The HAVING clause is used with the GROUP BY clause to filter the groups created by the GROUP BY clause. It enables you to specify conditions that filter which group results appear in the results.
⇒ The HAVING clause was added to SQL because aggregate functions like SUM, AVG, MIN, MAX, and COUNT cannot be used with the WHERE clause.
⇒ The WHERE clause places conditions on the selected columns, whereas the HAVING clause places conditions on groups created by the GROUP BY clause.
⇒ In an SQL query, the HAVING clause is placed after the GROUP BY clause.
Correcting spelling mistakes, grammar mistakes, and conceptual errors, this version provides a clear and accurate explanation of the HAVING clause and its usage.
