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

Secure Your Data Prep Area

I’ve been building ETL processes for many years, and I’ve learned two universal truths: data preparation is messy, and you must always secure your data prep area. A data...

2020-06-18

2 reads

Blog Post

Lessons from Iowa’s Caucus Debacle

Earlier this week, the state of Iowa held its caucuses to choose each political party’s nominee for November’s presidential election. Being the first state in each election cycle to...

2020-02-11 (first published: )

784 reads

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Blogs

Securing Kubernetes With External Secrets Operator on AWS

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Here’s a way to centralize management, rotate secrets conveniently without downtime, automate synchronization and...

Save Azure PostgreSQL Backup to Storage

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This may or may not be helpful in the long term, but since I’m...

The Book of Redgate: What’s Great about Redgate?

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“I’m sick of hearing about Red Gate.” The first article in the book has...

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Forums

Dynamic T-SQL Script Parameterization Using Python

By omu

Comments posted to this topic are about the item Dynamic T-SQL Script Parameterization Using...

Collation related issues

By LearningDBA

I have read that the collation at the instance level cannot be changed. I...

getting started paas SSAS

By stan

hi our on prem STD implementation of SSAS currently occupies about 3.6 gig of...

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Question of the Day

Multiple Sequences

In SQL Server 2022, I run this code: 

CREATE SEQUENCE myseqtest START WITH 1 INCREMENT BY 1;
GO
CREATE TABLE NewMonthSales
  (SaleID    INT
  , SecondID int
 , saleyear  INT
 , salemonth TINYINT
 , currSales NUMERIC(10, 2));
GO
INSERT dbo.NewMonthSales
  (SaleID, SecondID, saleyear, salemonth, currSales)
SELECT
  NEXT VALUE FOR myseqtest
, NEXT VALUE FOR myseqtest
, ms.saleyear
, ms.salemonth
, ms.currMonthSales
FROM dbo.MonthSales AS ms;
GO
SELECT * FROM dbo.NewMonthSales AS nms
Assume the dbo.MonthSales table exists. If I run this, what happens?

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