Re: something about dates in mysql

In this case $mth, $day, $year is userinput that needs to be validated before use. thanks for all help, the quotes proved helpfull Med venlig hilsen Rolf Brejner Web-forlaget.dk ----- Original Message ----- From: "Richard Quadling" <rquadling@gmail.com> To: "Alex" <niksoft@gmail.com> Cc: <php-general@lists.php.net> Sent: Thursday, March 03, 2011 2:13 PM Subject: Re: [PHP] something about dates in mysql On 3 March 2011 12:33, Alex <niksoft@gmail.com> wrote:

Just a correction, dates in mysql are not strings by any means, they are stored in 3 bytes (date and time or 8 bytes for datetime) and that's nowhere enough for a string, however the representation of the date is a formatted string, so for all intents and purposes any comparison to a date field should be using quotes like mentioned already. -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. Nathan Rixham <nrixham@gmail.com> wrote: Richard Quadling wrote: > On 3 March 2011 10:09, Webforlaget.dk <info@web-forlaget.dk> wrote: >> I need help to know Why this dont work ?

_____________________________________________ $thisdate =date("Y-m-d",mktime(0,0,0,$mth, $day, $year)); >> >> $sql = "SELECT id,case,startdate,enddate FROM table WHERE startdate<=$thisdate AND enddate>=$thisdate ORDER BY startdate"; >>

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The result should be an array whith open cases at $thisdate, but nothing appear. >> >> Is it something about dates in mysql ? >> >> Thanks for any advice. >> >> Best regards, >> >> Venlige hilsner >>

Rolf Brejner > > I think that dates in SQL statements need to be

in the quotes as they > are strings and not integers. > > So, try ...

$sql = "SELECT id,case,startdate,enddate FROM table WHERE >

startdate<='$thisdate' AND enddate>='$thisdate' ORDER BY startdate";

I'm surprised you don't get an error.... > > Ah. As it stands,

the SQL is something like ... > > WHERE startdate <= 2010 - 3 - 3 > > So, probably the actual test that is being executed is .... > > WHERE startdate <= 2004 > > Which, for a date stamp will never return anything sensible. yes, and remember the DATE and FROM_UNIXTIME mysql functions too. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php

I didn't intend to suggest that dates in mysql were STORED as strings, just that in the SQL Statement they were treated as strings. -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php