Rhino wrote:
----- Original Message ----- From: "John Meyer" <[EMAIL PROTECTED]>
To: "List: MySQL" <mysql@lists.mysql.com>
Sent: Tuesday, May 30, 2006 5:09 PM
Subject: Query problem
Setup
TITLES:
TITLE_ID
AUTHORS:
AUTHOR_ID
TITLE_AUTHOR:
(TITLE_ID,AUTHOR_ID)
Problem:
Given a title, I need to find all the authors who aren't connected
with that particular book.
That's a pretty odd requirement, I must say. If your database has
thousands or millions of books, you'd have to assume that virtually ALL
of the authors in the database are NOT connected with a particular book.
Actually, this is more along the lines of a PHP form where I am adding
an author to a title when the title is in the database. I want to
create a select list where the current authors in the database are
shown, but not the ones already associated with that title.
Oh yeah, and one other thing, title and book are not synonymous in this
one. I'll give you the breakdown:
TITLES:
TITLE_ID
AUTHORS:
AUTHOR_ID
TITLE_AUTHOR:
(TITLE_ID,AUTHOR_ID)
BOOKS:
BOOK_ID
TITLE_BOOK:
(BOOK_ID,TITLE_ID)
EDITORS:
(BOOK_ID,AUTHOR_ID)
Complex enough for you? ;-)
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