Two joins on same foreign key

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От Anony Mous
Тема Two joins on same foreign key
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Msg-id 00bb01c3e77c$e8bfa2e0$7402a8c0@PETER
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Ответы Re: Two joins on same foreign key  (Gregory Wood <gwood@ewebengine.com>)
Re: Two joins on same foreign key  (Michael Glaesemann <grzm@myrealbox.com>)
Re: Two joins on same foreign key  (elein <elein@varlena.com>)
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Hi,

 

I’m fairly new to this database, and have read much discussion on sub-queries.  I’ve seen that they can be great for some queries, and downright slow for others.  I have a table with two foreign keys referencing another table, like:

 

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!

 

-AM

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