Peter Skoglund

My name is Peter Skoglund. I have twenty+ years experience in IT and I have work with SQL Server since version SQL Server 7.0. I work as a development DBA and spend all my days with development and database administration. My quote is "The first step to improvement is to have the gut to question".

Truncate Table Pitfalls

 Truncate Table Pitfalls
Truncating a table can be gloriously fast—and spectacularly dangerous when used carelessly. If you want the speed without the face-palm moments, here’s a practical, interview-ready guide to...

2025-10-29 (first published: )

952 reads

SELECT *

SELECT * feels convenient, but in SQL Server it bloats I/O, burns network bandwidth, blocks covering-index usage, and makes code brittle when schemas change. Specify only the columns you...

2025-10-02

77 reads

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Question of the Day

Finding Trailing Spaces

I have some data in a SQL Server 2025 database. It looks like this for the dbo.Customer table:

CustomerID CustomerName PreferredName
1          Steve        Steve               
2          Andy         Andy               
3          Brian        Brian               
4          Allan        Allan               
5          Devin        Devin               
6          Steve        Steve               
7          Sally        Sally
I want to detect which names have a single trailing space. The CustomerName is a varchar() and the PreferredName is a CHAR(). Does this query detect the problem rows?
SELECT 
       CustomerID,
       CustomerName,
       PreferredName
FROM Customer
WHERE CustomerName <> RTRIM(CustomerName)
OR PreferredName <> RTRIM(PreferredName);

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