Two suggestions.

1. Change:

   #!C:/Perl64/bin/perl.exe
   use DBI;

   to

   #!C:/Perl64/bin/perl.exe
   use strict;
   use warnings;
   use DBI;

   and;
    

2. Change:

   $sth = $dbh->prepare("SELECT username, password FROM users WHERE username =$username and password=$password");

   to

   my $sqlStatement = "SELECT username, password FROM users WHERE username =$username and password=$password";
   print "Submitting:  $sqlStatement\n";
   $sth = $dbh->prepare($sqlStatement);

   
    

See what the full SQL statement looks like; you are likely to find an error there, since that's what your error message says.

Most SQL requires strings to be encapsulated in single-quotes:  ... and password = 'newpassword';

Dunno if that's your problem, but the above changes should help shed light on what you are getting wrong in the SQL statement.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.