Working with Perfmon CSV logs in Powershell
When all you have is Powershell and perfmon logs, here's a way you can use them together to perform some analysis.
Data Compression Double Take
A lot has been written about the potential performance benefits of SQL Server data compression; but hard performance data? Not so much.
The Road to Professional Database Development: Set-Based Thinking
Under the pseudonym of 'SwePeso', Peter Larsson is famous on SQL forums for the amazing performance he can get from SQL. How does he do it? In the first of a series of articles, Peter explains his secrets.
Eliminating Duplicate Rows using The PARTITION BY clause
The Partition clause in the Row_Number() Over() function is a quick tool for eliminating duplicate rows.
High Availability Upgrades
Today Steve Jones has a poll about the new AlwaysOn feature in SQL Server 2012. Is it worth the upgrade for your company?
Stairway to SQL Server Replication - Level 8: Merge Replication – How it works
How merge replication works, including the impact on the published database. The merge agent, different conflict situations and their resolutions are introduced.
Exploring SSIS Architecture and Execution History Through Scripting
When you are using SSIS, there soon comes a time when you are confronted with having to do a tricky task such as searching for particular connection strings in all your SSIS packages, or checking the execution history of scheduled SSIS jobs. You can do this type of work effectively in T-SQL as Feodor Georgiev explains.
Change the port number for connections to SQL Server
How to change the port number for connections to SQL Server.
Data Compression Double Take
A lot has been written about the potential performance benefits of SQL Server data compression; but hard performance data? Not so much.
Blogs
AI Helps Me with My Sloppiness
By Steve Jones
I type fairly well. Well, I type fast, but I do wear out a...
WITH clause gets a 26ai boost!
By way of background, a while back I did video called “My New Favourite...
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Cognitive Coverage
Comments posted to this topic are about the item Cognitive Coverage
Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers