So which null equals this null, that null? maybe this null, or is it this null?

Posted by GrumpyOldDBA on SQL Blogcasts See other posts from SQL Blogcasts or by GrumpyOldDBA
Published on Wed, 16 Jun 2010 19:15:56 GMT Indexed on 2010/06/16 20:54 UTC
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Tuning takes many routes and I get into some interesting situations and often make some exciting finds, see http://sqlblogcasts.com/blogs/grumpyolddba/archive/2010/05/17/just-when-you-thought-it-was-safe.aspx for an example. Today I encountered a multitude of Foreign Key constraints on a table, now FKs are often candidates for indexes and as none of the defined keys had an index it required a closer look. I view foreign key constraints as somewhat of a pain, excessive keys can cause excessive related...(read more)

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