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Statistics Techniques Can Fix Tough Performance Issues

PASS Data Community Summit via YouTube

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This session explains how SQL Server query optimization statistics affect execution plans and query performance. It covers filtered and computed-column statistics, sampling, stale statistics on ascending keys, and manually created statistics for correlated columns.

Syllabus

Introduction
Agenda
The Optimizer
Statistics Overview
Reading Statistics
Correlation Columns
Covering Columns
Insufficient Granularity
Insufficient Column Statistics
Automatic Statistics Example
Summary

Taught by

PASS Data Community Summit

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