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

PASS Data Summit 2025 Recap

Last week, I attended the annual PASS Data Summit in Seattle. This was the fourth year of the event since Red Gate took over stewardship of PASS after that...

2025-12-05 (first published: )

25 reads

Blog Post

Using Python Code in SSIS

SQL Server Integration Services (SSIS) is a mature, proven tool for ETL orchestration and data movement. In recent years, Python has exploded in popularity as a data movement and...

2025-09-01 (first published: )

384 reads

Blog Post

My Office Setup

At the PASS Summit a few weeks ago, I had a great chat with some folks about our home office setups. More and more of us are working from...

2022-12-16 (first published: )

293 reads

Blog Post

Returning to PASS Summit

In just a couple of weeks, the PASS Summit will return to Seattle, Washington. This one will be extra special, since it’s going to be the first in-person Summit...

2022-10-31

15 reads

Blog Post

Creating a Generic SSRS Report

Creating useful reports is part art and part science. On one end of the spectrum, you have visually appealing and highly customized reports and dashboards that are truly works...

2022-04-13 (first published: )

444 reads

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Blogs

T-SQL Tuesday #198–Change Detection

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This month we have a new host, Meagan Longoria, who graciously agreed to help...

Redgate and Rome

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I’m at the UK Redgate office today, meeting with senior leaders in all areas...

Quick Tip: Check Most DTU Expensive Queries in Azure SQL Database

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Optimizing Azure SQL Database performance often begins with identifying the most resource-intensive queries. Understanding...

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Forums

Creating a JSON Document IV

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Creating a JSON Document IV

Restoring Azure Key Vault Keys and Validating SQL Server TDE Recovery: Level 7 of the Stairway to TDE

By VishnuGupthanSQLPowershellDBA

Comments posted to this topic are about the item Restoring Azure Key Vault Keys...

Permissions Removal When Changing Object Schema

By Brandie Tarvin

When the schema of an object is changed, SQL Server wipes out the previous...

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Question of the Day

Creating a JSON Document IV

I have this data in a table called dbo.NFLTeams 

TeamID  TeamName       City             YearEstablished
------  --------       ----             ---------------
1       Cowboys        Dallas           1960
2       Eagles         Philadelphia     1933
3       Packers        Green Bay        1919
4       Chiefs         Kansas City      1960
5       49ers          San Francisco    1946
6       Broncos        Denver           1960
7       Seahawks       Seattle          1976
8       Patriots       New England      1960
If I run this code, how many rows are returned? 
SELECT 
  YearEstablished,
  json_objectagg(city : TeamName)
FROM dbo.NFLTeams
GROUP BY  YearEstablished;

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