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Finding Blocked Processes and Deadlocks using SQL Server Extended Events

A lot of folks would have you think that Extended Events need to be complicated and involve copious amounts of XML shredding and throwing things across the office. I’m here to tell you that it doesn’t have to be so bad. Collecting Blocked Process Reports and Deadlocks Using Extended Events When you want to find…
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How to Cache Stored Procedure Results

SQL Server, T-SQL
Say you run an online store, and on each item’s page, you need to show related items that people purchased. Let’s take an Amazon page for my favorite rechargeable AA batteries: Frequently Bought Together In a perfect world, we would cache this data in the web/app tier – but back here in the real world,…
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Optimize for… Mediocre?

Some query hints sound too good to be true. And, unfortunately, usually they aren’t quite as magical as they might seem. Frustration with unpredictable execution times People often learn about parameter sniffing when query execution times stop being predictable. Occasionally you’ll hear about a stored procedure taking much longer than normal, but the next time…
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Implementing Snapshot or Read Committed Snapshot Isolation in SQL Server: A Guide

How to change isolation levels without losing your marbles. A client said the coolest thing to me the other day. He said, “We talked before about why we would want to start using optimistic locking in our code. How do we get there?” If you’re not a SQL Server geek, that comment probably doesn’t even…
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The Art of the Execution Plan

Execution Plans
There’s beauty everywhere – even in SQL Server.  I was just staring at this plan when I was struck by its beauty: Stored Procedure Part 1 Oh, sure, it’s ugly, and I recoiled in horror at first, but when you get over that reaction, there’s an amazing amount of stuff there.  Someone – probably many…
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