Hello,

Basically, below is a example on how to use bind_columns to improve your fetch effieciency/speed. Its working fine for me, but lets say the SQL statement doesn't return any rows, leaving it to print nothing. How can I determine that? For example, if it doesn't find anything , I want it to print "Sorry, No Matches." I have commented the example code below on where It would return nothing and where I want it to print the no match message.

use strict;
use DBI;

my $dbh = DBI->connect( 'dbi:mysql:golharam:serine',
                        '',
                        '',
                        {
                          RaiseError => 1,
                          AutoCommit => 0
                        }
                      ) || die "Database connection not made: $DBI::er
+rstr";

my $sql = qq{ SELECT id, name, title, phone FROM employees };
my $sth = $dbh->prepare( $sql );
$sth->execute();

my( $id, $name, $title, $phone );
$sth->bind_columns( undef, \$id, \$name, \$title, \$phone );

while( $sth->fetch() ) {    #lets say sth->fetch() doesn't return anyt
+hing...this is where i want to print the no match message.
  print "$name, $title, $phone\n";
}

$sth->finish();
$dbh->disconnect();

[download]


Thank you,
perleager

In reply to Empty Hash? by perleager

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