Michael, John, ALL; Thank you! Thanks you! My errors of "local_host" and "if $dbh->err" fix it. I am able to insert and select data.
Thank you ALL, Jerry -----Original Message----- From: Michael Stassen [mailto:[EMAIL PROTECTED] Sent: Friday, March 04, 2005 5:41 PM To: John Trammell Cc: mysql@lists.mysql.com; [EMAIL PROTECTED]; Gerald Preston Subject: Re: insert data Right. First, I think the logic is flawed. We should successfully prepare() or die. Period. If the call to prepare() failed ($sth is undef), we should not making dying conditional on yet another value. More to the point, this line is actually the cause of the problem. (Sorry I didn't see it earlier.) You've run into the precedence rules: my $sth = $dbh->prepare( $sql ) or die $dbh->errstr if $dbh->err; is read as (my $sth = $dbh->prepare( $sql ) or die $dbh->errstr) if $dbh->err; That is, it is equivalent to if ($dbh->err) { $sth = $dbh->prepare( $sql ) or die $dbh->errstr; } Since the connect succeeded, $dbh->err is undef, so we never even call prepare! Hence, $sth is undef when we get to execute, and you get the error message. I expect this is what Joe (John Doe) was trying to tell us earlier. The simplest solution would be to drop the "if $dbh->err". That is, change to my $sth = $dbh->prepare( $sql ) or die $dbh->errstr; John's suggestion (below) is better still, as it adds helpful detail to the error message when there is one (though I don't see the need to make it a separate line of code). Michael John Trammell wrote: > Gerald Preston wrote: > [snip] > >>my $sth = $dbh->prepare( $sql ) or die $dbh->errstr if $dbh->err; > > [snip] > > Regardless of other problems you may be having, I think you're not > doing what you want to do here. How about instead: > > my $sth = $dbh->prepare($sql); > $sth || die "Error preparing sth from '$sql': ", $dbh->errstr; > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
