Statistics and the Ascending Key Problem
I’ve mentioned previously how not having up to date statistics can cause problems in query performance. This post looks at something called the Ascending Key Problem which can badly...
2021-02-09
175 reads
I’ve mentioned previously how not having up to date statistics can cause problems in query performance. This post looks at something called the Ascending Key Problem which can badly...
2021-02-09
175 reads
Statistics are vitally important in allowing SQL Server to find the most efficient way to execute your queries. In this post we learn more about them, what they are...
2021-03-24 (first published: 2021-02-01)
391 reads
When you don't have statistics, what does SQL use to calculate the estimated number of rows?
2021-02-04 (first published: 2021-01-26)
287 reads
Statistics objects are important for allowing the SQL Server Optimizer to make good estimates and form efficient execution plans. Related to that it's useful for us to understand when...
2021-01-25 (first published: 2021-01-18)
486 reads
Query Store is a configuration that is enabled per database, and the plans and stats for queries executed in that database are stored in the database itself. So what...
2021-01-18 (first published: 2021-01-11)
463 reads
Script to identify the most expensive queries on your database server using the Query Store DMVs. This allows you to look at data from a specific time frame, as...
2021-01-11 (first published: 2021-01-04)
664 reads
Here's a SQL Puzzle for the festive period. 2020 has been a year of many things but amongst it all, it has been the year of chess. The combined...
2020-12-24 (first published: 2020-12-15)
520 reads
Introduced with SQL 2016, Query Store was, probably without doubt, the most anticipated and talked out new feature. In this post we'll just take a brief look at it,...
2020-12-21 (first published: 2020-12-14)
908 reads
Recently Microsoft quietly let us know that TDE (Transparent Data Encryption) will be available in the Standard Edition of SQL Server 2019. If you don’t follow SQL topics on...
2019-11-12 (first published: 2019-11-05)
6,995 reads
No, the answer isn’t because you’re a DBA. This isn’t a technical post about databases, but rather a discussion of a statistical paradox that I read about recently. Statistics...
2019-10-01
33 reads
By Steve Jones
I was working with a customer and discussing how to do error handling. This...
By DataOnWheels
The 14th annual Ability Summit is a global event that I attended a few...
By Steve Jones
UPDATE: This moved to Apr 9 Join me Tuesday, Apr 9 for a webinar,...
Someone landed a PowerBI mess in my lap, and near as I can tell,...
I want to have a a secondary ready-only database available for reporting, which is...
How does the Resource database in SQL Server 2022 get backed up?
See possible answers