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use Modern::Perl;
use Data::Dump qw/dump/;
use SQL::Abstract;
...
    $sth->finish();
}

{ a => 0.2, b => "abc", c => 0.3 }
{ a => 0.1, b => "abd", c => 0.3 }
{ a => 0.4, b => "abe", c => 0.2 }
{ a => 0.1, b => "abc", c => 0.5 }
{ a => 0.1, b => "abd", c => 0.8 }