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Using the SQL HAVING Clause

Reading time 1 min
Published Aug 9, 2017
Updated Oct 11, 2019

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

Example
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);
Theory is great, but we recommend digging deeper!

Demo Database

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

Below is a "Pets" table:

ID City_ID Breed_ID Birthdate Country
696 90 5 2009-08-14 USA
670 81 6 2012-09-02 UK
671 34 4 2013-01-01 NO

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.

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