Fellow monks,
I have an odd database problem. I'm implementing user registration on my website; in my user validation, I have code like this:
$SQL = "SELECT COUNT(*) FROM Members WHERE Nickname = '?'";
$Statement = $Database->prepare($SQL);
$Statement->execute($NickName);
my @numrows = $Statement->fetchrow_array;
rint "NumRows: @numrows";
if (($Statement->rows) > 0)
{
LogError("NICK_TAKEN");
return("-1");
}
The problem is this: I can never get the $Statement to return anything when selecting a Nickname I know exists. If I try this in the mysql monitor (using the same user login and machine as this script runs on, and the exact same query), I get back one row; but inside this script, nothing. I've also tried my $NumRows = $Statement->rows but that always returns zero rows.
I'm using CGI.PM with fatalstobrowser. I tried modifying the username, and it expectedly spits out a database login error with the modified username - but with the "correct" username, I get nothing.
I've done things like this before without a problem. Where can I look that would give me an indication of what is breaking down?
UPDATE: Thanks for the hints, everyone. I should have clarified earlier that I actually tried to select the rows and then count them, then I read the CPAN warning and decided to use SELECT COUNT(*) instead. In the end, removing the single quotes worked.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|