Question

ok; this has been frying my brain for hours. I think I might need a sub query, but I’m not that advanced at this kind of thing so any help or pointers in the right direction would be greatly appreciated.

Here’s the Query I have….

$query = "SELECT * FROM events WHERE event_type = 'Christmas Listings' AND event_active='Yes' ORDER BY event_date ASC LIMIT 5";
$result= mysql_query($query); 

OK… now for the plain english bit on what I want to achieve (to understand what I’m trying to achieve):

1. I want to check the event type (‘event_type‘) is what I’m getting (ie. Christmas Listings) as there are multiple types in this column.

2. I want to check the event is active (‘event_active‘) is Yes(the data in this field is Yes/No).

3. I want to order them by the (‘event_date‘) ASC (the data in this field is yyyy-mm-dd) so they show the latest entry by its date from the DB.

4. I want to LIMIT (or in some way control the output) the results to only have 5 results displayed when running this kind of query through a WHILE statement.

OK, this all works BUT; when I get to the actual output display, i’m having a shaky output in how many results are actually display… What happens is if I have multiple events which are switched off, as in event_active is ‘Off‘ then its almost like the argument is counting from the all the results that are (including event_active='Off') and consequently not showing how I expect them to display?

Hope this makes sense…. Any help would be gratefully received.

Answer 1

SELECT * 
FROM events 
WHERE event_type = 'Christmas Listings' AND event_active='Yes' 
ORDER BY event_date 
LIMIT 0, 5

so your statement is easyer to read..

1. You shoul use 1 / 0 instead of Yes / no
2. The Limit does not count all lines!
   First step – doing the query including WHERE
   Second step – ORDER BY
   Third step – LIMIT
   If you have set an index on the colum you sort. The sort will stop after 5 lines,
   also means – it get faster
3. The ASC in the ORDER BY command is not necessary, because ASC is default