In this video, we go over the concept of DISTKEY and SORTKEY. If you're a MySQL or PostgreSQL user who is used to indexes, these two Redshift concepts might seem a bit strange.
Redshift's DISTKEY and SORTKEY are powerful tools that are easy to use. By using these options, you can avoid issues that can be caused by Redshift's compression. Such issues include slow queries, wrong results, missing results, and more.
In fact, the way Redshift uses them, you'll probably never have a need for a fully-fledged index. Indexes are great, but they have a cost, so it's important to understand when indexes are appropriate for your workload.
In this video, we go over the basics of DISTKEY and SORTKEY by looking at a basic example.
Dataset used in the video - docs.aws.amazon.com/redshift/...
Redshift Whitepaper - docs.aws.amazon.com/whitepape...
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23 ноя 2021
