From: Scott Baker (bakersweb-ster.com)
Date: Mon Jan 17 2005 - 17:48:54 CST

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Can't you do:

SELECT count(*) AS count, name, year FROM a
    WHERE place IN ('south','west','east')
    GROUP BY name, year
    ORDER BY count DESC, name ASC
    LIMIT 4 OFFSET 1;

zeusix.netcom.com wrote:
> Hi there:
>
> I have a "How do I..." SQL question regarding selecting
> distinct values from a field not included in an aggregated
> query when LIMIT is in effect, illustrated by the
> following example:
>
> Table a contains the names of individuals, the places
> they have visited and the year in which they were visited.
>
> Let's see who has visited where and when:
>
> SELECT * FROM a;
>
> name place year
> ------ ------- ------
> kim north 2004
> kim south 2003
> kim south 2003
> bob west 2004
> bob west 2004
> bob west 2003
> joe south 2004
> joe south 2005
> sue west 2004
> bob east 2003
> joe east 2004
> joe east 2004
> sue south 2004
> bob north 2004
> bob north 2005
>
> Summarize data by number of places visited by year:
>
> SELECT count(*) AS count, name, year FROM a
> GROUP BY name, year
> ORDER BY count DESC, name ASC;
>
> count name year
> ------- ------ ------
> 3 bob 2004
> 3 joe 2004
> 2 bob 2003
> 2 kim 2003
> 2 sue 2004
> 1 bob 2005
> 1 kim 2004
> 1 joe 2005
>
> Return only four rows beginning at second row:
>
> SELECT count(*) AS count, name, year FROM a
> GROUP BY name, year
> ORDER BY count DESC, name ASC
> LIMIT 4 OFFSET 1;
>
> count name year
> ------- ------ ------
> 3 joe 2004 s,e,e
> 2 bob 2003 w,e
> 2 kim 2003 s,s
> 2 sue 2004 s,w
>
> Select only places visited included in LIMITed query:
>
> SELECT DISTINCT place FROM a ????;
>
> place
> -------
> south
> west
> east
>
> Note that the place north does not appear in the last result
> because north was only visited by bob in 2005 and kim in 2004,
> records which are not included in the limited result.
>
> Any help appreciated.
>
> I would like to be compatible with 3.23.xx.
>
> -Bob
>

--
Scott Baker
Canby Telephone - Network Administrator - RHCE
Ph: 503.266.8253

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