SQL - when should you use "with (nolock)"

Posted by Andy White on Stack Overflow See other posts from Stack Overflow or by Andy White
Published on 2009-03-26T17:13:35Z Indexed on 2010/05/10 20:24 UTC
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sql

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nolock

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best-practices

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sql-server

Can someone explain the implications of using "with (nolock)" on queries, when you should/shouldn't use it?

For example, if you have a banking application with high transaction rates and a lot of data in certain tables, in what types of queries would nolock be okay? Are there cases when you should always use it/never use it?

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