The Stubborn DBA
Today we have a guest editorial from Phil Factor. Phil wonders why so many people in technology can be stubborn. Are you a stubborn DBA?
Constraints and the Test-Driven Database
Bad data always seems to appear when, and where, one least expects it. Sam explains the great value of a defensive approach based on constraints to any team that is developing an application in which the data has to be exactly right, and where bad data could cause consequential severe financial damage. It is perhaps better seen as creating a test-driven database.
TSQL Challenge 73 - Implement Word Wrapping in TSQL
The challenge is to wrap the text by specified position.
Read-only Data
Today's poll looks at read only data and how you handle the backup and recovery of this data.
Understanding and Using APPLY (Part 1)
The first of a two-part series of articles examining the APPLY operator. Learn the basics of how this operator works and how it can help you solve some tricky problems.
T-SQL Development, or: How I Learned to Stop Worrying and Love Word
Microsoft Office Word is useful. There, I have confessed it, it's useful to me while I am working with TSQL. It's possibly only the search and replace function that I like but it's wrapped in Word so I have to take it like that. I use it a lot to help me capture the results of a stored procedure.
Are Auto-Updates Good?
Internet Explorer is going to get automatic updates soon and Steve Jones thinks it's a mixed blessing.
ETL Magic with SSIS – Part I
The first part of two parts of a paper discussion the implementation of a "real-world" ETL example using SSIS.
Raw Materials - Decisions, Decisions
Centuries ago, the philosopher Leibniz had a dream that all decisions could be made by machine. Today, his vision comes to life, more or less.
Using bit columns with NULLs when three options exist in SQL Server
Frequently surveys ask yes/no questions and use a bit datatype. What are the effects of allowing this column to be NULL in a SQL Server table? Check out this tip to learn more.
Blogs
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...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
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