How to get monthly YTD data
This article presents an easy method to get YTD data grouped by months in T-SQL.
Physical Database Design Consideration
There are lots of things to think about when you design a physical database. What data types should I use? What column is appropriate for the primary key? Are there particular indexes that I should use to improve performance? How should I implement data integrity rules? This list goes on and on. In this article Greg Larsen will be exploring different physical database design elements.
Jiggly Code
There should be some method to your madness when fixing code. At least, that's what Linus Torvalds thinks and Steve Jones agrees.
Testing times
Databases are unique in IT that they are singularly resistant to 'best practice' advice. Any such advice can never be anything other than a starting position for tests in your own environment.
TSQL Challenge 74 - Find the expiring quantity of material
The challenge is to create a query for a report that show expiring material
Using the MERGE Statement in SSIS Via a Stored Procedure
Step-by-step instructions how to build a stored procedure that dynamically constructs and executes a merge statement within SSIS.
Tom LaRock's SQL Server Howlers
In this next article in our series where well-known SQL Server people write about their favorite SQL Server Howlers, we asked Tom Larock for his top five common misunderstandings about how SQL Server works that end in tears, and plaintive forum questions.
Index Internal Structure in SQL Server: Stairway to SQL Server Indexes Level 10
A detailed look the B-Tree structure – Leaf level and non-leaf level.
Sub query expressions vs. Joins.
Do sub query expressions introduce a performance penalty on retrieving large data sets?
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...
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