drop table test;

create table test (
	field1 varchar2(20),
	field2 varchar2(20),
	field3 varchar2(20),
	field4 varchar2(20)
);

insert into test(field1,field2,field3,field4) values ('a','b','c','d');
insert into test(field1,field2,field3,field4) values ('e','f','g','h');
insert into test(field1,field2,field3,field4) values ('i','j','k','l');
insert into test(field1,field2,field3,field4) values ('m','n','o','p');
insert into test(field1,field2,field3,field4) values ('q','r','s','t');

select * from test;