Re: Two joins on same foreign key
От | Michael Glaesemann |
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Тема | Re: Two joins on same foreign key |
Дата | |
Msg-id | 937DFBB4-53B5-11D8-AB38-000A95C88220@myrealbox.com обсуждение исходный текст |
Ответ на | Two joins on same foreign key (Anony Mous <a.mous@shaw.ca>) |
Ответы |
Re: Two joins on same foreign key
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Список | pgsql-general |
On Jan 31, 2004, at 7:03 AM, Anony Mous wrote: > Table #1 > employee_id (pk) > employee_name > > Table #2 > teamleader_employee_id > backup_employee_id > > both fields in table 2 need to do a lookup in table 1 to get the name > of the actual employee. Do I need to use nested queries to accomplish > this? Any help is greatly appreciated! I think you could handle this by calling table1 twice, but with different aliases, like so SELECT leader.employee_name, backup.employee_name FROM table1 leader, table1 backup, table2 t2 WHERE leader.employee_id = t2.teamleader_employee_id AND backup.employee_id = t2.backup_employee_id Does that work for you? Michael Glaesemann grzm myrealbox com
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