Real-time moving averages for IoT with R
Computing an average over all your data is easy, but what if your data arrives incrementally and you need to be able to compute real-time averages on the fly? That's what we are going to look at.
SQL Server Security Part 2
In part one Chris Kempster covered a variety of security recommendations primarily for production systems. In Part two of this series he continues to explore security at a variety of levels where you may not realize you are vulnerable.
Database Build Blockers: Cross-Server Database Dependencies
Phil Factor demonstrates how to tackle builds when databases make cross-server references. The technique uses synonyms to represent the remote objects, and local 'stub' objects to overcome the problems caused by 'missing references' when building the individual objects.
Entity Framework Core Raw SQL Queries Examples
In this article we look at how to run SQL Server queries with Entity Framework Core using the DbSet.FromSql method, parameterized queries, stored procedures and using the Database.ExecuteSqlCommand property.
Getting a List of the Striped Backup Files
If you have a list of striped backup files, how can you find the latest backup set? Steve Jones uses dbatools and PowerShell to automate this process.
SQL Server 2019 Graph Database and SHORTEST_PATH
With SQL Server 2019 on the way, it’s time to begin learning about all the new features. In this article, Dennes Torres demonstrates how to use the new SHORTEST_PATH function that is part of the Graph Database feature.
You just Build It don’t you? 12 Common Database Build Blockers
Database deployments, like the sheep of exasperated hill-farmers, often find strange and unexpected ways to self-destruct. Phil Factor describes the most common things that can go wrong, and how a reliable automated database build process can prevent messy accidents.
Searching for Answers Inside
Learning how an organization, or even just a codebase, works can be a challenge for new employees.
Azure Data Factory If Condition Activity
In this tip we look at how to use an If Condition activity in an Azure Data Factory pipeline for conditional logic.
Blogs
AI Helps Me with My Sloppiness
By Steve Jones
I type fairly well. Well, I type fast, but I do wear out a...
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
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