SQLBalls

Bradley Ball is a Sr. Azure FastTrack Customer Engineer for Microsoft, and former Data Platform MVP. During his IT career Bradley has spent 8 years working as a Defense contractor for clients such as the U.S. Army, The Executive Office of the President of the United States for the Obama Administration, and is the former Data Platform Practice Manager for Pragmatic Works Consulting, now 3Cloud. He has presented at SQL Saturdays, SSUG's, SQL Rally, DevConnections, SQLBits, SQL Live 360, and the PASS Summit. Bradley co-hosts the Tales From The Field YouTube show https://aka.ms/TftF/youtube , he can also be found blogging on https://www.SQLBalls.com

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Optimize For Unknown

Hello Dear Reader!  It's been a while.  I was working with a friend and we came across an interesting problem....

2016-12-21 (first published: )

3,326 reads

Optimize For Unknown

Hello Dear Reader!  It's been a while.  I was working with a friend and we came across an interesting problem.  They had a large amount of skewness/data skew.  This...

2016-12-05

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Question of the Day

The Range of Customers

I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC): 

orderid orderdate               customerid complete
3       2025-05-10 00:00:00.0002          1
21      2024-01-10 00:00:00.0003          1
15      2023-10-28 00:00:00.0004   1
13      2025-03-08 00:00:00.0006          1
11      2024-04-02 00:00:00.0007          1
If I run this query, how many rows are returned? 
SELECT *
 from dbo.OrderHeader
 where customerid between 3 and '6'

See possible answers