This article isn’t about the act of lock escalation itself, which is already well documented and generally well understood. Some myths (like row locks escalating to page locks) persist, but challenging those yet again probably wouldn’t change much.
2022-09-19
SQL Server provides information for troubleshooting performance. Ed Pollack demonstrates collecting SQL Server performance monitor data.
2021-08-11
Another quick post of simple changes you can make to your code to create more optimal execution plans. This one is on implicit conversions. An implicit conversion is when...
The...
2019-04-17
Years ago, my first go-to tool for performance tuning was Performance Monitor: it was available everywhere, worked in all versions, and gave me a lot of useful information without paying for a monitoring tool. Since then, I’ve moved on – wait stats are a much better starting point – but there are still 3 good Perfmon counters that I rely on.
2019-02-13
2,442 reads
By Steve Jones
Thanks to everyone that attended my sessions at VS Live San Diego yesterday. It...
By Steve Jones
I was creating a question on sp_readerrorlog and realized that this procedure is different...
By SQLPals
Why sys.fn_dblog Is Undocumented And Why It's Still There Why sys.fn_dblog...
Comments posted to this topic are about the item Implementing Type 4 Slowly Changing...
Comments posted to this topic are about the item The Disabled Index
Comments posted to this topic are about the item Server-Level Table sizes
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