21- COUNT Aggregate Function in SQL | How to Count Rows in SQL Queries

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COUNT Aggregate Function in SQL | How to Count Rows in SQL Queries

Description:

Welcome to our MS SQL Tutorial Series! In this video, we’ll explore the COUNT aggregate function in SQL, one of the most commonly used functions for counting rows in a table or counting specific conditions in your data. Whether you're analyzing data or performing a data audit, knowing how to use COUNT is essential for generating accurate results.

🔑 What You Will Learn in This Video:
What is the COUNT Function?
The COUNT function is used to return the number of rows that match a specified condition or simply count all rows in a table.

Using COUNT to Count All Rows:
Learn how to count all rows in a table, regardless of the values in those rows.

Using COUNT with Conditions:
We’ll show you how to use COUNT with the WHERE clause to count only rows that meet specific conditions, such as counting employees in a particular department or products within a price range.

Using COUNT with GROUP BY:
Discover how to use COUNT with the GROUP BY clause to count rows in each group. This is useful for reporting purposes like counting orders per customer or students per grade.

COUNT DISTINCT:
Learn how to count unique values using COUNT DISTINCT, perfect for cases where you want to find the number of unique items, like unique products sold.

By the end of this tutorial, you’ll be able to effectively use the COUNT aggregate function to analyze your data.

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