Your question specified that you would like the results in an array, but the example output you provided is a hash, and you used selectall_hashref in your earlier reply.

If you would like to fetch all of the rows and have them in a hash then you need to specify which column should be used, as in this example:

 my $hoh = $dbh->selectall_hashref($sql, $index_column);
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In this example the structure would be as follows:

$hoh = {
    1 => {id => 1, col2=>"abc", col3=>"def",    col4=>"ghi"},
    2 => {id => 2, col2=>"lmn", col3=>"opq",    col4=>"rst"},
}
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Keep in mind that as it is returning a hashref the order of the rows will not be preserved. To preserve the order you would use selectall_arrayref as follows:

 my $aoa = $dbh->selectall_arrayrefref($sql);
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In this example the structure would be as follows:

$aoa = [
    [1,"abc", "def", "ghi"],
    [2,"lmn", "opq", "rst"],
]
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If you would like to preserve both the order and the column names, then you can use the Slice option for selectall_arrayref as follows:

 my $aoh = $dbh->selectall_arrayref($sql, {Slice => {}});
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In this example the structure would be as follows:

$aoh = [
    {id => 1, col2=>"abc", col3=>"def",    col4=>"ghi"},
    {id => 2, col2=>"lmn", col3=>"opq",    col4=>"rst"},
]
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