Technical Article

An old and new way to query Hierarchical data

This script uses an old mathematical way of doing hierarchical queries. The most common way of showing hierarchical data in SQL Server is by creating a stored procedure that calls itself. This is not a recent problem, in fact this programming technique has been around since the first programming languages. By using stacks, you can […]

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2007-05-02 (first published: )

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Question of the Day

Multiple Escape Characters

In SQL Server 2025, I run this code (in a database with the appropriate collation):

SELECT UNISTR('%*3041%*308A%*304C%*3068 and good night', '%*') AS 'A Classic';
What is returned?

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