Search notes:
Oracle: SYS_OP_COUNTCHG
The first parameter is supposed to be a
rowid… but let's try using a different datatype:
drop table tq84_countchg;
create table tq84_countchg (
val_1 number,
val_2 varchar2(10)
);
begin
insert into tq84_countchg values ( 4, 'A');
insert into tq84_countchg values ( 4, 'B');
insert into tq84_countchg values ( 2, 'C');
insert into tq84_countchg values ( 2, 'D');
insert into tq84_countchg values ( 2, 'E');
insert into tq84_countchg values ( 5, 'F');
insert into tq84_countchg values ( 4, 'G');
insert into tq84_countchg values ( 5, 'H');
end;
/
select
sys_op_countchg(val_1, 1) cnt_1,
sys_op_countchg(val_1, 2) cnt_2,
sys_op_countchg(val_1, 3) cnt_3,
sys_op_countchg(val_1, 4) cnt_4
from
tq84_countchg
--order by
-- val_1
;
--
-- CNT_1 CNT_2 CNT_3 CNT_4
-- ---------- ---------- ---------- ----------
-- 5 4 3 3