https://javarevisited.blogspot.com/2013/08/difference-between-where-vs-having-clause-SQL-databse-group-by-comparision.html
Key point, which is also the main difference between WHERE and HAVING clause in SQL is that, condition specified in WHERE clause is used while fetching data (rows) from table, and data which doesn't pass the condition will not be fetched into result set, on the other hand HAVING clause is later used to filter summarized data or grouped data
Key point, which is also the main difference between WHERE and HAVING clause in SQL is that, condition specified in WHERE clause is used while fetching data (rows) from table, and data which doesn't pass the condition will not be fetched into result set, on the other hand HAVING clause is later used to filter summarized data or grouped data
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