drop sequence test20_keygen_seq restrict;

drop table test20_keygen;

drop table test20_keygen_ext;

drop table test20_keygen_string;

drop table test20_keygen_ext_string;

drop table test20_uuid;

drop table test20_uuid_ext;

drop table test20_identity;

drop table test20_identity_ext;

drop table test20_seqtable;