"Steve" <[EMAIL PROTECTED]> writes:
> What I need to know, is how to find out if a column is a primary, or part of
> a primary key.  I need to do this using sql.

In 7.3 this is pretty easy: look in the pg_constraint table for a 'p'
constraint for the table.  If you find one, 'conkey' lists the column
numbers of the key columns.  In prior versions you'd need to look in
pg_index instead.  (Actually the pg_index method still works, but it's

See the "System Catalogs" chapter of the documentation.

                        regards, tom lane

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