> -----Original Message----- > From: Ron Piggott [mailto:ron.piggott@xxxxxxxxxxxxxxxxxx] > 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: m.ford@xxxxxxxxxxxxxx T: +44 113 812 4730 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm
