The Scary DBA

Blog Post

Two Clustered Indexes?

Everyone knows that you only get a single clustered index, right? Wouldn’t it be great though if you could have two clustered indexes? Well, you can. Sort of. Let’s...

2022-01-31 (first published: )

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Blog Post

Why Is “WHERE 1=0” Slow?

I saw a question the other day, questioning why they’re creation of temporary tables was so slow. What they were doing was (a much more complicated version of) this:...

2022-01-24 (first published: )

912 reads

Blog Post

Identifying Recompile Causes

Strictly speaking, a recompile isn’t really a performance tuning problem. In fact, a lot of time, recompiles are desired because they reflect changes in statistics which are likely to...

2022-01-12 (first published: )

289 reads

Blog Post

Login Timeouts

I was recently approached at work about a company that was seeing tons of timeouts in SQL Server. I was asked how to troubleshoot this. There are lots of...

2021-10-06 (first published: )

583 reads

Blog Post

Login Timeouts

I was recently approached at work about a company that was seeing tons of timeouts in SQL Server. I was asked how to troubleshoot this. There are lots of...

2021-09-27

9 reads

Blog Post

Containers: A Short Rant

I find myself doing more and more work with containers. Yet, I also find that a lot of people seem to be resistant to the concept. I’m always surprised...

2021-09-29 (first published: )

488 reads

Blogs

Differences Between xp_readerrolog and sp_readerrorlog: #SQLNewBlogger

By

I was creating a question on sp_readerrorlog and realized that this procedure is different...

Why sys.fn_dblog Is Undocumented And Why It's Still There

By

Why sys.fn_dblog Is Undocumented And Why It's Still There Why sys.fn_dblog...

T-SQL Tuesday #202 SQL Server Outage You’ll Never Forget: A Roundup

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When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...

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Forums

Implementing Type 4 Slowly Changing Dimensions in SQL Server

By Dinesh Asanka

Comments posted to this topic are about the item Implementing Type 4 Slowly Changing...

The Disabled Index

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The Disabled Index

Server-Level Table sizes

By Artur Sanin

Comments posted to this topic are about the item Server-Level Table sizes

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Question of the Day

The Disabled Index

I run this code on SQL Server 2022.

CREATE TABLE Drink
(
    drinkid INT NOT NULL
        CONSTRAINT DrinkPK PRIMARY KEY CLUSTERED,
    drinkname VARCHAR(20),
    rating NUMERIC(2, 1)
)
GO

INSERT INTO Drink
(
    drinkid,
    drinkname,
    rating
)
VALUES
(1, 'Margarita', 4.5),
(2, 'Mojito', 4.3),
(3, 'Old Fashioned', 4.7),
(4, 'Martini', 4.4),
(5, 'Cosmopolitan', 4.2)
GO
ALTER INDEX drinkpk ON dbo.drink DISABLE
GO
SELECT * FROM dbo.Drink
GO
What is the result?

See possible answers