Re: Join several tables (to fetch user info), but one of them is optional (user avatar)

From: Alexander Farber <alexander(dot)farber(at)gmail(dot)com>
To:
Cc: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Join several tables (to fetch user info), but one of them is optional (user avatar)
Date: 2012-12-19 13:54:44
Message-ID: CAADeyWi=EUdkZ7WOT1fUe+L8SFqZeDVG=XMcV2552mMzVXyysg@mail.gmail.com
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Thank you, I've ended up with:

# select
u.uid,
/* u.pass, */
f.filename as avatar,
(g.field_gender_value='Female') as female,
c.field_city_value as city
from
drupal_users u LEFT OUTER JOIN drupal_file_managed f on
(u.picture=f.fid),
drupal_field_data_field_gender g,
drupal_field_data_field_city c
where
u.name='mvp' and
g.entity_id=u.uid and
c.entity_id=u.uid
;
uid | avatar | female | city
-------+--------+--------+--------------
18539 | | f | Moscow
(1 row)

I wonder though what is the syntax if I wanted
the other 2 tables (drupal_field_data_field_gender
and drupal_field_data_field_city) to be joined
as a "left outer join" as well?

Regards
Alex

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