WHERE login_name=$user_login_name");
That's your problem. It should be 
my $user_login_name = 'name.surname@company.com';

my $sth = $dbh->prepare("SELECT userid, login_name, realname FROM prof
+iles WHERE login_name = ? "); 

$sth->execute($user_login_name);

[download]

Please read up on placeholders in the DBI manual.

Perl 6 - second systems done right

In reply to Re: Wrong SQL Syntax? by moritz
in thread Wrong SQL Syntax? by Frederic_S

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