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

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: )

348 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: )

286 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

10 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: )

438 reads

Blogs

SQL Saturday Boston Slides and Code

By

Thanks to everyone who attended my sessions today at SQL Saturday Boston 2025. I’ve...

Scaling SQL Server 2025 Vector Search with Load-Balanced Ollama Embeddings

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SQL Server 2025 introduces native support for vector data types and external AI models....

Advice I Like: Fear and Imagination

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Fear is fueled by a lack of imagination. The antidote to fear is not...

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Question of the Day

Checking Identities

The DBCC CHECKIDENT command is used when working with identity values. I have a table with 10 rows in it that looks like this:

TravelLogID CityID  StartDate   EndDate
1           1       2025-01-11  2025-01-16
2           2       2025-01-11  2025-01-16
3           3       2025-01-11  2025-01-16
4           4       2025-01-11  2025-01-16
5           5       2025-01-11  2025-01-16
6           6       2025-01-11  2025-01-16
7           7       2025-01-11  2025-01-16
8           8       2025-01-11  2025-01-16
9           9       2025-01-11  2025-01-16
10          10      2025-01-11  2025-01-16
The docs for DBCC CHECKIDENT say this if I run with only the table parameter: "If the current identity value for a table is less than the maximum identity value stored in the identity column, it is reset using the maximum value in the identity column. " I run this code:
DELETE dbo.TravelLog WHERE TravelLogID >= 9
GO
DBCC CHECKIDENT(TravelLog, RESEED)
GO
INSERT dbo.TravelLog
(
    CityID,
    StartDate,
    EndDate
)
VALUES
(4, '2025-09-14', '2025-09-17')
GO
What is the identity value for the new row inserted by the insert statement above?

See possible answers