Hi amihay,
SQL> declare 2 a number; 3 begin 4 5 select 1 into a from dual where 1 = 0; 6 end; 7 / declare * ERROR at line 1: ORA-01403: no se han encontrado datos ORA-06512: en lÝnea 5
SQL> select test from dual;
TEST ----------
SQL> declare 2 a number; 3 begin 4 a := test; 5 end; 6 / declare * ERROR at line 1: ORA-01403: no se han encontrado datos ORA-06512: en "DAZ.TEST", lÝnea 5 ORA-06512: en lÝnea 4