Check out example codes for "SQL HAVING". It will help you in understanding the concepts better.

Code Example 1

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

Code Example 2

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

  HAVING COUNT(CustomerID) > 5;

Code Example 3

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

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