Did you check check constraints?
http://www.postgresql.org/docs/8.4/static/ddl-constraints.html

Best
Andreas

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Von: pgsql-sql-ow...@postgresql.org [mailto:pgsql-sql-ow...@postgresql.org] Im 
Auftrag von gvim
Gesendet: Donnerstag, 3. Februar 2011 16:44
An: pgsql sql
Betreff: [SQL] UNIQUE on everything except primary key

I have a table with 11 columns and want to eliminate duplication on INSERTs. 
What's the best method? The obvious solution would be to create a UNIQUE index 
on everything except the primary key - 'id' - but that's a 10-column index and 
doesn't sound very efficient. Am I missing something more obvious?

gvim

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