TSQL Challenge 75 - Find the Episode and Sequence based on interval
The challenge is to find the Episode and Sequence based on interval.
Great SQL Server Debates: Buffer Cache Hit Ratio
One of the more popular counters used by DBAs to monitor SQL Server performance, the Buffer Cache Hit Ratio, is useless as a predictor of imminent performance problems. Worse, it can be misleading. Jonathan Kehayias demonstrates this convincingly with some simple tests.
Do you know your getdate()?
This article takes a closer look at SQL Server getdate() and sysdatetime() functions.
Stairway to SQL Server Replication - Level 7: Merge Replication – Subscription
This level of the Stairway will cover the details of SQL Server transactional and merge replication, from understanding the basic terminology and methodology of setting up replication, to describing how it works and how the basic replication processes can be monitored.
A Computed Column Defined with a User-Defined Function Might Impact Query Performance
A benefit of using computed columns is that they can save developers from having to write calculation logic at the application layer; at the table level, the application can simply reference the computed column. In addition, performance can be improved by persisting a computed column and building an index on it.
Old Dog, New Tricks
Steve Jones learns a new trick working with T-SQL, and is surprised how easy it is. He recommends you work on updating your skills over time as well.
Post a Twitter Status Update using T-SQL
Learn how to post a Twitter status update with 5 lines of T-SQL using a third party library.
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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...
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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