Subject Re: [firebird-support] Bug or feature (left join)
Author Arno Brinkman
Hi,

> SELECT
> DISTINCT
> TAB_Tooleping.UID
> FROM
> TAB_Tooleping
> JOIN TAB_Tootaja ON (TAB_Tootaja.UID = TAB_Tooleping.Tooline)
> LEFT JOIN TAB_Graafik ON (TAB_Graafik.Tooleping = TAB_Tooleping.UID)
> LEFT JOIN TAB_Vahetus ON (TAB_Vahetus.UID = TAB_Graafik.Vahetus)
> WHERE
> ((TAB_Tooleping.Alates <= '31.10.2006') AND
> ((TAB_Tooleping.Kuni IS NULL) OR (TAB_Tooleping.Kuni >= '01.10.2006'))) AND
> (((TAB_Graafik.Kuupaev <= '31.10.2006') AND (TAB_Graafik.Kuupaev >= '01.10.2006')) OR
> (TAB_Graafik.Kuupaev IS NULL)) AND
> ((TAB_Vahetus.Kestus > 480) OR (TAB_Tootaja.Isikukood STARTING '3') OR (TAB_Tooleping.Tooline =
> 1))
> ORDER BY
> TAB_Tootaja.Perenimi ASC

Note also in this query (TAB_Vahetus.Kestus > 480), because this is on a LEFT JOIN part !!
This could be the intention, but it's a little bit confusing.

Regards,
Arno Brinkman
ABVisie

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