USE sequence.nextval in SQL statement

Question

Hi,
I want to use SEQUENCE_name.NEXVAL in our query.
But it gives error
ora-02287: sequence number not allowed here
Select distinct dd.agreementid,dd.cityid,dd.bankid,dd.bankbranchid,zz.bankbranchdesc,
account_no,account_type,Sysdate,'A',Null,'1001',Sysdate,NULL,NULL,
ELEC_PMNT_SEQ.Nextval seq_num
From pdi.pdi_instr_d_tmp dd,
pdi.pdi_bankbranch_m zz,
pdi.pdi_bankaccount_tmp t
Where t.agreementid = dd.agreementid
And dd.cityid = zz.cityid
And dd.bankid = zz.bankid
And dd.bankbranchid= zz.bankbranchid
And dd.mc_status = 'M' And dd.status = 'M' And instr_type <> 'P'
Thanks & Regards
K S Ratan

Answer 1

You can use a subquery, but maybe have you need an order by clause ?
SQL> ed
Wrote file afiedt.buf
  1* select distinct username, MySeq.nextval from dba_users
SQL> /
select distinct username, MySeq.nextval from dba_users
ERROR at line 1:
ORA-02287: sequence number not allowed here
SQL> ed
Wrote file afiedt.buf
  1  select a.*, MySeq.nextval
  2* from (select distinct username from dba_users order by username) a
SQL> /
USERNAME                          NEXTVAL
DBSNMP                                  1
H89UCBAC                                2
OUTLN                                   3
PEOPLE                                  4
PS                                      5
SYS                                     6
SYSTEM                                  7
7 rows selected.
SQL> /
USERNAME                          NEXTVAL
DBSNMP                                  8
H89UCBAC                                9
OUTLN                                  10
PEOPLE                                 11
PS                                     12
SYS                                    13
SYSTEM                                 14
7 rows selected.Is this do you want ? Sequence will increment on each query execution, or did you want the number of output line to have the same result on each sql execution :
SQL> ed
Wrote file afiedt.buf
  1  select a.*, rownum
  2* from (select distinct username from dba_users order by username) a
SQL> /
USERNAME                           ROWNUM
DBSNMP                                  1
H89UCBAC                                2
OUTLN                                   3
PEOPLE                                  4
PS                                      5
SYS                                     6
SYSTEM                                  7
7 rows selected.
SQL> /
USERNAME                           ROWNUM
DBSNMP                                  1
H89UCBAC                                2
OUTLN                                   3
PEOPLE                                  4
PS                                      5
SYS                                     6
SYSTEM                                  7
7 rows selected.
SQL> Nicolas.
Sorry Laurent, you've already showed that works with subquery...
Message was edited by:
N. Gasparotto