Here we use the COUNT() function and the GROUP BY clause, to return the number of records for each category in the Products table: You will learn more about the GROUP BY clause later in this tutorial.

The SQL COUNT function is an aggregate function that returns the number of rows returned by a query. For example, you can use the COUNT function in the SELECT statement to get the number of …

Nov 22, 2025 · We can use the COUNT () function along with CASE WHEN to count rows that match a specific condition. This is helpful when we want to count rows based on certain criteria without …

Oct 21, 2021 · In this query, SQL counts all the values for product_code in the table products and returns the total number. This is because we passed the product_code column as an argument to …

Nov 18, 2025 · COUNT(*) doesn't require an expression parameter because by definition, it doesn't use information about any particular column. COUNT(*) returns the number of rows in a specified table, …

Jan 14, 2025 · It is commonly used to determine the number of entries in a table, count distinct values, or count rows after filtering data. It sets the number of rows or non NULL column values. COUNT () …

This SQL tutorial explains how to use the SQL COUNT function with syntax, examples, and practice exercises. The SQL COUNT function is used to count the number of rows returned in a SELECT …

In this tutorial, you will learn about the SQL COUNT () function with the help of examples.

Learn the COUNT function to count rows, non-null values, and unique records for powerful data analysis. Key Insight: COUNT (*) ≥ COUNT (column) ≥ COUNT (DISTINCT column) 1. COUNT (*) - …

Summary: in this tutorial, you will learn how to use the SQL Server COUNT() function to get the number of items in a set. SQL Server COUNT() is an aggregate function that returns the number of items in a …