Jeff Moden

  • Interests: SQL. When Im not having fun with that, then SQL. ;-)

SQLServerCentral Editorial

What's in your CLR?

For today's Friday poll we have a guest editorial from Jeff Moden. The head of the anti-RBAR alliance has spent a lot of time trying to help others write better T-SQL and solve their problems with code that performs well. However this Friday Jeff asks about the CLR and how you are using it, or not using it, in the real world.

3.14 (7)

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2017-08-11 (first published: )

717 reads

SQLServerCentral Article

A Simple Formula to Calculate the ISO Week Number

He admits it wasn't his idea but his head sure wishes it was. SQL Server MVP Jeff Moden explains a wonderful, super simple, very high performance formula that will calculate ISO Week Numbers. If you're "stuck" with SQL Server 2005 or less, you're going to like this a whole lot!

4.89 (36)

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2015-10-23 (first published: )

35,675 reads

SQLServerCentral Article

Calculating Duration Using DATETIME Start and End Dates (SQL Spackle)

It's an old problem with a solution that's nearly as old. SQL Server MVP Jeff Moden shows us the old trick mixed with a slick trick to format the duration as extended hours, minutes, seconds, and milliseconds.

4.84 (50)

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2015-04-03 (first published: )

58,877 reads

SQLServerCentral Article

Hierarchies on Steroids #1: Convert an Adjacency List to Nested Sets

SQL Server MVP Jeff Moden shows us a new very high performance method to convert an "Adjacency List" to “Nested Sets” on a million node hierarchy in less than a minute and 100,000 nodes in just seconds. Not surprisingly, the "steroids" come in a bottle labeled "Tally Table".

4.9 (63)

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2014-09-19 (first published: )

38,554 reads

SQLServerCentral Article

How to Make Scalar UDFs Run Faster (SQL Spackle)

It's a well known fact that Scalar UDFs are the stuff of performance nightmares in T-SQL. But are they really as bad as they say? SQL Server MVP Jeff Moden shows us that they might not really be as big a problem as you might think and what you can do when they actually are.

4.93 (102)

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2014-06-24 (first published: )

25,944 reads

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Using Table Hints in a Query

How many table hints can I include in a query?  

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