Weird behaviour with subquery

Поиск
Список
Период
Сортировка
От Christopher Kings-Lynne
Тема Weird behaviour with subquery
Дата
Msg-id 405FAA41.2020707@familyhealth.com.au
обсуждение исходный текст
Ответы Re: Weird behaviour with subquery  (Christopher Kings-Lynne <chriskl@familyhealth.com.au>)
Список pgsql-hackers
What's going on here:

usa=> select user_id from users_users where joindate >= '2004-03-09';
ERROR:  column "user_id" does not exist

usa=> select * from shop_orders where user_id in (select user_id from 
users_users where joindate >= '2004-03-09');
[waits and waits and waits...have to cancel]
^CCancel request sent
ERROR:  canceling query due to user request

How come using a field that doesn't exist in the subquery actually works 
and doesn't cause a syntax error?

Chris



В списке pgsql-hackers по дате отправления:

Предыдущее
От: "Matthew T. O'Connor"
Дата:
Сообщение: Re: [DEFAULT] Daily digest v1.4346 (20 messages)
Следующее
От: Christopher Kings-Lynne
Дата:
Сообщение: Re: Weird behaviour with subquery