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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() ...

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.

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

Query optimization in DBMS | Query Optimisation techniques- MOST IMPORTANT SQL/ DBMS INTERVIEW QUESTION. ✨Link to ...

SQL Challenge: Find Days with Rising Temperatures! 🌡️ In this SQL tutorial, we solve a real-world problem by identifying dates ...

Struggling with slow SQL queries? Want to optimize them for lightning-fast performance? In this video, I'll walk you through SQL ...

In this video, we'll solve one of the most frequently asked PySpark interview questions — “How to find the Top N records per group ...