To provide data analysis you may need to perform some basic trend analysis. For example, if you want to identify the percentage of change in the number of orders received from one month to the next. The challenge to providing that on the fly is the change can be either an increase or a decrease, […]
2007-03-02 (first published: 2007-01-25)
6,553 reads
For fellow Canadians and neighbours to the south, you may find useful a function to validate the formatting of a Canadian postal code. More than once I've had to work with web programmers on checking that a postal code meets the A1A1A1 style, so carry around a function that simply returns a true/false bit if […]
2007-01-15 (first published: 2007-01-05)
1,114 reads
There are many ways to format dates, and rather that reinvent the wheel each time I've found it helpful to have a user defined function always available. As a function it of courses processes on each row, and to enable the most flexibility the formatting style is passed simply as a parameter. Year month and […]
2005-08-31 (first published: 2005-08-25)
489 reads
Came across a great script from Ken Kaufman on copying backups using xp_cmdshell. Thought I'd contribute a script I wrote that builds on that to restore the latest production backup to a testing or development server. In this case I routinely create all my production backups to a network share and then use that source […]
2002-12-16
671 reads
By SQLPals
Why sys.fn_dblog Is Undocumented And Why It's Still There Why sys.fn_dblog...
When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...
By Steve Jones
My life has some crazy travel stretches for sure. Between speaking, office visits, customer...
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