use SQL::Abstract::ExtraClauses;
use Devel::Dwarn;

warn $ARGV[1];

my @args = eval '('.$ARGV[1].')';

die $@ if $@;

my $sqlac = SQL::Abstract::ExtraClauses->new(unknown_unop_always_func => 1);

Dwarn([ $sqlac->${\$ARGV[0]}(@args) ]);