create table ttt
(
a number(2) not null,
b number(2) not null,
c number(2) not null,
primary key(a,b,c)
)
partition by range(a)
(
partition p1 values less than (1000) tablespace ts1,
partition p2 values less than (1000) tablespace ts2,
partition p3 values less than (1000) tablespace ts3,
)