Bad Query Performance Tips Rebutted
Once upon a time, someone, somewhere, wrote a list of bad query performance tips and they’ve been copied all over...
2018-11-20 (first published: 2018-11-12)
3,238 reads
The Scary DBA
What Is Happening, Right Now, At the PASS Summit?
Honestly, that’s a very hard question to answer. I mean, first of all, you can look at the schedule. There...
2018-11-05
207 reads
Explicitly Drop Temporary Tables Or Wait For Cleanup?
I was recently asked if we are going to see performance differences if we explicitly drop temporary tables. I couldn’t...
2018-11-07 (first published: 2018-10-29)
3,992 reads
Why Did a Plan Get Removed From Cache?
I was recently asked if we could tell why a plan was removed from cache. If you read this blog,...
2018-10-26 (first published: 2018-10-22)
1,904 reads
Using Extended Events to Capture Implicit Conversions
Using the appropriate data type to avoid conversions or implicit conversions is a fundamental approach to good T-SQL coding practices....
2018-10-24 (first published: 2018-10-15)
1,807 reads
Database Fundamentals #19: JOINS
The last Database Fundamentals post introduced the SELECT and FROM commands. We’re going to start using JOIN operations shortly, but...
2018-10-22 (first published: 2018-10-08)
2,968 reads
Adaptive Joins and Join Hints
At a recent all-day seminar on query performance tuning I was asked a question that I didn’t know the answer...
2018-10-10 (first published: 2018-10-01)
2,724 reads
Introducing Azure Data Studio
If you’re watching Microsoft Ignite or tracking the information coming out of it on social media, then you know that...
2018-10-02 (first published: 2018-09-24)
3,567 reads
Extended Events and Stored Procedure Parameter Values
One complaint I’ve received frequently is that you can’t see stored procedure parameter values in Extended Events. That is patently...
2018-09-24
502 reads
Databases and DevOps, It’s Not Just Me
Anyone who subscribes to my blog or my YouTube channel as well as anyone following me on social media knows...
2018-09-19
317 reads
Blogs
A New Word: Mauerbauertraurigkeit
By Steve Jones
mauerbauertraurigkeit – n. inexplicable urge to push people away, even close friends whose company...
Methodology for dealing with bad data in production
By Brian Kelley
Pinal Dave wrote up his methodology for what to do when you discover bad...
How to Provision an Azure SQL Database
Aside from spinning up a SQL Server instance container, the free Azure SQL Database...
Forums
Why SQL Server Database Attach fails and how to repair it
Comments posted to this topic are about the item Why SQL Server Database Attach...
Fixing P1 Queries
Comments posted to this topic are about the item Fixing P1 Queries
BIT_COUNT() IV
Comments posted to this topic are about the item BIT_COUNT() IV
Question of the Day
BIT_COUNT() IV
In SQL Server 2025, I run this code:
select bit_count('A')
What is returned? See possible answers