Jeff Moden

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

SQLServerCentral Article

GENERATE_SERIES() Breaks Minimal Logging

tl;dr The title says it all. Prologue One of the keys to my personal learning is that, very early in my database career, I taught myself how to make lot’s of rows of Random Constrained Data in a comparatively short time. With the help of a few good folks over time, the method has been […]

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2023-09-18

3,540 reads

SQLServerCentral Article

Combine DATE and TIME to DATETIME2 in SQL Server

The most common method on the internet for combining DATE and TIME columns in SQL Server is incorrect. This article demonstrates why that and other methods are incorrect and two lesser known high performance methods that produce correct results even for the "edge cases".

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2023-08-07

12,446 reads

SQLServerCentral Article

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2022-07-13

23,347 reads

SQLServerCentral Article

How much will it cost or save to rebuild that index? (SQL Oolie)

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.

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2021-05-28 (first published: )

9,839 reads

SQLServerCentral Article

Some T-SQL INSERTs DO Follow the Fill Factor! (SQL Oolie)

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 […]

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2019-08-08

6,103 reads

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Question of the Day

Inserting Transaction Marks

When is a transaction mark first inserted into the msdb.dbo.logmarkhistory table?

See possible answers