SQL Basics: How to Join Multiple Tables in SQL and the Importance of LEFT JOIN vs INNER JOIN

Опубликовано: 27 Февраль 2025
на канале: StrataScratch

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In this video, We will show you how to join multiple tables in SQL and the importance of LEFT JOIN vs INNER JOIN. We’ll also talk about things to watch out for when joining multiple tables.

To show you how this works, we’ll use the LinkedIn interview question we’ve categorized as medium difficulty. Here's the link to the question: https://platform.stratascratch.com/co...

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Timeline:

Intro: (0:00)
Reference Table Concept: (0:20)
Interview Question: (0:38)
The Code: Inner Joining Multiple Tables: (1:04)
The Output: Inner Joining Multiple Tables: (2:31)
LEFT JOIN vs INNER JOIN: (3:33)
The Reference Table With The LEFT JOIN: (5:18)
The Code: LEFT Joining Multiple Tables: (6:16)
The Output: LEFT Joining Multiple Tables: (6:43)
Conclusion: (7:13)
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About The Platform:

I'm using StrataScratch (https://platform.stratascratch.com/co..., a platform that allows you to practice real data science interview questions. There are over 1000+ interview questions that cover coding (SQL and python), statistics, probability, product sense, and business cases.

So, if you want more interview practice with real data science interview questions, visit https://platform.stratascratch.com/co.... All questions are free and you can even execute SQL and python code in the IDE, but if you want to check out the solutions from me or from other users, you can use ss15 for a 15% discount on the premium plans.

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Contact:

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