When you use Microsoft SQL Server 2014 to run a query that uses a nested loops join, you experience poor query performance when an incorrect choice of a query execution plan occurs.
This behavior occurs because the query optimizer chooses an incorrect nested loops join strategy when incorrect cardinality estimates or incorrect operator costing is used.
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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