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ORing or ANDing with INNER and OUTER joins


ORing or ANDing with INNER and OUTER joins

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sanjeev_krs2004
sanjeev_krs2004
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Hi

can we do add OR or AND in INNER and OUTER joins conditions..?
if anybody has any clue, please reply.
Andras Belokosztolszki
Andras Belokosztolszki
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sanjeev_krs2004 (8/8/2008)
Hi

can we do add OR or AND in INNER and OUTER joins conditions..?
if anybody has any clue, please reply.



Yes, you can. The following (absolutely useless in terms of the result) query shows it:


select c.name
from sys.objects as o
join sys.columns as c on o.object_id = c.object_id
OR ( (o.object_id = c.object_id
AND o.object_id = 4) )



Regards,
Andras



Andras Belokosztolszki, MCPD, PhD
GoldenGate Software
GSquared
GSquared
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You can put anything you'd put in a Where clause, into a join clause. Some things might be a bad idea, but you can technically do it.

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Abrar Ahmad_
Abrar Ahmad_
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GSquared (8/8/2008)
You can put anything you'd put in a Where clause, into a join clause. Some things might be a bad idea, but you can technically do it.



but if we analyze its impact on performance then it may not be bad idea at all?
what u suggest by your expertise ?

Focus in Performance only!


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