Hi there,

I have a MySQL database and am using DBI to query it and a CGI
script to show the results in the browser.

My cgi takes input from the form (good) and performs as expected if the
input is a record in the database (good). However if nonsense is typed in - ie. the record
is not in the database, all I get is an internal sever error.

I tried putting counting the number of retrieved rows, figuring if there was nothing retrieved from the
database, $count would be zero. I then tried an if statement (if $count==0 then print stuff about record not found etc.)
This didn't help though.
#!/biol/programs/perl/bin/perl -w

use strict;
use DBI;
use CGI qw(:standard);

#print "Content-type:text/html\n\n";

my($dbh,$sth,$count,$sql,$cgi);

$cgi = new CGI;
use CGI::Carp qw(fatalsToBrowser);


    
$dbh = DBI->connect("DBI:mysql:host=myhost;database=mydb",
    "username","password",
    {PrintError =>0, RaiseError => 1})|| die "Database connection not 
+made: $DBI::errstr";

    $sql = qq{SELECT * FROM name};
    $sth = $dbh->prepare($sql);
    
    $sth->execute();
    print header(),
    start_html(-title=>"My Database",-BGCOLOR=>"white",-FONT=>"Times")
+;
    
    print STDOUT "<H1>My Database</H1><BR><BR>";
    
    print STDOUT "<TABLE><TR><TH>Short name</TH><TH>Long name</TH></TR
+>";
    
    my ($id,$short_name,$long_name);
    $sth->bind_columns(undef,\$id,\$short_name,\$long_name);
    
    while($sth->fetch()){
        print STDOUT "<TR><TD>$short_name</TD><TD>$long_name<TD></TR>"
+;
    }
    
    print STDOUT "</TABLE>";
    print p (end_html);
    
    
    $sth->finish();
    $dbh->disconnect();
    exit(0);

[download]
Any ideas ?

thanks,
basm101

In reply to MySQL/DBI: Error if entry is not in the database by basm101

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