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Re: [LUG] SQL advice

 

Robin Cornelius wrote:

> I am displaying a list of seminars using the following :-
> 
> $sql ="SELECT Seminar_id,
> Seminar_name,Seminar_Venue,Seminar_Description,UNIX_TIMESTAMP(Seminar_Date)
> as date,UNIX_TIMESTAMP(Seminar_Date2) as
> date2,Seminar_PDF,Seminar_type, Seminar_paperscall FROM Seminar WHERE
> TO_DAYS(NOW()) <TO_DAYS(Seminar_Date) AND ( Seminar_type=\"0\" OR
> Seminar_type=\"1\") ORDER BY Seminar_Date ";
> 
> Which produces a nice list of forthcomming seminars with the next
> seminar at the top of the list.
> 
> What i want to do now is start to use the Seminar_paperscall field.
> This is a deadline to get  submissions to the seminar in and i want to
> produce a list that has the seminars in order as before but
> interspersed with any submission deadlines eg :-

Add a field to the select which is the the earlier of Seminar_paperscall
and Seminar_Date (or Seminar_Date if Seminar_paperscall is null) and
order by that?  Should be possible to generate the description to
associate with the date in a similar way.

James

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