SQL Server Performance Tuning Guide

New to SQL Server performance tuning? Start here. The guides below are ordered so each one builds on the last: first understand what SQL Server is doing with your query, then find what is slow, then fix the most common causes.

1. Understand how SQL Server runs your query

2. Find what is slow

3. Fix the most common problems

4. Locking, blocking and deadlocks

New guides are added every week. See every Performance Tuning post.

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