Many people have published high performance, read-less, Inline Table Valued functions that use Itzik Ben-Gan's wonderful "Virtual Numbers Table" to replace WHILE loops and other forms of RBAR. This one is Jeff Moden's version.
2019-08-13 (first published: 2019-08-04)
8,506 reads
With origins from the world of “Submarine ‘Dolphin’ Qualification” questions, an “Oolie” is a difficult question to answer, or the knowledge or fact needed to answer such a question, that may or may not pertain to one's duties but tests one's knowledge of a system or process to the limit. Introduction Contrary to what many […]
2019-08-08
6,492 reads
Fill in another bit of your T-SQL knowledge about STR(). It right justifies, rounds, and controls the output width of columns. Sounds perfect but here's why you might not want to use it.
2019-04-26 (first published: 2010-12-15)
16,581 reads
Fill in another bit of your T-SQL knowledge by learning how to quickly group ranges of contiguous dates without RBAR.
2019-04-19 (first published: 2010-12-07)
28,348 reads
Fill in another bit of your T-SQL knowledge by learning how to sort a result set by the proper month order, but use the month name instead.
2019-04-12 (first published: 2010-11-15)
24,636 reads
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.
2017-08-11 (first published: 2009-12-11)
794 reads
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!
2015-10-23 (first published: 2013-04-08)
38,999 reads
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.
2015-04-03 (first published: 2014-01-16)
64,489 reads
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".
2014-09-19 (first published: 2012-11-13)
43,738 reads
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.
2014-06-24 (first published: 2012-08-01)
28,348 reads
In 1999 I released my first commercial software product. ShutOff 2000 was a Windows...
By Steve Jones
This month I want to look at a few of the things I’ve seen...
By SQLPals
SQL Server 2016 Has Reached End of Support. Now What? On...
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I have an Azure SQL Database Hyperscale Edition system running with a geo-replica enabled. Can I create a new geo-replica based on the current secondary geo-replica?
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