It Depends
It depends. The mantra of many DBAs and others in IT. Steve Jones reminds us why it applies.
SSIS Variable and Parameter Analysis
Use T-SQL to analyse the usage of all variables and parameters in an SSIS project, including the identification of any unused variables and parameters.
How to Find the Estimation Cost for a Query
Discover how to estimate the cost of a query. Read on to see an example of how to extract the Estimated Cost for execution plans stored in the procedure cache.
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DAX for SQL Folks: Part III - DAX Calculations
Introduction In response to my approach in the pop...
Open Source is Not a Career Path
A reprint from the early days of SQLServerCentral as Steve is on vacation. Here is Steve Jones' Open Source Musings from February 3, 2005.
Improve Row Count Estimates for Table Variables without Changing Code
Table variables can cause performance issues with joins when they contain a large number of rows. In SQL Server 2019, Microsoft has improved how the optimizer works with table variables which can improve performance without making changes to your code. In this article, Greg Larsen explains how this feature works and if it really does make a difference.
Testing SQL Server Stored Procedures and Functions with SQL Data Compare
Phil Factor demonstrates a cunning way to test stored procedures or functions, such as after refactoring, by storing the 'before' and 'after' results in views and then using SQL Data Compare to spot any discrepancies.
Evaluating Life at Work
It can be hard to evaluate your career and job situation, but Steve has some ideas today.
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