You can ignore duplicates by using the DISTINCT keyword in the COUNT() function. If DISTINCT is specified, rows with the same value for the specified column will be counted as one.

Nov 22, 2025 · Counting the Number of Rows with COUNT (*) When we want to count all the rows in a table, regardless of the column values, we can use COUNT (*). It counts every row, including rows …

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, …

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

Jan 14, 2025 · In the following example, an asterisk character ( * ) is used followed by the SQL COUNT () which indicates all the rows of the table even if there is any NULL value.

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 …

Dec 12, 2024 · COUNT(), used with GROUP BY, is useful for counting the number of rows that belong to each group. COUNT(), used with HAVING, is useful for filtering groups according to the number of …

In this example, the COUNT (*) function counts the total number of rows in the customers table. You can also use the COUNT function with a specific column to count the number of non-null values in that …

Mar 16, 2023 · The most common way to use COUNT() is to use it with the asterisk (*) as the argument. The asterisk tells the COUNT() function to return the number of rows in the result set. Example 1: …

Jun 28, 2023 · To master the art of counting in SQL, it’s important to understand the different use cases and techniques for implementing the SQL count function. By studying various examples, beginners …