Posted by Erland Sommarskog on 05/04/06 00:41

(KyussWren@gmail.com) writes:
> Hey, whoa, that works.
> You're the man Tom.
>
> So just use EXISTS when there are nulls in the select list?
> Kinda like coalesce, but for subqueries?

EXISTS and NOT EXISTS have wider applicability than so. You also need
EXISTS / NOT EXISTS when the condition involves more than one column.
IN + subquery is mainly something I use when I'm writing ad hoc-queries
and I'm lazy. In programming code I use EXISTS / NOT EXISTS 90% of
the time.


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

Books Online for SQL Server 2005 at
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