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From:Elim PDT Date:July 21 2009 5:43pm
Subject:Re: Hard? query to with group order by group head's name
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Hi Darryle,
Your result was:
+-----------+-------+---------+
| member_id | name  | head_id |
+-----------+-------+---------+
|         2 | Ann   |       1 |
|         3 | David | NULL |
|         1 | Elim  | NULL |
|         5 | Jane  |       3 |
|         4 | John  |       3 |
+-----------+-------+---------+
which not groups correctly. Seems it's a hard query.


----- Original Message ----- 
From: "Darryle Steplight" <dsteplight@stripped>
To: "Elim PDT" <elim@stripped>
Cc: <mysql@stripped>
Sent: Wednesday, July 15, 2009 11:50 PM
Subject: Re: Hard? query to with group order by group head's name


Hi Elim,
     I didn't test it out but it sounds like you want to do this "
SELECT * FROM group_members GROUP BY head_id, member_id ORDER BY name
ASC ".

On Thu, Jul 16, 2009 at 1:20 AM, Elim PDT<elim@stripped> wrote:
> My table group_member looks like this:
> +-----------+-------+---------+
> | member_id | name | head_id |
> +-----------+-------+---------+
> | 1 | Elim | NULL |
> | 2 | Ann | 1 |
> | 3 | David | NULL |
> | 4 | John | 3 |
> | 5 | Jane | 3 |
> +-----------+-------+---------+
>
> Record with null head_id means
> the member is a group head.
> Record with head_id k are in the
> group with head whoes id equals k.
>
> I like to fetch the rows in the following ordaer
>
> | 3 | David | NULL |
> | 4 | John | 3 |
> | 5 | Jane | 3 |
> | 1 | Elim | NULL |
> | 2 | Ann | 1 |
>
> That is
> (1) A head-row follewed by the group members with that head
> (2)head rows are ordered alphabetically by name.
>
> What the query looks like?
>
> Thanks
>
>



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