Tips, Tricks, and Advice from the SQL Server Query Processing Team

The query processing team - query optimization & execution - providing tips, tricks, advice and answers to freqeuently-asked questions in a continued effort to make your queries run faster and smoother in SQL Server.

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  • Blog Post: Hash Warning SQL Profiler Event

    One of the less well-known warning events that is logged to SQL Profiler trace is the Hash Warning event . Hash Warning events are fired when a hash recursion or hash bailout has occurred during a hashing operation. Both of these situations are less than desirable, as they mean that a Hash Join or Hash...
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