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: )

343 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

The Book of Redgate: We Value Teams

By

This value is something that I still hear today: our best work is done...

Troubleshooting TempDB Log Full Errors When SSMS Won’t Connect

By

Have you ever received the dreaded error from SQL Server that the TempDB log...

Accelerating AI with Confidence: Why Microsoft Purview is Key to Responsible Innovation

By

Artificial intelligence is no longer a distant concept. It is here, embedded in the...

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Forums

Planning for tomorrow, today - database migrations

By John Martin

Comments posted to this topic are about the item Planning for tomorrow, today -...

Bottlenecks on SQL Server performance

By runarlan

We have a BI-application that connects to input tables on a SQL Server 2022...

Is there some good routines for updating SQL Server database objects with GitHub

By Rod at work

At work we've been getting better at writing what's known as GitHub Actions (workflows,...

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Question of the Day

The Tightly Linked View

I try to run this code on SQL Server 2022. All the objects exist in the database.

CREATE OR ALTER VIEW OrderShipping
AS
SELECT cl.CityNameID,
       cl.CityName,
       o.OrderID,
       o.Customer,
       o.OrderDate,
       o.CustomerID,
       o.cityId
 FROM dbo.CityList AS cl
 INNER JOIN dbo.[Order] AS o ON o.cityId = cl.CityNameID
GO
CREATE OR ALTER FUNCTION GetShipCityForOrder
(
    @OrderID INT
)
RETURNS VARCHAR(50)
WITH SCHEMABINDING
AS
BEGIN
    DECLARE @city VARCHAR(50);
    SELECT @city = os.CityName
    FROM dbo.OrderShipping AS os
    WHERE os.OrderID = @OrderID;
    RETURN @city;
END;
go
What is the result?

See possible answers