create table voucher_x
(
voucher_serial number(6),
voucher_date date,
voucher_source_legd number(4),
voucher_source_sublegd number(4),
voucher_destination number(4),
voucher_ammount number(6,2),
primary key (voucher_serial,voucher_date)
);

insert all
 into voucher_x values (1,to_date('01/01/2011', 'mm/dd/yyyy'),1,1,45,123.5)
 into voucher_x values (2,to_date('01/13/2011', 'mm/dd/yyyy'),1,2,56,36.5)
 into voucher_x values (3,to_date('01/23/2011', 'mm/dd/yyyy'),1,3,67,367.5)
 
 into voucher_x values (1,to_date('02/01/2011', 'mm/dd/yyyy'),1,1,56,13.5)
 into voucher_x values (2,to_date('02/13/2011', 'mm/dd/yyyy'),1,5,67,386.5)
 into voucher_x values (3,to_date('02/23/2011', 'mm/dd/yyyy'),2,4,78,67.5) 
 
  into voucher_x values (1,to_date('03/01/2011', 'mm/dd/yyyy'),2,1,23,513.5)
 into voucher_x values (2,to_date('03/13/2011', 'mm/dd/yyyy'),1,5,12,3586.5)
 into voucher_x values (3,to_date('03/23/2011', 'mm/dd/yyyy'),3,1,12,657.5) 
select * from dual;