The following statement is an example of simple use of the HAVING clause with an aggregate function.

To list those products available in more than one size or color, you need a query to group the rows in the Products table by name, but eliminate the groups that include only one distinct product:

SELECT Name
   FROM Products
   GROUP BY Name
   HAVING COUNT( * ) > 1;

For information about when you can use aggregate functions in HAVING clauses, see Where you can use aggregate functions.

The HAVING clause can also be used without aggregates.

The following query groups the products, and then restricts the result set to only those groups for which the name starts with B.

SELECT Name
   FROM Products
   GROUP BY Name
   HAVING Name LIKE 'B%';

More than one search condition can be included in the HAVING clause. They are combined with the AND, OR, or NOT operators, as in the following example.

To list those products available in more than one size or color, for which one version costs more than $10, you need a query to group the rows in the Products table by name, but eliminate the groups that include only one distinct product, and eliminate those groups for which the maximum unit price is under $10.

SELECT Name
   FROM Products
   GROUP BY Name
   HAVING COUNT( * ) > 1
   AND MAX( UnitPrice ) > 10;