I ran into an interesting problem today. While testing my database program (mysql driven), i began to realize that when selecting from fields, that '' is considered acceptable input. SELECT FROM table WHERE username=$form_username and password=$form_password and name=''; will yield nothing because name always has a value in it. i know i can do this: 
$form_username = 'bleah';
$form_name = 'joejoe';

$SQL = "SELECT FROM table WHERE"; 
if ($form_username) { $SQL .= "username = $form_username AND "; }
if ($form_password) { $SQL .= "password = $form_password AND "; }
if ($form_name) { $SQL .= "name = $form_name AND "; }
$SQL =~ s/\sAND\s$//; #exists if not everything is filled in

print $SQL;

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but it's totally impractical, not to mention ugly. any good solution out there?

In reply to mysql search statement by Parham

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