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From:Ferindo Middleton Date:October 5 2006 9:26pm
Subject:multiple primary keys on one table?
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I have a primary key set on a table which consists of the combination of the
values: firstname, lastname, and a schedule_id (BIGINT(20))... I have this
so the records in this table do not have duplicates, being that no one
record should have the exact same name and schedule_id identifier.

However, I want to keep this same restriction while also ensuring that no
two records have the same email_address and schedule_id identifier...

You can't have the db enforce two different primary keys on one table, so
how would I implement having this kind of restriction, which, in itself,
seems to require that I have a second primary key to enforce another
constraint to dissalow records to be added that carry the same combination
of: email_address and schedule_id?

just ferindo

Thread
multiple primary keys on one table?Ferindo Middleton5 Oct
  • Re: multiple primary keys on one table?Dan Buettner5 Oct
    • Re: multiple primary keys on one table?Ferindo Middleton6 Oct
      • Re: multiple primary keys on one table?Gabriel PREDA6 Oct
  • Re: multiple primary keys on one table?Miles Thompson6 Oct
  • Re: multiple primary keys on one table?Martijn Tonies6 Oct
  • Re: multiple primary keys on one table?Renish6 Oct