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SQL Tutorial: How To Write Better Queries

Karlijn Willems,
January 17, 2019 min read
Learn about anti-patterns, execution plans, time complexity, query tuning, and optimization in SQL.

Structured Query Language (SQL) is an indispensable skill in the data science industry and generally speaking, learning this skill is relatively straightforward. However, most forget that SQL isn’t just about writing queries, which is just the first step down the road. Ensuring that queries are performant or that they fit the context that you’re working in is a whole other thing.

That’s why this SQL tutorial will provide you with a small peek at some steps that you can go through to evaluate your query: