SQL errors and other failures fixed from the trenches
Solve your SQL Server error, problem or installation failure with this advice. Learn how to fix SQL performance errors and suspect data recovery problems.
2008-10-20
3,381 reads
Performance Tuning
Speeding up the Performance of Table Counts in SQL Server 2005
This article describes how the Object Catalog Views can be used to determine the number of rows in a table
2008-09-29
3,623 reads
2008-09-25
2,839 reads
Performance Implications of Database Snapshots
Books online mentions that performance may be reduced when using database snapshots. I decided to investigate how severe that reduction could be.
2008-09-23
9,786 reads
Performance tuning through memory and CPU
In this tip, learn how memory allocation and CPU processing impact SQL Server performance and get tips for tuning these areas.
2008-09-22
4,447 reads
How To Collect Performance Data With TYPEPERF.EXE
One of the things I typically need to do is to collect performance data on the server which includes CPU, memory and disk utilization as well as SQL Server-specific data. What command line tools are available to do this?
2008-09-15
4,384 reads
Tuning performance via disk arrays and disk
Tuning SQL Server performance means tuning hardware configurations and setup. Learn about configuring disk arrays and SQL disk partitioning alignment.
2008-09-03
4,568 reads
2008-09-01
3,917 reads
Identifying Queries Running Slower Than Normal
The attached article describes a utility that allows you to quickly identify which queries are running slower than expected. Note this article was updated to correct the formatting issues.
2008-08-14 (first published: 2008-08-07)
24,849 reads
2008-07-24
3,892 reads
Blogs
Differences Between xp_readerrolog and sp_readerrorlog: #SQLNewBlogger
By Steve Jones
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 SQLPals
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
When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...
Forums
Implementing Type 4 Slowly Changing Dimensions in SQL Server
Comments posted to this topic are about the item Implementing Type 4 Slowly Changing...
The Disabled Index
Comments posted to this topic are about the item The Disabled Index
Server-Level Table sizes
Comments posted to this topic are about the item Server-Level Table sizes
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