> -----Original Message-----
> From: Ron Piggott [mailto:[email protected]]
> Sent: 17 October 2011 18:38
>
> I need help creating a mySQL query that will select the correct
> introduction message for a website I am making. The way I have
> designed the table I can’t wrap my mind around the SELECT query that
> will deal with the day # of the month.
>
> The part of the SELECT syntax I am struggling with is when the
> introduction message is to change mid month. The reason I am
> struggling with this is because I haven’t used ‘DATE’ for the column
> type. The reason I didn’t use ‘DATE’ is because the same message
> will be displayed year after year, depending on the date range.
>
> What I am storing in the table is the start month # (1 to 12) and
> day # (1 to 31) and then the finishing month # (1 to 12) and the
> finishing day # (1 to 31)
>
This is a little bit of a tricky one, as you have to consider both
start_month and end_month as special cases - so you need a three-part
conditional, for the start month, the end month, and the months in
between. Something like this:
SELECT * FROM `introduction_messages`
WHERE (month>`start_month` AND month<`end_month`)
OR (month=`start_month AND day>=`start_day`)
OR (month=`end_month` AND day<=`end_day`);
Cheers!
Mike
--
Mike Ford,
Electronic Information Developer, Libraries and Learning Innovation,
Portland PD507, City Campus, Leeds Metropolitan University,
Portland Way, LEEDS, LS1 3HE, United Kingdom
E: [email protected] T: +44 113 812 4730
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