Left Join Explained: SQL vs. Pandas | LeetCode 175 Walkthrough

In this video, we solve LeetCode 175: Combine Two Tables. This problem is the perfect introduction to Joins, specifically the LEFT JOIN, which allows us to combine data while preserving all records from our primary table. What you will learn: - SQL: How to use the LEFT JOIN syntax to connect the Person and Address tables. - SQL Tip: Why a standard JOIN (Inner Join) would fail this test case by removing people without addresses. - Pandas: Using the pd.merge() function with the how='left' argument. - Data Selection: How to filter and display only the requested columns (FirstName, LastName, City, State). ⏱️ Timestamps: 0:00 - Intro 0:53 - SQL Solution 1:50 - Python Pandas Solution Check out my Playlist: https://www.youtube.com/playlist?list=PLGT-z9cVth9mua-HvnqhN2FQTisyZjQ4B Check out study material on GitHub (downloadable in .PDF): https://github.com/TetyanaHvozda/SQL-vs-Pandas-Study-Material-for-LeetCode-Problems/blob/main/SQL%20vs%20Pandas%20LeetCode%20EASY.ipynb 💡 Subscribe for more LeetCode deep dives and FAANG prep! www.youtube.com/@datahead_girl #leetcode #sql #python #pandas #dataanalytics #interviewprep #datascience #coding