Articles

Technical Article

The Power of Generate_series

SQL 2022 introduced the function generate_series which permits us to solve problems for which we previously had to use a table of numbers (also known as a "tally table"). generate_series is a great addition, because when using a table of numbers there was always a risk that you could run out of numbers. Or some joker could have deleted rows from the table. All these worries are gone with generate_series.

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2025-03-05

SQLServerCentral Article

Determining Whether Home Addresses Fall Within a Tornado Polygon Using Spatial Functions

Geographic information systems (GIS) play a critical role in emergency response planning and risk assessment. One of the key challenges in this field is determining whether a specific location falls within an area of interest. This capability is especially valuable for property and casualty (P&C) insurers, who need to assess their insured property exposure when severe weather events such as tornadoes occur.

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2025-03-04 (first published: )

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Technical Article

Improve Query Performance when SQL Server Ignores Nonclustered Index

Do you wonder why SQL Server ignores an index? Do you think about how you can deal with this problem? When you include too many columns in a query you decrease index selectivity. So, if you write a query like “Select * From …” the chance of choosing your nonclustered index will decrease.

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2025-03-03

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Change Tracking Data Retention Options

By Steve Jones - SSC Editor

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Requiring Technical Debt Payments

By Steve Jones - SSC Editor

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Question of the Day

Change Tracking Data Retention Options

If I am running this code:

ALTER DATABASE AdventureWorks2017 SET CHANGE_TRACKING = ON (CHANGE_RETENTION=4 xxx);
What are the possible choices for xxx?

See possible answers