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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 ...

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

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

LINK in the comments - In CTE o insert your old query - In CTE n: insert your new query - In Difference CTE: - The first part selects ...

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 ...

Looking for a SQL tutorial that's user-friendly and easy to follow? Look no further than using ChatGPT! This video tutorial is ...

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

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

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

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

Check AWS services cheatsheet on my website nataindata.com S3: object storage Redshift: data warehouse for large-scale data ...