Re: complicated query (newbie..)
От | Marcin Krol |
---|---|
Тема | Re: complicated query (newbie..) |
Дата | |
Msg-id | 49DE2F96.7000308@gmail.com обсуждение исходный текст |
Ответ на | Re: complicated query (newbie..) (Sam Mason <sam@samason.me.uk>) |
Ответы |
Re: complicated query (newbie..)
|
Список | pgsql-general |
Sam Mason wrote: > This is a big hint that things are going wrong. You need those quotes > in there, an "integer" is a plain number and not a date. > This one does work in the sense of selecting out the wrong host but it still produces nothing but NULLs! SELECT h.id, r.id, r.start_date, r.end_date FROM hosts h LEFT JOIN (reservation_hosts m INNER JOIN reservation r ON m.reservation_id = r.id AND (r.start_date,r.end_date) OVERLAPS ('2009-04-09'::date,'2009-04-10'::date)) ON h.id = m.host_id WHERE h.id NOT IN ( SELECT m.host_id FROM reservation r, reservation_hosts m WHERE r.id = m.reservation_id AND m.host_id IS NOT NULL AND (r.start_date,r.end_date) OVERLAPS ('2009-04-09'::date,'2009-04-10'::date) ORDER BY h.id, r.start_date) Regards, mk
В списке pgsql-general по дате отправления: