Stairway to T-SQL: Beyond The Basics Level 7: Controlling the Flow of Your T-SQL
When you are writing TSQL code there are times when you want to perform the same logic over and over again. To accomplish this you can used the WHILE keyword. There are other times when you want to perform a conditional test and depending on the results of the test you execute one code block for the TRUE condition and possibly a different code block when the condition is FALSE. When you need to conditionally execute code based on the outcome of a condition you can used the IF keyword. In this Stairway level I will be discussing how to use the WHILE and IF constructs to control the flow of your TSQL code.
What you need for a Multi Subnet Configuration for AlwaysOn in SQL Server 2012
You have a new project that requires a primary database server in one building and secondary database server in another building to be configured as a Failover Cluster. What are the important points to consider for this scenario?
Data Mining Introduction Part 10: Microsoft Logistic Regression
This is an introduction to the SQL Server Microsoft Logistic Regression Data Mining Algorithm.
Data Mining Introduction Part 10: Microsoft Logistic Regression
This is an introduction to the SQL Server Microsoft Logistic Regression Data Mining Algorithm.
How to Make Scalar UDFs Run Faster (SQL Spackle)
It's a well known fact that Scalar UDFs are the stuff of performance nightmares in T-SQL. But are they really as bad as they say? SQL Server MVP Jeff Moden shows us that they might not really be as big a problem as you might think and what you can do when they actually are.
Differences In Native Compiled Procedures Execution Plans
All the wonderful functionality that in-memory tables and natively compiled procedures provide in SQL Server 2014 is pretty cool. But, changes to core of the engine results in changes in things that we may have developed a level of comfort with. Grant Fritchey explains.
Apology for today's article
We'd like to apologize to Gavin Draper who was plagiarized in an article published today.
Bad Meetings or Meeting Badly
Meetings are a part of modern corporate work that many of us despise. However is that because
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Implementing Type 4 Slowly Changing Dimensions in SQL Server
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The Disabled Index
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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