SQL STATEMENT NOT PROPERLY ENDED - HELP NEEDED

Question

Can anyone tell me the error in this code, I get an error message sql statement not properly ended when I run it.
update MODT set rootobj=(SELECT REF(A) FROM
OR_COMP_T A
WHERE A.ID=O.ID)
AS OR_COMP_T_REF)
FROM OLD_MODT O where id = 1;

Answer 1

Hi, here is the schema and the expected results.
=======================================================================================
CREATE TYPE OR_MODT_OBJ;
CREATE TYPE OR_MODT_OBJ_REF AS TABLE OF REF OR_MODT_OBJ;
=================================================
CREATE OR REPLACE TYPE OR_COMP_T_OBJ
(id number (6),
typ char (4),
SUPERID REF OR_COMP_T_OBJ,
MOD REF OR_MODT_OBJ);
=================================================
CREATE OR REPLACE TYPE OR_COMP_T_REF AS TABLE OF REF OR_COMP_T_OBJ;
=================================================
CREATE TABLE OR_COMP_T OF OR_COMP_T_OBJ
=================================================
CREATE TYPE OR_MODT_OBJ
(id number (6),
typ char (4),
rootobj REF OR_COMP_T_OBJ,
comp_tb     OR_COMP_T_REF);
=================================================
CREATE TABLE MODT OF OR_MODT_OBJ
NESTED COMP_TB STORE AS COMP_TB_NESTED;
=================================================
INSERT INTO OR_MODT (ID,TYP,ROOTOBJ,COMP_TB)
SELECT ID,TYP,NULL,NULL FROM OLD_MODT;
INSERT INTO OR_COMP_T(ID,TYP,SUPERID,MOD)
SELECT ID,TYP,NULL,NULL FROM OLD_OR_COMP_T;
==================================================
There are two rows in OLD_MODT, and these two rows are to be inserted into OR_MODT.
They are:
Sample data in OLD_MODT are:
id,      typ,     rootobj
1     type1     1
2     type3     365
=================================================
Data from OLD_OR_COMP_T is to be inserted into OR_COMP_T as well, and likewise, it has a ref to OR_MODT, so the ref data was not inserted at the same time.
Now OLD_OR_COMP_T has a number of rows but attribute MOD for two of these rows os the rootobj for OR_MODT,
such that:
id     typ     superID     mod
1     type4     NULL     1
2     type2     10101     1
3     type     20202     1
365     type2     NULL     2
366     type2     20202     2
I want to get the ID of OR_COMP_T where ID is 1 and where ID is 365. These values are to be in rootobj.
I also want to get the value of ID in OR_MODT to be placed in MOD of OR_COMP_T.
PLEASE HELP ME.