On Sat, 10 Oct 2009, [utf-8] Dag-Erling Sm??rgrav wrote: > Consider the attached schema (filmstars.sql), which is a poorly designed > database of films and actors. The following query gives me a list of > films in which either Charlie or Martin Sheen starred: > > select fs.film.title, fs.film.year > from fs.film left join fs.star on fs.film.id = fs.star.film > where fs.star.last = 'Sheen' > group by fs.film.title, fs.film.year; > > Is there a way to do this without the "group by" clause?
Not at all tested as I don't have access to my db right now, but I think something like one of these would work: select fs.film.title, fs.film.year from fs.film where exists(select 1 from fs.star where fs.film.id = fs.star.film and fs.star.last = 'Sheen'); select fs.film.title, fs.film.year from fs.film where fs.film.id in (select fs.star.film where fs.star.last = 'Sheen'); -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
