POSTgreSQL Trick | SQL for Beginners | Data Analysis For Beginners

In this postgresql video, you’ll learn to use the `COUNT()` function in PostgreSQL to efficiently count rows, non-null values, and distinct entries. We’ll cover basic usage, counting with conditions using the `WHERE` clause, and advanced techniques like counting unique values with `DISTINCT` and grouping data with `GROUP BY`. You’ll also see how to filter results using the `HAVING` clause for refined counts. This tutorial will help you master data analysis with SQL by showing how to apply the `COUNT()` function in real-world scenarios.! #postgresql #sql #dataanalysis #dataanalytics #dataanalyst #sqlforbeginners #mrbioinformatix

Видео POSTgreSQL Trick | SQL for Beginners | Data Analysis For Beginners канала Mr. BioinformatiX