Tim Mitchell

Tim Mitchell is a business intelligence consultant, author, and trainer. He has been building data solutions for over 20 years, and is a 13-time recipient of the Microsoft Data Platform MVP award (2010-2022). He is the founder and principal data architect at Tyleris Data Solutions.

Tim has spoken at international and local events including the SQL PASS Summit, SQLBits, SQL Connections, along with dozens of tech fests, code camps, and SQL Saturday events. He is the author of the book The SSIS Catalog: Install, Manage, Secure, and Monitor your Enterprise ETL Infrastructure, coauthor of the book SSIS Design Patterns, and is a contributing author on the charity book project MVP Deep Dives Vol 2.

You can visit his website and blog at TimMitchell.net or follow him on Bluesky at https://bsky.app/profile/tmitch.net.
  • Interests: SQL Server, Data Warehousing, ETL, Data Architecture, Python, Dbt

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Blog Post

Secure Your Data Prep Area

I’ve been building ETL processes for many years, and I’ve learned two universal truths: data preparation is messy, and you must always secure your data prep area. A data...

2020-06-18

2 reads

Blog Post

Lessons from Iowa’s Caucus Debacle

Earlier this week, the state of Iowa held its caucuses to choose each political party’s nominee for November’s presidential election. Being the first state in each election cycle to...

2020-02-11 (first published: )

785 reads

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Blogs

Better Trigger Design: #SQLNewBlogger

By

I had someone ask me about using triggers to detect changes in their tables....

SQL Server in the Cloud – Are DBAs Still Needed?

By

Things your cloud vendor may not tell you   Here’s a common theme I...

AZ-900: Microsoft Azure Fundamentals – The Ultimate Beginner’s Guide to Cloud Mastery

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In an era where cloud computing drives innovation, understanding its fundamentals is no longer...

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Forums

Dropping a PK constraint.

By stevec883

I will have to test this next week, but will not have a chance...

SQL - Conditional merge join

By SQL Bee

I want to add a condition in the joining columns part of the merge...

Is there a way to implement ROWS between logic?

By water490

Hi everyone SUM function has the option to select ROWS BETWEEN parameter to allow...

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Question of the Day

What is Between?

I have a table of products in SQL Server 2022. There are sequential items in the table with ProductIDs of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. If I run this code, how many rows are returned? 

SELECT *
FROM dbo.Products
WHERE ProductID
BETWEEN 4 AND 7;

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