my $sql = <<EOT
SELECT col1, col2
FROM table....
EOT

my $sth = $dbh->prepare($sql);
$sth->execute();
$sth->bind_columns(\my ($col1, $col2));

my %data;
while ($sth->fetch) {
  push @{$data{$col1}}, $col2;
}

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In reply to Re^2: DBI with hash of arrays by runrig
in thread DBI with hash of arrays by pipeops

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