cross-table reference

Поиск
Список
Период
Сортировка
От Mukesh Ghatiya
Тема cross-table reference
Дата
Msg-id 36586775D676C443A856A00683526649A0C797@gaugeboson.jnpr.net
обсуждение исходный текст
Ответы Re: cross-table reference
Список pgsql-sql
Hi,

I need to perform a query similar to

SELECT table1.a.b.x table1.a.c.x from table1;


In this case "a" is an attribute in 'table1' and is a foreign key to
other table2 which has 'b', and 'c' as attributes, which again are
foreign keys to table3.


Is there any simple way of doing this other than using the complicated
nested joins which would include aliases also.

SELECT table31.x table32.x
FROM table1, table3 AS table31, table3 AS table32
WHERE table1.a = table2.id AND table2.b = table31.id AND table2.c = table32.id


Thanks,
Mukesh


В списке pgsql-sql по дате отправления:

Предыдущее
От: orange_crush_068@hotmail.com
Дата:
Сообщение: Unique primary index?
Следующее
От: Zac
Дата:
Сообщение: SELECT INTO returning more than one row