create table nps(nps_key number, pname varchar2(10), svalue varchar2(10));
insert into nps values(1,'Paramx','4,5,6');
create table np_data(nps_key number, tstamp date, pvalue varchar2(10));
insert into np_data values(1,sysdate,'4,4,6'); --good match
insert into np_data...