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SQL SERVER – Function Property – Deterministic or Non-Deterministic

Pinal Dave
SQL, SQL Server, SQL Tips and Tricks
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I recently received question through email that how to determine if any user defined function is deterministic or non-deterministic?

First go through two articles I have written about deterministic and non-deterministic function.

SQL SERVER – Deterministic Functions and Nondeterministic Functions

SQL SERVER – 2005 – Use of Non-deterministic Function in UDF – Find Day Difference Between Any Date and Today

You can run following code to determine if function is deterministic or not.

SELECT OBJECTPROPERTY(OBJECT_ID('dbo.ufnGetAccountingStartDate'),
'IsDeterministic') IsFunctionDeterministic

Reference : Pinal Dave (https://blog.sqlauthority.com)

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Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 22 years of hands-on experience. He holds a Masters of Science degree and numerous database certifications.

Pinal has authored 14 SQL Server database books and 88 Pluralsight courses. To freely share his knowledge and help others build their expertise, Pinal has also written more than 5,800 database tech articles on his blog at https://blog.sqlauthority.com.

Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service. If you need help with any SQL Server Performance Tuning Issues, please feel free to reach out at pinal@sqlauthority.com.

Pinal is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2).

Nupur Dave is a social media enthusiast and an independent consultant. She primarily focuses on the database domain, helping clients build short and long-term multi-channel campaigns to drive leads for their sales pipeline.

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