How to get multiple records against one record based on relation?

Question

I have two tables Organisation and Employee having one to many relation i.e one organisation can have multiple employees. Now I want to select all information of a particula

Answer 1

Here's what you can do, you have 2 options:

select *
FROM
  users u
  LEFT JOIN organizations o ON (u.idorg = o.id);

This way you will get extra data on each row - full organization info you don't really need.

Or you can do:

select o.*, group_concat(u.name)
FROM
  users u
  LEFT JOIN organizations o ON (u.idorg = o.id)
GROUP BY
  o.id

http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html#function_group-concat

The second approach is applicable if you want to see ie. list of usernames "user1, user2, user3", but don't want to operate on the fields themselves...