GROUP BY & HAVING CLAUSE IN SELECT COMMAND | group by and having clause in sql

Опубликовано: 22 Февраль 2025
на канале: Nikhil Data Solutions

This video explains how to use the GROUP BY clause in SQL to group rows that have the same values into summary rows, like finding the total, average, or count of a particular column for each group. It covers how to combine GROUP BY with aggregate functions such as COUNT, SUM, AVG, MIN, and MAX to extract meaningful insights from your data.

In addition, the video dives into the HAVING clause, which allows you to filter groups created by the GROUP BY clause. Unlike the WHERE clause that filters rows before grouping, the HAVING clause filters the results after the grouping is done. This helps in narrowing down grouped data based on aggregate values.

Key Topics:

Using GROUP BY to organize data
Applying aggregate functions like COUNT, SUM, AVG
Filtering groups with HAVING
Understanding the difference between WHERE and HAVING

Where clause in SQL:
• where clause in sql | sql for beginners

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