Index Scans and Table Scans

There are several things that you can do to improve performance by throwing more hardware at the problem, but usually the place you get the most benefit from is when you tune your queries. One common problem that exists is the lack of indexes or incorrect indexes and therefore SQL Server has to process more data to find the records that meet the queries criteria. These issues are known as Index Scans and Table Scans.

What If You Need to Index a Lot of Duplicate Data?

Let’s get a little nerdy and look at database internals.

Index Rebuilds Make Even Less Sense with ADR & RCSI

Accelerated Database Recovery (ADR) is a database-level feature that makes transaction rollbacks nearly instantaneous. Here’s how it works.

How Many Indexes Is Too Many?

Let’s start with the Stack Overflow database (any size will work), drop all the indexes on the Users table, and run a delete:

A Tidy Database is a Fast Database: Why Index Management Matters

Learn about the ways in which you might better manage indexes for a better performing and efficient database.

Uncover SQL Server Missing Indexes

In this article, we look at a SQL Server Dynamic Management View (DMV) that helps find queries that trigger missing index recommendations.

SQL Index Rebuild vs Reorganize Comparison

This tip covers the differences and similarities between SQL Server index rebuild and index reorganize operations.

Enable a Disabled Index

Disable All the Indexes

Disabling Indexes