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I got a question from a reader of my post How the Query Optimizer Uses Statistics (http://sqlblog.com/blogs/ben_nevarez/archive/2009/09/03/how-the-query-optimizer-uses-statistics.aspx) and I thought that it would be a good idea to post my answer here. Basically the request was to expand the previous example for a predicate with two columns.
First, a reminder that the histogram only shows the values of the first column of the statistics object. So, how the Query Optimizer does this?
One way to...
sa
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