r/learnSQL • u/yahoo_06 • 2d ago
I made a beginner-friendly SQL JOINs tutorial using PostgreSQL
Hey everyone!
I just published a new video about SQL JOINs for beginners.
In this lesson, I explain:
- why relational databases use multiple tables
- how JOIN works
- INNER JOIN
- LEFT JOIN
- how the ON condition connects tables
- table aliases
- how to join multiple tables
- and how to combine JOINs with WHERE and ORDER BY
I use the Pagila PostgreSQL database for the examples and practice, so everything is demonstrated with actual data rather than just theory.
I'm building a beginner-friendly SQL tutorial series, so I'd really appreciate any feedback on the explanations or examples!
Video:
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u/Jonsinator 1d ago
Is it as sloppy as the image?