Synonym for sequence.nextval

Question

Hi all,
I have an error on this
Error(48,48): PL/SQL: ORA-02287: sequence number not allowed here
SELECT MAX (capacity_id_seq) - capacity_id_seq.NEXTVAL
INTO lv_new_importmaxrecord
FROM capacity_current;
Shoud I create a public synonym for this??to solve this...

Answer 1

SQL>
SQL> drop table t;
Table dropped.
SQL> drop sequence t_seq;
Sequence dropped.
SQL> create table t (x) as
select rownum from all_objects
where rownum <= 1000;
Table created.
SQL>
SQL> create sequence t_seq;
Sequence created.
SQL>
declare
  n number;
begin
  select max(x) - t_seq.nextval
  into n
  from t;
  dbms_output.put_line(n);
end;
  select max(x) - t_seq.nextval
ERROR at line 4:
ORA-06550: line 4, column 25:
PL/SQL: ORA-02287: sequence number not allowed here
ORA-06550: line 4, column 3:
PL/SQL: SQL Statement ignored
SQL>
SQL> set serveroutput on size 1000000
SQL>
declare
  n number;
begin
  select maxn - t_seq.nextval
  into n
  from (select max(x) as maxn from t);
  dbms_output.put_line(n);
end;
999
PL/SQL procedure successfully completed.
SQL>
SQL>pratz