Re: Join three tables and specify criteria... I know this should be easy!

From: Paul Linehan <linehanp(at)tcd(dot)ie>
To: Naresh Kumar <narain337(at)gmail(dot)com>
Cc: Chuck Roberts <croberts(at)gilsongraphics(dot)com>, "pgsql-novice(at)postgresql(dot)org" <pgsql-novice(at)postgresql(dot)org>
Subject: Re: Join three tables and specify criteria... I know this should be easy!
Date: 2014-08-29 17:35:41
Message-ID: CAF4RT5S4g8uaSk-AtEhLhMp1KSaDPbRizLf4LxwVGt67eKvoMQ@mail.gmail.com
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2014-08-29 18:05 GMT+01:00 Naresh Kumar <narain337(at)gmail(dot)com>:

Hi Naresh, and thanks for that,

> SELECT ul_user_id, user_name
> FROM user_language ul
> INNER JOIN language l ON ul.ul_iso_code = l.iso_code
> INNER JOIN user u ON u.user_id = ul.ul_user_id
> where l.language_name IN ('English', 'German')
> group by ul_user_id, user_name having COUNT(*) > 1

This gives the correct answer - however, I am just wondering what will I
do if I wish to specify just 'EN' say, or just 'DE'? Sometimes one
language is sufficient and we only need people who speak one
language - your query won't pick them up. Any ideas?

(My apologies BTW for not having included that in my original
spec :-) ).

Paul...

> -Naresh

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linehanp(at)tcd(dot)ie

Mob: 00 353 86 864 5772

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