Materialized view ....subquery expression not allowed

Hi,
I have been assigned to create a materialized view using the following subquery.
When I executed it is giving error ora-22818:subquery expressions not allowed here. The same query is good for view but not MV.
Can anybody help me in writing MV for my query.
select rownum as ROWNUMBER,f.id Folder_ID, concatyear(f.id) year_name,
(select nvl(fr.requestor,fr.requested_by) from fts_folder_request fr where
fr.folder_id=f.id and fr.status=0 ) Pending_Requestor,
(select nvl(fr.requestor,fr.requested_by)
from fts_folder_request fr,fts_folder_checkout_history fch where
fr.folder_id=f.id and fch.folder_requested=fr.id and fch.return_date is null) CheckOut_To from fts_folder f;
Thanks in advance.

Any help in creating MV for my query.It contains subquery expressions that have to be avoided in MV.
select rownum as ROWNUMBER,f.id Folder_ID, concatyear(f.id) year_name,
(select nvl(fr.requestor,fr.requested_by) from fts_folder_request fr where
fr.folder_id=f.id and fr.status=0 ) Pending_Requestor,
(select nvl(fr.requestor,fr.requested_by)
from fts_folder_request fr,fts_folder_checkout_history fch where
fr.folder_id=f.id and fch.folder_requested=fr.id and fch.return_date is null) CheckOut_To from fts_folder f;
Thanks.
Message was edited by:
user617694

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Help regarding Materialized view ( subquery expression not allowed here )

Hi all,
while creating materialized view i got following error
ORA- 22818
subquery expression not allowed here
following is my query
CREATE MATERIALIZED VIEW MV_NAV_REC
BUILD IMMEDIATE
REFRESH COMPLETE ON DEMAND
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select folio_no FOLIONO,CHKDIGIT as Check_Digit,sch_code SCHEMECODE, sysdate as FOLIODATE ,
     (select case when count(distinct SUBBROKERCODE) =1 then to_char(max(SUBBROKERCODE)) else 'Multiple Broker' end   from transaction_st
     where folio_no = tst.folio_no
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     where folio_no = tst.folio_no AND SCH_CODE = tst.sch_code
     group by folio_no,sch_code) NUM_UNITS_NEW ,
--SUM (case when tran_type NOT in ('REDEMPTION','SWITCH OUT') THEN UNITS ELSE 0 - UNITS END ) AS Num_Units,
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     where folio_no = tst.folio_no AND SCH_CODE = tst.sch_code
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--SUM (case when tran_type NOT in ('REDEMPTION','SWITCH OUT') THEN AMOUNT ELSE 0 -AMOUNT END ) AS Scheme_Amount,
sum( CASE WHEN upper(tran_type) NOT in ('REDEMPTION','SWITCH OUT') THEN
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           ELSE (0 - units) * (select nav_rs from nav_rec where nav_rec.sch_code = tst.sch_code and nav_rec."Date" = /*trunc(sysdate)*/to_date('23/03/2009','dd/mm/yyyy')) END ) Scheme_Valuation ,
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null as "Prefered Mode of SOA",
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from transaction_st   tst
group by folio_no ,sch_code,CHKDIGIT
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please help me

Hi,
You cannot use scalar subqueries in a materialized view.
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:4110947624538#22981269011674
edit
From 10g doc:
ORA-22818: subquery expressions not allowed here
Cause: An attempt was made to use a subquery expression where these are not supported.
Action: Rewrite the statement without the subquery expression.
(http://download.oracle.com/docs/cd/B19306_01/server.102/b14219/e19400.htm#sthref6020)
Edited by: hoek on Jun 10, 2009 7:56 AM

Received ORA-22818 subquery expressions not allowed here when creating mate

Hello,
I was trying to create a materialized view to describe the referential integrity between the tables in my schema:
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Hello
This may be a bug in your version as I can do it successfully on 10.2
tylerd@DEV2> create materialized view user_references
2 build immediate
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5 as
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10 and uc.constraint_name = ucc.constraint_name
11 and uc.owner=upper('my_schema');
Materialized view created.
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2 /
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - Prod
PL/SQL Release 10.2.0.2.0 - Production
CORE 10.2.0.2.0 Production
TNS for 32-bit Windows: Version 10.2.0.2.0 - Production
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ORA-22818: subquery expressions not allowed here

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Hi,
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thanks,
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Interesting. I am getting even worse results on 11.2.0.1.0:
SQL> select * from v$version
2 /
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
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TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
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2 /
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2 /
BANNER
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PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0      Production
TNS for 32-bit Windows: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
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CURSOR STATEMENT : 2
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KING
MILLER
RESEARCH       CURSOR STATEMENT : 2
CURSOR STATEMENT : 2
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FORD
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CURSOR STATEMENT : 2
ENAME
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WARD
MARTIN
BLAKE
TURNER
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CURSOR STATEMENT : 2
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2 /
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CURSOR STATEMENT : 2
ENAME
CLARK
KING
MILLER
RESEARCH       CURSOR STATEMENT : 2
CURSOR STATEMENT : 2
ENAME
SMITH
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SCOTT
ADAMS
FORD
SALES          CURSOR STATEMENT : 2
CURSOR STATEMENT : 2
ENAME
ALLEN
WARD
MARTIN
BLAKE
TURNER
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OPERATIONS     CURSOR STATEMENT : 2
CURSOR STATEMENT : 2
no rows selectedSY.
Edited by: Solomon Yakobson on Jul 17, 2012 1:27 PM

Subquery is not allowed within FILTER arguments

In a report I need to show two columns of same type but with values obtained with different criterias.
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Materialized view ....subquery expression not allowed

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