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In this video, I've explained one of the most commonly asked SQL interview questions at Amazon using LEAD() and LAG() ...

Apache Spark has levels to it: - Level 0 You can run spark-shell or pyspark, it means you can start - Level 1 You understand the ...

Check out this simple roadmap that I followed to master SQL...

This is CS50, Harvard University's Introduction to the intellectual enterprises of computer science and the art of programming.

To follow along with this lecture, visit https://cs50.harvard.edu/sql. *** This is CS50, Harvard University's introduction to the ...

Welcome back to logical kanika! In this video, we're diving deep into one of the most powerful yet misunderstood concepts in SQL ...

Confused about SQL UNION, UNION ALL, and INTERSECT? Not sure when to use which? In this video, I break them down with ...

Master SQL Aggregate Functions! In this video, I'll break down COUNT, SUM, MIN, MAX, and AVG with easy-to-follow examples.

Subscribe & Comment 'sql' i will send you complete details and also will send you complete SQL checklist for Data Analyst ...

Ready to build your first SQL table? In this video, we'll walk through the SQL CREATE TABLE command step by step—perfect for ...

How to Count Number of row exist in table without asterisk symbol means without Count (*) function When huge data exist in SQL ...

This confusion kills interviews • GROUP BY collapses rows • Window functions keep row-level data • Running total example ...