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

Comparing SSIS and Azure Data Factory

For the better part of 15 years, SQL Server Integration Services (SSIS) has been the go-to enterprise extract-transform-load (ETL) tool for shops running on Microsoft SQL Server. More recently,...

2020-07-28 (first published: )

718 reads

Blog Post

SSIS Parameters

SSIS parameters help to ease the process of passing runtime values to SSIS packages. For values that can change over time, using parameters in SSIS is an ideal means...

2020-07-14 (first published: )

477 reads

Blogs

A New Word: Lackout

By

lackout – n. the sudden awareness that you’re finally over someone, noticing that the...

Delta Lake over Spark Connect

By

All Spark Connect Posts I have just finished an update for the spark connect dotnet...

Introducing FabricTools (PowerShell module)

By

🔍 The Challenge: DevOps for Microsoft Fabric In the world of Microsoft Fabric, DevOps...

Read the latest Blogs

Forums

Merge techniques

By purushotham.k9

In Azure SQL DB, i want to merge records from the staging table to...

SSRS error: The Value for the image 'Image1' has a constant value...

By sgmunson

Full error message: SSRS error: The Value for the image 'Image1' has a constant...

XML_COMPRESSION for existing tables

By zoggling

We are in the process of upgrading to SQL Server 2022 and would like...

Visit the forum

Question of the Day

Adding Defaults

I have a table, called dbo.logger, in SQL Server 2022. I decide to add two new columns to this table with this code.

ALTER TABLE dbo.logger ADD CreateDate DATETIME CONSTRAINT dfGetDate DEFAULT GETDATE()
GO
ALTER TABLE dbo.logger ADD ModifyDate DATETIME DEFAULT dfGetDate
GO
What happens when I run these two batches?

See possible answers