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create table t1 (
pk bigint not null auto_increment,
dt datetime default null,
unique (pk, dt)
) engine=aria row_format=dynamic
partition by range columns(dt) (
partition `p20171231` values less than ('2017-12-31'),
partition `p20181231` values less than ('2018-12-31')
);
insert into t1 values (1,'2017-09-28 15:12:00');
select * from t1;
pk dt
1 2017-09-28 15:12:00
alter table t1 drop partition p20181231;
select * from t1;
pk dt
1 2017-09-28 15:12:00
drop table t1;
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