How can we use MySQL SUM() function with HAVING clause?

By using MySQL SUM() function with the HAVING clause, it filters the result based on a specific condition given after the HAVING clause. To understand the above concept, consider an ‘employee_tbl’ table, which is having the following records −

mysql> SELECT * FROM employee_tbl; +------+------+------------+--------------------+ | id   | name | work_date  | daily_typing_pages | +------+------+------------+--------------------+ | 1    | John | 2007-01-24 |        250         | | 2    | Ram  | 2007-05-27 |        220         | | 3    | Jack | 2007-05-06 |        170         | | 3    | Jack | 2007-04-06 |        100         | | 4    | Jill | 2007-04-06 |        220         | | 5    | Zara | 2007-06-06 |        300         | | 5    | Zara | 2007-02-06 |        350         | +------+------+------------+--------------------+ 7 rows in set (0.00 sec)

Now, the query below will use the HAVING clause with SUM() function to get the total of daily_typing_pages which are more than 250.

mysql> Select Name, SUM(daily_typing_pages) From employee_tbl GROUP BY NAME HAVING SUM(daily_typing_pages) > 250; +------+-------------------------+ | name | SUM(daily_typing_pages) | +------+-------------------------+ | Jack |          270            | | Zara |          650            | +------+-------------------------+ 2 rows in set (0.17 sec)