SQL HAVING

  SELECT COUNT(CustomerID), Country
FROM Customers
GROUP BY Country

  HAVING COUNT(CustomerID) > 5;
 

SELECT COUNT( * ) 
FROM agents 
HAVING COUNT(*)>1; --count is greater than 1

SELECT colonne1, SUM(colonne2)
FROM nom_table
GROUP BY colonne1
HAVING fonction(colonne2) operateur valeur