Help: Update + Join (Error)

Question

Good afternoon!
I have a problem in a script in the Oracle database.
I could do update's scripted with easy relationship in MySQL, but Oracle does not accept the way I know.
Anyway, I'm trying to do this update with the script below, but I can not:
update titulo_receber ti
set ti.nr_seq_trans_fin_contab = 601
where 1=1
and   ti.nr_titulo in (SELECT
                                A.NR_TITULO
                              FROM TITULO_RECEBER a,
                                          TITULO_RECEBER_CLASSIF b
                              WHERE 1 = 1
                                AND b.nr_titulo = a.nr_titulo
                                AND a.nr_titulo = 1180674
                                AND b.cd_conta_financ = 909
                                AND a.nr_seq_trans_fin_contab is null)
The following error appears when you run this query:
ORA-02291: integrity constraint (TASY.TITRECE_TRAFINA_FK) violated - parent key not found
I was racking my brain and I was on google a long time and could not find an effective solution.
If anyone can help me, thank you very much!
Danilo

Answer 1

You are trying to update nr_seq_trans_fin_contab to 601.  The column nr_seq_trans_fin_contab has a foreign key relationship named  titrece_trafina_fk to another table.  the value 601 must exist in that other table before you can update titulo_receber.
To find which table that is, assuming that you are logged in as in the tasy user do:
select table_name
from user_constraints
where constraint_name = (select r_constraint_name
                         from user_constraints
                         where constraint_name = 'TITRECE_TRAFINA_FK');
John