Subject | SQL standard for sort fields and returned fields |
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Author | liviuslivius |
Post date | 2016-05-09T10:45:52Z |
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