Conditional unique constraint with multiple fields in oracle db

Question

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 (ob

Answer 1

@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