Which Columns Are Looked Up?
A common issue in performance is the lookup, key or RID, but the question frequently asked is, which columns are looked up? You need to know in order to...
2022-02-07 (first published: 2022-01-24)
444 reads
The Scary DBA
Two Clustered Indexes?
Everyone knows that you only get a single clustered index, right? Wouldn’t it be great though if you could have two clustered indexes? Well, you can. Sort of. Let’s...
2022-01-31 (first published: 2022-01-18)
450 reads
Why Is “WHERE 1=0” Slow?
I saw a question the other day, questioning why they’re creation of temporary tables was so slow. What they were doing was (a much more complicated version of) this:...
2022-01-24 (first published: 2022-01-10)
911 reads
Identifying Recompile Causes
Strictly speaking, a recompile isn’t really a performance tuning problem. In fact, a lot of time, recompiles are desired because they reflect changes in statistics which are likely to...
2022-01-12 (first published: 2022-01-03)
284 reads
Get SQL Server 2022 Now: It’s Called Azure
If you’re like me, your palms went into a cold sweat to get your grubby fingers on the bits for SQL Server 2022 a few nanoseconds after you heard...
2021-11-29
66 reads
PASS Data Community Summit 2021: I’m Excited!
I sincerely hope this isn’t the first time you’re hearing about the Pass Data Community Summit that’s coming up in just a few weeks on November 8-12, 2021. But,...
2021-10-15 (first published: 2021-10-04)
244 reads
PASS Data Community Summit 2021: I’m Excited!
I sincerely hope this isn’t the first time you’re hearing about the Pass Data Community Summit that’s coming up in just a few weeks on November 8-12, 2021. But,...
2021-10-04
16 reads
Login Timeouts
I was recently approached at work about a company that was seeing tons of timeouts in SQL Server. I was asked how to troubleshoot this. There are lots of...
2021-10-06 (first published: 2021-09-27)
580 reads
Login Timeouts
I was recently approached at work about a company that was seeing tons of timeouts in SQL Server. I was asked how to troubleshoot this. There are lots of...
2021-09-27
7 reads
Containers: A Short Rant
I find myself doing more and more work with containers. Yet, I also find that a lot of people seem to be resistant to the concept. I’m always surprised...
2021-09-29 (first published: 2021-09-20)
484 reads
Blogs
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...
Claude finds two cryptographic weaknesses (but the sky isn’t falling)
By Brian Kelley
If you haven't seen the announcement, Anthropic was able to utilize Claude (Mythos Preview)...
Forums
Kontak BCA KCP Semanggi Telp:08218154392
WA CS (08218154392) Wisma GKBI, Jl. Jenderal Sudirman No.28 Suite G 01, RT.14/RW.1, Bend....
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
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