I have a script running under Apache/cgi (not mod_perl). Building the sql statement two different ways gives different results, even though the statements are equal. The script: 
sub _select {
    my ($self, $sql, $where, $values, $orderby) = @_;
    my @values = $values ? @$values : undef;

    $sql .= " where $where "      if $where;
    $sql .= " order by $orderby " if $orderby;
    
my $sql2 = "select * from content where name = 'practice' ";
print $sql;
print $sql2;
print ($sql eq $sql2 ? 'equal' : 'NOT');


#    print "DEBUG: $sql w/values: " . Dumper \@values;
    my $sth = $self->dbh->prepare($sql) or die "couldn't prepare: " . 
+$self->dbh->errstr();
 #  $sth->execute(@values) or die "couldn't execute: " . $self->dbh->e
+rrstr();
    $sth->execute() or die "could't execute: " . $self->dbh->errstr();
 
    my @rows = ();
    while (my $row = $sth->fetchrow_hashref()) {
        push (@rows, $self->new($row) ); 
    }
    return \@rows;
}

[download]
The output is: 
select * from content where name = 'practice' 
select * from content where name = 'practice' 
equal
Software error:
DBD::CSV::Statement=HASH(0x1c84c3c) is not a valid SQL::Statement obje
+ct at E:/Perl/site/lib/DBD/File.pm line 171.

[download]
It dies on the $sth prepare if it is passed $sql. But works if passed $sql2. Is there some way the two vars are different even though they appear to be equal?

2001-03-19 Edit by Corion : Changed PRE tags to CODE tags

In reply to Variable are equal but don't behave that way by voyager

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