having clause is used with SQL Queries to give more precise condition for a statement. It is used to mention condition in Group based SQL functions, just like WHERE clause.
Syntax for having will be,
select column_name, function(column_name) FROM table_name WHERE column_name condition GROUP BY column_name HAVING function(column_name) condition
Consider the following Sale table.
Suppose we want to find the customer whose previous_balance sum is more than 3000.
We will use the below SQL query,
SELECT * from sale group customer having sum(previous_balance) > 3000
Result will be,