+my @tables = scalar(@ARGV)
+ ? @ARGV
+ : grep { ! /^(h|pg)_/ } $schema->tables;
+foreach my $table ( @tables ) {
+ next if grep { /^h_$table/ } $schema->tables;
+ warn "creating history table for $table\n";
+ my $tableobj = $schema->table($table)
+ or die "unknown table $table (did you run dbdef-create?)\n";