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Discrete and Continuous Data in SQL

Not all data is discrete; some data types represent a continuum. In SQL, we have to approximate them and live with the special problems of handling continuous data. We need to understand the problems associated with continuous data types, when these will happen, and how it affects constraints and the results of queries. Joe Celko explains.

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Azure SQL Database Auditing

While a diminished level of control is certainly a factor to consider when contemplating migration of on-premises systems to Microsoft Azure, especially when dealing with PaaS resources such as Azure SQL Database, you have a range of techniques at your disposal that allow you to control and monitor both the status of and access to your Azure-resident services. One of these techniques is SQL Database auditing.

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The Disabled Index

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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