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WHERE IN syntax for Exist/Not Exist
Message
From
29/01/2017 10:57:36
Michel Fournier
Level Extreme Inc.
Petit-Rocher, New Brunswick, Canada
 
 
To
29/01/2017 10:55:51
Christian Isberner
Hannover, Germany
General information
Forum:
Microsoft SQL Server
Category:
SQL syntax
Title:
Re: WHERE IN syntax for Exist/Not Exist
Environment versions
SQL Server:
SQL Server 2014
OS:
Windows 8.1
Network:
Windows Server 2012
Miscellaneous
Thread ID:
01647092
Message ID:
01647114
Views:
30
>What I learned is that IN with a subquery is always very poor performance and should never be done. Always use Exists instead.
>
>http://stackoverflow.com/questions/2065329/sql-server-in-vs-exists-performance

Thanks
Michel Fournier
Level Extreme Inc.
Designer, architect, owner of the Level Extreme Platform
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