Subject SQL standard for sort fields and returned fields
Author liviuslivius
Hi,
 
This is not specific to Firebird question but:
is something in SQL standard specification about sorted fields must be also returned?
I mean:
 
SELECT 
[FILM_DATE,]FILM_TITLE
FROM
FILMS
ORDER BY FILM_DATE, FILM_TITLE
 
is [FILM_DATE] required by SQL standard or it is optional or SQL standard tell nothing about this?
 
regards,
Karol Bieniaszewski