON (c0.oid = c1.oid)
> AND c1.dispid = 28
> LEFT JOIN bstr AS c2
> ON (c0.oid = c2.oid)
> AND c2.dispid = 112
> LEFT JOIN bstr AS c3
> ON (c0.oid = c3.oid)
> AND c3.dispid = 192

You cannot refer a virtual table in this way in a query. What you are
trying is a Common Table Expression, which is a new feature in SQL 2005
(culled from ANSI SQL). There you would write:

WITH bstr AS
(select oid, dispid, value
FROM dbo.COREBSTRAttribute
WHERE iid = '{1449DB20-DB97-11D6-A551-00B0D021E10A}')
Select distinct c0.oid, c1.Value, c2.Value, c3.Value
From (SELECT oid FROM dbo.COREAttribute
WHERE CLSID IN ('{1449DB2B-DB97-11D6-A551-00B0D021E10A}',
....
'{C31DB61A-5221-42CF-9A73-FE76D5158647}'
)) AS c0 ,
LEFT JOIN bstr AS c1
ON (c0.oid = c1.oid)
AND c1.dispid = 28
LEFT JOIN bstr AS c2
ON (c0.oid = c2.oid)
AND c2.dispid = 112
LEFT JOIN bstr AS c3
ON (c0.oid = c3.oid)
AND c3.dispid = 192

In SQL 2000, you will have to paste in the query in all the three
LEFT JOIN. Or put the stuff into a temp table or table variable first,
so that the query is evaluated only once. In fact this is necessary
in SQL 2005, as the nice syntax only acts as a macro definition.


--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server SP3 at
http://www.microsoft.com/sql/techinfo/productdoc/2000/books.asp

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