ETL Antipattern: Ignore the Logging
In my last ETL Antipatterns post, I wrote about the unexciting but very necessary work of documenting ETL processes. The logging of ETL operations is just as (un)captivating as...
2020-12-21
6 reads
Tim Mitchell
- Interests: SQL Server, Data Warehousing, ETL, Data Architecture, Python, Dbt
- Website: https://www.TimMitchell.net
- Bluesky: tmitch.net
ETL Antipattern: Skipping The Documentation
Documentation is an asset that is both loathed and loved. Creating technical and business documentation is often looked upon as a tedious chore, something that really ought to be...
2020-12-20
14 reads
ETL Antipattern: Skipping The Documentation
Documentation is an asset that is both loathed and loved. Creating technical and business documentation is often looked upon as a tedious chore, something that really ought to be...
2020-12-20
6 reads
ETL Antipattern: Load Processes that Don’t Scale
One of the most significant design considerations in ETL process development is the volume of data to be processed. Most ETL processes have time constraints that require them to...
2020-12-19
261 reads
ETL Antipattern: Load Processes that Don’t Scale
One of the most significant design considerations in ETL process development is the volume of data to be processed. Most ETL processes have time constraints that require them to...
2020-12-19
6 reads
ETL Antipattern: Failure to Test and Validate
“If it compiles, it works.” – An unemployed developer Building ETL processes is quite easy. Building ETL processes that deliver accurate results as quickly as possible is substantially more...
2020-12-18
14 reads
ETL Antipattern: Failure to Test and Validate
“If it compiles, it works.” – An unemployed developer Building ETL processes is quite easy. Building ETL processes that deliver accurate results as quickly as possible is substantially more...
2020-12-18
7 reads
ETL Antipattern: Failing to Treat ETL Logic as Source Code
In most data projects, building the extract-transform-load (ETL) logic takes a significant amount of time. Enterprise ETL processes must do several things well: retrieve enough data to satisfy the...
2020-12-17
19 reads
ETL Antipattern: Failing to Treat ETL Logic as Source Code
In most data projects, building the extract-transform-load (ETL) logic takes a significant amount of time. Enterprise ETL processes must do several things well: retrieve enough data to satisfy the...
2020-12-17
10 reads
ETL Antipattern: No Error Handling Logic
I usually avoid talking about technology in absolutes, but here’s one that I can share without reservation: On a long enough timeline, every single ETL process will eventually fail....
2020-12-16
15 reads
Blogs
AI: Blog a Day – Day 6: Embeddings – How AI Understands
By Vinay Thakur
Continuing from Day 5 where we covered notebooks, HuggingFace and fine tuning AI now...
The Book of Redgate: Mistakes
By Steve Jones
This is kind of a funny page to look at. The next page has...
ADF Pipeline Debugging Fails with BadRequest – The Sequel
A while ago I blogged about a use case where a pipeline fails during...
Forums
Dynamic Unpivot
I have a table I didn't design that has tons of repeating groups in...
Writing as an Art and a Job
Comments posted to this topic are about the item Writing as an Art and...
String Similarity II
Comments posted to this topic are about the item String Similarity II
Question of the Day
String Similarity II
What is the range for the result from the EDIT_DISTANCE_SIMILARITY() function in SQL Server 2025?
See possible answers