David Durant


Stairway to SQL Server Indexes

Deeper into Nonclustered Indexes: Stairway to SQL Server Indexes Level 2

By this stage, you should be familiar with the basics of SQL Server indexes. We've discussed what an Index actually is, as well as some of the most common types you're likely to encounter. Now that we've seen some simple examples of how Indexes can be useful, we're going to delve deeper into nonclustered indexes, as we'll see how they can improve the performance of more complex queries.

(3)

You rated this post out of 5. Change rating

2022-11-16 (first published: )

38,057 reads

Stairway to SQL Server Indexes

Pages and Extents: Stairway to SQL Server Indexes Level 4

We've now seen how indexed and non-indexed tables perform in queries, and established "logical reads" as the metric for query performance. Now it is time to explain why logical reads are an excellent metric and also explain what is actually being read.

(2)

You rated this post out of 5. Change rating

2019-03-06 (first published: )

19,304 reads

Stairway to SQL Server Indexes

An Introduction to SQL Server Indexes: Stairway to SQL Server Indexes Level 1

Indexes are the database objects that enable SQL Server to satisfy each data access request from a client application with the minimum amount of effort, resulting in the maximum performance of individual requests while also reducing the impact of one request upon another. Prerequisites: Familiarity with the following relational database concepts: Table, row, primary key, foreign key

(1)

You rated this post out of 5. Change rating

2014-11-05 (first published: )

67,615 reads

Blogs

Accessing the Data API Builder MCP Server from VS Code

By

I recently started playing with the MCP Server for SQL Server, which is a...

From DBA or Data Engineer to AI Engineer: A Realistic Path

By

If you spend your days tuning queries, managing pipelines, or keeping a production database...

Asynchronous Replication of Snapshots from an ActiveCluster Pod to a Third Array

By

I’ve been rebuilding my three-site SQL Server demo lab, and I ran into something...

Read the latest Blogs

Forums

ALAMAT BCA KCU TEGAL Tlp:08218154374

By layanan_Bca88

Hub Via Wa 628218154374 Alamat Jl. A. R. Hakim No.2, Mangkukusuman, Kec. Tegal Tim.,...

ALAMAT BCA KCU SALATIGA Tlp:08217555651

By m4rt1n4

Hub Via Wa 628217555651 Alamat Jl. Jend. Sudirman Jl. Diponegoro No.15, Salatiga, Kec. Sidorejo,...

ALAMAT BCA KCU PEKALONGAN Tlp:0817825533

By R4nt4u

Hub Via Wa:62817825533 Alamat Jl. Diponegoro No.27, Dukuh, Kec. Pekalongan Utara, Kota Pekalongan, Jawa...

Visit the forum

Question of the Day

Rebuilding All Indexes

I have added a few indexes to one of my tables in SQL Server 2025:

ALTER TABLE dbo.CustomerContact
ADD CONSTRAINT PK_CustomerContact
    PRIMARY KEY (CustomerID);

-- Create index on CustomerEmail
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (CustomerEmail);
CREATE INDEX IX_CustomerContact_CustomerPhone
ON dbo.CustomerContact (phone);
I then do this to disable one index:
alter index IX_CustomerContact_CustomerPhone on dbo.CustomerContact disable
I see this when I check the index status:Index status for CustomerContactI decide to rebuild all indexes with this command:
ALTER INDEX ALL ON dbo.CustomerContact rebuild
After I do this, what will I see for the index status?

See possible answers