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Rebecca Vickery
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According to a recent report from Burning Glass SQL was the most requested tech skill in open jobs posted between February and March 2020. Businesses are collecting ever-increasing volumes of data and the question of how to derive value from this asset is becoming something of a business obsession.
We’re entering a new world in which data may be more important than software.” , Tim O’Reilly, founder, O’Reilly Media
The vast majority of enterprise data is still stored as rows and columns in databases and SQL (Structured Query Language) is the language that enables a business to extract, transform and load this data. SQL is, therefore, the very foundation on which any value-adding data products are developed.
I am in the middle of running an online SQL course for complete beginners. The program that I have put together uses existing free online resources that I coach my students through via weekly video calls. In this article, I wanted to share with you the five best free resources that we have used so far to learn SQL during the course.
sqlbolt.com
SQLBolt is a completely free fully interactive introductory course. All SQL basics are covered including writing queries, filtering, joins, aggregations in addition to creating, updating and deleting tables.
There are practical exercises to complete after each concept is introduced which help to solidify your understanding of the topics covered.
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Towards Data Science
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