Exploring Query Plans in SQL
SQL Server keeps the most-used execution plans in cache, so it doesn't need to recompile the same queries every time. How can we benefit from this to find potential performance problems in execution plans?
Data Lakes
An interesting new paradigm popped up in the news this week: the data lake. It examines data as a model for organizational architectures.
SQL Server PCI DSS Security Patching Checklist
PCI DSS has strict requirements about implementing security updates and using only applications which are supported by the vendors. How do you create a patching policy for SQL Servers?
Multiple Backup Files
This Friday Steve Jones looks at your backup system and wonders how many people use striped backups.
Backing up your SQL Server to Amazon's Cloud in Three Easy Steps
John Grover explains how to set up Amazon S3 storage, install and configure the Amazon PowerShell module, and set up a Maintenance plan using SQL native backups and PowerShell.
Two Days Off
Verizon is taking their cloud service offline for maintenance for two days. Steve Jones doesn't think that sounds good.
Archiving Hierarchical, Deleted Transaction Using XML
When you delete a business transaction from the database, there are times when you might want to keep a record of the data for posterity. In this article, Dwain Camps looks at a tidy means of doing just that.
Test Your Situation
One of the important things is to be able to recover your environment. That doesn't mean you need to know everything about SQL Server and potential disasters, but you should know their affect on your situation.
Importance of Statistics and How It Works in SQL Server – Part 1
SQL Server Query Optimizer uses statistical information to estimate the cardinality in a query result. This enables the SQL Server Query Optimizer to create a high-quality query execution plan. Read on to learn how to use statistics and why it’s needed.
Recovering from Bad Deployments
When you deploy software, what do you do if things don't go well? Steve Jones talks about a few options you might have.
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