The SQL COUNT () Function The COUNT() function returns the number of rows that matches a specified criterion.

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 …

Jan 20, 2026 · 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 · The COUNT () function in SQL returns the number of rows that match a specified condition. It's widely used to count the total entries in a table, count unique values, or count rows that …

Let's look at an example that shows how to use the COUNT function with a single expression in a query. In this example, we have a table called employees with the following data:

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 …

It is used to return the number of rows or non-null values in a column. The COUNT function syntax is as follows: In this syntax, column_name specifies the name of the column for which you want to count …

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

Dec 12, 2024 · Whether you're identifying duplicates, calculating group totals, or filtering data, the COUNT() function is here to help. In this article, I'll show you the many ways in which COUNT() is …