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

ETL Modularity

Imagine for a moment that you’ve built a software thing. In fact, we’ll call it Thing. You put a lot...

2016-07-18 (first published: )

2,087 reads

Blog Post

Bad Data Can Kill

Bad data can kill. Literally. I’m not talking about the impact of bad data on the bottom line of business,...

2016-05-31 (first published: )

1,953 reads

Blog Post

Refocus

Three years ago, I left the ranks of full-time employment to become an independent consultant. At the same time, I...

2016-05-04

457 reads

Blog Post

ETL Auditing

It happens far too often: Once an ETL process has been tested and executes successfully, there are no further checks...

2016-03-29 (first published: )

2,289 reads

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Blogs

Who’s the Winningest Coach (with AI Help)

By

I was listening to the radio the other day and the hosts were discussing...

Learning from Mistakes: T-SQL Tuesday #194

By

We’re a week late, once again my fault. I was still coming out of...

Stupid Things I Did With AI: ASCII Art

By

I ran across this article recently (https://www.gatesnotes.com/meet-bill/source-code/reader/microsoft-original-source-code) and it has a great opening piece...

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Forums

Learning From Breakage

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Learning From Breakage

Python in Action to Auto-Generate an Optimized PostgreSQL Index Strategy

By sabyda

Comments posted to this topic are about the item Python in Action to Auto-Generate...

Adding and Dropping Columns I

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Adding and Dropping Columns I

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Question of the Day

Adding and Dropping Columns I

I have this table in my SQL Server 2022 database: 

CREATE TABLE [dbo].[CityList]
(
[CityNameID] [int] NOT NULL IDENTITY(1, 1),
[CityName] [varchar] (30) COLLATE SQL_Latin1_General_CP1_CI_AS NULL
) ON [PRIMARY]
GO
I decide to add two new columns for the StateProvince and Country. What code should I use?

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