I have this table:
XPTO_TABLE (id, obj_x, date_x, type_x, status_x)
I wanna create a unique constraint that applies to the fields (obj_x, date_x, type_x)
only when status_x <> 5
.
I have tried to create this one but Oracle says:
line 1: ORA-00907: missing right parenthesis
CREATE UNIQUE INDEX UN_OBJ_DT_TYPE_STATUS
ON XPTO_TABLE(
(CASE
WHEN STATUS_X <> 5
THEN
(OBJ_X,
TO_CHAR (DATE_X, 'dd/MM/yyyy'),
TYPE_X)
ELSE
NULL
END));
What's the correct syntax ?
@jamesfrj: it looks like you are trying to ensure that your table should contain only one record for which status <>5
.
You can try creating a unique functional index by concatenating the columns, as given below
create table XPTO_TABLE (id number,
obj_x varchar2(20),
date_x date,
type_x varchar2(20),
status_x varchar2(20)
);
create unique index xpto_table_idx1 on XPTO_TABLE(case when status_x <>'5' THEN obj_x||date_x||type_x||STATUS_x ELSE null END);
Hope it helps
Vishad