What's the true and permanent cost of lowering the Fill Factor of an index in SQL Server? It's a lot more than many people think. 9 year SQL Server MVP veteran, Jeff Moden, demonstrates how to calculate the extra space that will be used by lowering the Fill Factor and saved by increasing it.
2021-05-28 (first published: 2019-09-03)
10,067 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
6,248 reads
Revisiting his very popular article on the running total and ordinal rank problems, MVP Jeff Moden brings us a detailed analysis of how you might want to implement a solution in T-SQL.
2019-05-22 (first published: 2009-11-10)
47,544 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)
16,362 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)
27,773 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)
24,426 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)
37,636 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)
61,982 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)
41,145 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)
26,920 reads
By Kevin3NF
The Source Control Dilemma Every DBA has been there. Trying to keep track of...
By Steve Jones
We recently published an article on CHOOSE at SQL Server Central. I thought it...
Introduction Treating your data catalog like a “data museum”—a static collection where information quietly...
If I have Read replica (in Azure SQL MI), can it be used as...
Hello, I'm tasked with setting up a 2 node server cluster that will host...
Comments posted to this topic are about the item Microsoft Power BI Performance Best...
What is returned from this code in SQL Server 2022?
DECLARE @value INT = NULL; SELECT ISNULL(@value, 100.5) AS Result;See possible answers