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Posted by "Richard Lynch" on 12/30/05 21:23
On Thu, December 29, 2005 7:26 am, sunaram patir wrote:
> could you please tell me what is the problem with this query
> mysql_query("SELECT * FROM mailbox WHERE read=''");
Nope.
Because on the face of it, there is NOTHING wrong with the query
written above, per se.
> i always get this warning:
> Warning: mysql_num_rows(): supplied argument is not a valid MySQL
> result resource in index.php on line 24
While *I* can't tell you what is wrong, and nobody on this entire list
could tell you what is wrong, MySQL and PHP are just BEGGING to tell
you what's wrong:
$result = mysql_query($query) or die(mysql_error());
http://php.net/mysql_error
Actually, there *IS* one obvious thing "wrong" with the query:
You used "SELECT * " and that is a horrible horrible habit to get into.
Don't do it.
Name the columns you actually want.
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