How can I write a MySQL query to retrieve data from a table depending on other tables information?

Question

I have these three Tables I need a query that retrieve the member.member_name of those members that are in same department and have the same stage.stage and same stage.stage_group .

department.name could be any college department name like (Art, Architecture, Electric, ....)

member.member_name could be any name like (jack, Amber, ...)

stage.stage --> (1, 2, 3, 4, 5, 6)

`stage.stage_group' --> (A, B, C, D, E)

I need some help from you to show me the way or some ideas to do that with MySQL server in the right way. So I'll be glad to see your help.

Thanks,

Answer 1

Use JOINs for all three tables

SELECT * FROM member
JOIN department
ON members.department_id=department.department_id
JOIN stage
ON stage.member_id=member.member_id

Answer 2

You can apply the inner join on three tables and if there are any conditions to be applied you can apply them in where clause

    select members.member_name from members,department,stage where
    members.department_id=department.department_id and 
    stage.member_id=members.member_id