Get the total count of employees reporting to the Supervisor MYSQL -


i have table called employee has following columns.

desc employee; +-----------+-------------+------+-----+---------+-------+ | field     | type        | null | key | default | | +-----------+-------------+------+-----+---------+-------+ | fname     | varchar(15) | no   |     | null    |       | | minit     | char(4)     | yes  |     | null    |       | | lname     | varchar(15) | no   |     | null    |       | | ssn       | char(9)     | no   | pri | null    |       | | bdate     | date        | yes  |     | null    |       | | address   | varchar(50) | yes  |     | null    |       | | sex       | char(4)     | yes  |     | null    |       | | salary    | int(11)     | yes  |     | null    |       | | super_ssn | char(9)     | yes  | mul | null    |       | | dno       | int(11)     | no   | mul | null    |       | +-----------+-------------+------+-----+---------+-------+

super_ssn foreign_key refers ssn in same table. have first , last name of employee supervisor. able achieve following query.

select e.fname, e.lname employee e, employee s s.super_ssn = e.ssn;

i want total number of employees directly supervised each supervisor. i'm having difficulty figuring out how that.

select e.fname, e.lname, count(*)  employee e, employee s s.super_ssn = e.ssn group_by e.ssn;

i sure did above wrong. can me?. in advance.


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