SQLServerCentral Article

Parallel Processing of Large Volume ETL Jobs

ETL processing, generally involves copying/moving, transforming, cleaning the records/transactions from one or multiple sources. Most of the batch processing or warehousing projects involve such data processing in millions on daily/weekly basis. Typically, there is a Staging area and production area. Records are cleaned, transformed, filtered and verified from staging to production area. This demands SQL Set theory based queries, parallel processing with multiple processors/CPU. The article focuses on need of SQL Set theory approach and parallel processing while processing large volume of ETL records using programming approach.

External Article

SQL Puzzle 7

After a gap of sixteen months, Lionel Clarke, the creator of the only 3-D maze game to be written in TSQL, returns with a new SQL puzzle. It is very simple. You have to move as much of the data as you can from the source tables to the destination tables.

Blogs

Why your data still can’t answer a simple question 

By

Every organization I talk to has the same problem dressed up in different clothes....

T-SQL Tuesday #197 Invitation – An impactful session or two from a conference

By

I am delighted to host this month’s T-SQL Tuesday invitation. If you are new...

Did You Really Name That Default?

By

Ten years (and a couple jobs) ago, I wrote about naming default constraints to...

Read the latest Blogs

Forums

The day-to-day pressures of a DBA team, and how we can work smarter with automation and AI

By Terry Jago

Comments posted to this topic are about the item The day-to-day pressures of a...

Using OPENJSON

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Using OPENJSON

Data Modeling with dbt for Visual Code: The Fabric Modern Data Platform

By John Miner

Comments posted to this topic are about the item Data Modeling with dbt for...

Visit the forum

Question of the Day

Using OPENJSON

I have some data in a table that looks like this: 

BeerID BeerName    brewer               beerdescription
1      Becks       Interbrew            Beck's is a German-style pilsner beer 
2      Fat Tire    New Belgium          Toasty malt, gentle sweetness, flash of fresh hop bitterness.
3      Mac n Jacks Mac & Jack's Brewery This beer erupts with a floral, hoppy taste
4      Alaskan Amber Alaskan Brewing     Alaskan Brewing Amber Ale is an "alt" style beer
8      Kirin       Kirin Brewing         Kirin Ichiban is a Lager-type beer
If I run this, what is returned? 
select t1.key
    from openjson((select t.* FROM Beer AS t for json path)) t1

See possible answers