You can create a database under the assumption that SQL looks after all the problems of concurrency. It will probably work fine under test conditions: then, in the production environment, it starts losing data in subtle ways that defy repetition. It is every Database Developer's nightmare. In an excerpt from his acclaimed book, Alex Kuznetsov explains why it happens, and how you can avoid such problems.
2010-07-09
3,657 reads
Take a look at a sample chapter and see who won copies of this book from our Question of the Day Contest.
2007-09-13
2,775 reads
Longtime author here, Michael Coles, has written a new book on SQL Server 2005 Programming and has sent us a sample chapter on SQLCLR programming. Download the chapter and source code and grab this great book from your favorite bookseller.
2007-05-03
4,289 reads
Apress is giving away some copies of this book on SQLServerCentral.com by sponsoring our Question of the Day. A sample chapter is also available online now!
2005-12-15
4,654 reads
Cryptography and encryption are coming to many systems, including databases. Check out a sample chapter from this upcoming book.
2005-11-07
3,855 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
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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