User Defined Function (UDF)

SQLServerCentral Article

A User-Defined Function returns more rows

  • Article

The Problem Recently, while working with one of my clients, I came across a script in which I had to introduce a scalar User-Defined Function in the SELECT statement. The SELECT used to return around 750K records. However, after introducing the UDF, the row count significantly increased to 826K. There were no other changes made […]

(5)

You rated this post out of 5. Change rating

2019-10-14

5,151 reads

Technical Article

Understand when to use user-defined functions in SQL Server

  • Article

In the simplest terms, a user-defined function (UDF) in SQL Server is a programming construct that accepts parameters, does work that typically makes use of the accepted parameters, and returns a type of result. This article will cover two types of UDFs: table-valued and scalar-valued.

(2)

You rated this post out of 5. Change rating

2007-12-12

3,922 reads

SQLServerCentral Article

Complex Computed Columns

  • Article

Computed columns in SQL Server 2000 allow you to have a calculated value available easily in a query. However by using a function instead of a simple formula you can build some very interesting solutions. New author Tim Chapman brings us a look at this technique.

(4)

You rated this post out of 5. Change rating

2006-05-09

21,717 reads

Blogs

Narrow Task Decomposition in AI Pipeline Agents

By

A nightly load into sales_fact fails. Ask an orchestrating agent to break down the...

Car Update: August 2026

By

It’s been some time since I provided a car update, so I decided to...

Microsoft Fabric OneLake Shortcuts: When to Use Them and When Not To

By

An architecture scenario Imagine separate Sales, Finance, Shared Data, and Executive Analytics workspaces. Sales...

Read the latest Blogs

Forums

Searching for my own posts

By pietlinden

I have a really stupid question... Is there an easy way to search for...

How to Work with On-Premises AI Models to Generate T-SQL Code

By Daniel Calbimonte

Comments posted to this topic are about the item How to Work with On-Premises...

Escaping Strings

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Escaping Strings

Visit the forum

Question of the Day

Escaping Strings

The STRING_ESCAPE() function requires 2 parameters in SQL Server 2025. The first is a string of text and the second is the type of escape rules being used. What are the options for the second parameter?

See possible answers