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Sort by expiry date

Posted on 2008-10-15
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Last Modified: 2013-12-13
I have a table of different competitions. Each as an expiry date in the form:

DD/MM/YYYY

at the moment I am counting the total number of entries using this query:

      $queryTotal = "SELECT COUNT(id) FROM archive_comps;";
      
      $totalResult = mysql_query($queryTotal);
      confirm_query($totalResult);
            
      $total = mysql_fetch_array($totalResult);

However i want to be able to count the entries which are still active ie. have not expired.

How do I do this?

Thanks
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Question by:DrZork101
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11 Comments
 
LVL 17

Expert Comment

by:houssam_ballout
ID: 22718818
you must compare their date with the date of today.

0
 
LVL 6

Expert Comment

by:RemcovC
ID: 22718844
This should do the trick:

$queryTotal = "SELECT COUNT(id) FROM archive_comps WHERE CDate(expirydate)>CURRENT_TIMESTAMP;";
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Author Comment

by:DrZork101
ID: 22718922
when i use that it says:

FUNCTION databaseName1.CDate does not exist

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LVL 6

Assisted Solution

by:RemcovC
RemcovC earned 1000 total points
ID: 22718940
oops sorry, it should be cast(expirydate as datetime)
it's sql not vb ^^
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LVL 6

Expert Comment

by:RemcovC
ID: 22718945
(The cast is not needed if the expiredate is already a datetime field)
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Author Comment

by:DrZork101
ID: 22718980
the expiry date is stored in the database as DD/MM/YYYY

now its says:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') > CURRENT_TIMESTAMP' at line 1

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LVL 1

Expert Comment

by:gtsupport
ID: 22718979
Maybe this will work

$queryTotal = "SELECT COUNT(id) FROM archive_comps WHERE expirydate> now();";<!-- richText -->
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Author Comment

by:DrZork101
ID: 22719007
the query from gtsupport does run, however does no come up with the right results.

does closingDate have to be converted to a specific formatting?
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LVL 6

Expert Comment

by:RemcovC
ID: 22719024
yep to datetime format

you can do that by convert or cast
CAST (closigndate as date)
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Accepted Solution

by:
DrZork101 earned 0 total points
ID: 22719190
Thanks remcovC but that did not work I have solved the problem using:

$queryTotal = "SELECT COUNT(id) FROM archive_comps WHERE STR_TO_DATE(closingDate,'%d/%m/%Y') > CURDATE()";
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LVL 1

Expert Comment

by:gtsupport
ID: 22719364
Great that it answered your problem. I did not think that you would save the expired date field as a string. You might want to change it to a timestamp format for better performance. That way you will not need to call the STR_TO_DATE function.  It will also allow you to  index your  column  to make it faster to retrieve data.
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