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.

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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.

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Question of the Day

Symmetric Key Encryption

If I run this statement in SQL Server 2025, how is the password encrypted?

CREATE SYMMETRIC KEY MySymmetricKey
WITH ALGORITHM = AES_256,
KEY_SOURCE = 'My secret key source passphrase',
IDENTITY_VALUE = 'My secret identity value'
ENCRYPTION BY PASSWORD = 'S&perS#cretP@ssword7';
GO

See possible answers