create table ptestfilter (a string, b int) partitioned by (c string, d int);
describe ptestfilter;

alter table ptestfilter add partition (c='1', d=1);
alter table ptestfilter add partition (c='1', d=2);
alter table ptestFilter add partition (c='2', d=1);
alter table ptestfilter add partition (c='2', d=2);
alter table ptestfilter add partition (c='3', d=1);
alter table ptestfilter add partition (c='3', d=2);
show partitions ptestfilter;

alter table ptestfilter drop partition (c='1', d=1);
show partitions ptestfilter;

alter table ptestfilter drop partition (c='2');
show partitions ptestfilter;

drop table ptestfilter;