Using the SQL HAVING Clause

SQL HAVING Clause: Main Tips

• The HAVING clause was added to SQL to add more functionality.
• WHERE keyword can not be used in union with other functions. That where HAVING clause come in handy.
• HAVING clause is often used with the COUNT function.

Syntax of SQL HAVING

SELECT name_of_column(s)
FROM name_of_table
WHERE condition
GROUP BY name_of_column(s)
HAVING condition
ORDER BY name_of_column(s);

Demo Database

Let us say we have a database with information about pets.

Below is a "Pets" table:

SQL HAVING: Example

If we want to get the countries that have registered, for example, more than 2 pets, we would use HAVING clause.

The example below shows how to use it.

SELECT COUNT(ID), Country
FROM Pets
GROUP BY Country
HAVING COUNT(ID) > 2;