How can i improve on this join clause

Question

I have a table like this
desc work_table2
WORK_TABLE2_ID NOT NULL NUMBER
APPLICATION_ID NUMBER
APPLICATION_VERSION NUMBER
JOB_ID NUMBER
CUSTOMER_ID NUMBER
ATTRIBUTE_ID NUMBER
TEMPLATE_ID NUMBER
DISTRICT_ID NUMBER
SCHOOL_OID VARCHAR2(32)
PERSON_OID VARCHAR2(32)
CREATE_DATETIME DATE
SCHEMA_NAME VARCHAR2(32)
TABLE_NAME VARCHAR2(32)
COLUMN_NAME VARCHAR2(32)
ROW_ID NUMBER
VALUE VARCHAR2(100)
ACTION VARCHAR2(15)
CIA_VERSION NOT NULL NUMBER
SUB_ROW_ID NUMBER(9)
This is table from which I will be inserting data into other tables. Some sort of standby data table.
Data in this table comes in column format which i
convert into a row. i.e for 1 row in the target table comprises of 10 columns
then i get 10 different rows for that in work_table2
The important columns here are table_name, column_name, value which gives me
the table in which i have to insert the values, the columns of the table & the required values.
I create views out of this table so i can directly insert into the destination tables from
the views. The tables to insert into reside in another schema.
Apart from these columns I also require the job_id, customer_id, action column
which are part of the tables i am going to insert into but will not come from the
column_name column of the work_table2 but do come as separate columns in work_table2
For every row to be inserted into the table i take row_id as the separator and
use it in my join clause
In some cases i get the same row_id for two different rows so i use sub_row_id to get individual rows.
In some cases it is quite possible that i may not get data for few of the columns of the target table. In that case I have I have to show null values in the empty columns
Here is the query i use to create the view. Actually i have created a view generator
PLSQL code which automatically creates views for all the tables.
Though this query gives me the desired output I am very scared looking at the join clause
Could you suggest a better way to get the output
CREATE OR REPLACE VIEW CDL_BELLPERIODMASTER
( OID, CUSTOMER_ID, ORGUNIT_OID, BELLPERIODSET_OID, PERIOD_NUMBER,
SHORT_LABEL, NAME, DESCRIPTION, BEGIN_TIME,
END_TIME, CREATEDBY_OID, CREATEDATE, UPDATEDATE,
ORIGINTYPECD_OID, OWNER_ORGUNIT_OID, CREATE_BY, UPDATE_BY,
UPDATE_DATE, YEAR_TAGGED, APPLICATION_VERSION, INACTIVESTATUS,
ISDELETED, JOB_ID, ACTION )
AS
SELECT OID.value,CUSTOMER_ID.value,ORGUNIT_OID.value,BELLPERIODSET_OID.value,
PERIOD_NUMBER.value,SHORT_LABEL.value,NAME.value,DESCRIPTION.value,
BEGIN_TIME.value,END_TIME.value,CREATEDBY_OID.value,CREATEDATE.value,
UPDATEDATE.value,ORIGINTYPECD_OID.value,OWNER_ORGUNIT_OID.value,
CREATE_BY.value,UPDATE_BY.value,UPDATE_DATE.value,
YEAR_TAGGED.value,APPLICATION_VERSION.value,INACTIVESTATUS.value,
ISDELETED.value,jobs.job_id, act. action
FROM
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='OID') OID,
(SELECT TO_NUMBER(VALUE) value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='CUSTOMER_ID') CUSTOMER_ID,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='ORGUNIT_OID') ORGUNIT_OID,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='BELLPERIODSET_OID')
BELLPERIODSET_OID,
(SELECT TO_NUMBER(VALUE) value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='PERIOD_NUMBER')
PERIOD_NUMBER,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2 WHERE
table_name='WSF_BELLPERIODMASTER' and column_name ='SHORT_LABEL') SHORT_LABEL,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2 WHERE
table_name='WSF_BELLPERIODMASTER' and column_name ='NAME') NAME,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='DESCRIPTION') DESCRIPTION,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='BEGIN_TIME') BEGIN_TIME,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='END_TIME') END_TIME,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2 WHERE
table_name='WSF_BELLPERIODMASTER' and column_name ='CREATEDBY_OID') CREATEDBY_OID,
(SELECT TO_DATE(VALUE,'DD-MON-RRRR') value , row_id, job_id, sub_row_id
FROM work_table2 WHERE table_name='WSF_BELLPERIODMASTER' and
column_name ='CREATEDATE') CREATEDATE,
(SELECT TO_DATE(VALUE,'DD-MON-RRRR') value , row_id, job_id, sub_row_id
FROM work_table2 WHERE table_name='WSF_BELLPERIODMASTER'
and column_name ='UPDATEDATE') UPDATEDATE,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2 WHERE
table_name='WSF_BELLPERIODMASTER' and column_name ='ORIGINTYPECD_OID')
ORIGINTYPECD_OID,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='OWNER_ORGUNIT_OID')
OWNER_ORGUNIT_OID,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2 WHERE
table_name='WSF_BELLPERIODMASTER' and column_name ='CREATE_BY') CREATE_BY,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='UPDATE_BY') UPDATE_BY,
(SELECT TO_DATE(VALUE,'DD-MON-RRRR') value , row_id, job_id, sub_row_id
FROM work_table2 WHERE table_name='WSF_BELLPERIODMASTER' and
column_name ='UPDATE_DATE') UPDATE_DATE,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='YEAR_TAGGED') YEAR_TAGGED,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='APPLICATION_VERSION')
APPLICATION_VERSION,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='INACTIVESTATUS')
INACTIVESTATUS,
(SELECT value , row_id, job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' and column_name ='ISDELETED') ISDELETED,
(SELECT decode(upper(ACTION),'W','U',ACTION) action ,row_id, job_id, sub_row_id
FROM work_table2 WHERE table_name='WSF_BELLPERIODMASTER' AND column_name='OID' ) ACT,
(SELECT row_id , job_id, sub_row_id FROM work_table2
WHERE table_name='WSF_BELLPERIODMASTER' AND column_name='OID' ) JOBS
where
OID.job_id=CUSTOMER_ID.job_id(+) and
OID.job_id=ORGUNIT_OID.job_id(+) and
OID.job_id=BELLPERIODSET_OID.job_id(+) and
OID.job_id=PERIOD_NUMBER.job_id(+) and
OID.job_id=SHORT_LABEL.job_id(+) and
OID.job_id=NAME.job_id(+) and
OID.job_id=DESCRIPTION.job_id(+) and
OID.job_id=BEGIN_TIME.job_id(+) and
OID.job_id=END_TIME.job_id(+) and
OID.job_id=CREATEDBY_OID.job_id(+) and
OID.job_id=CREATEDATE.job_id(+) and
OID.job_id=UPDATEDATE.job_id(+) and
OID.job_id=ORIGINTYPECD_OID.job_id(+) and
OID.job_id=OWNER_ORGUNIT_OID.job_id(+) and
OID.job_id=CREATE_BY.job_id(+) and
OID.job_id=UPDATE_BY.job_id(+) and
OID.job_id=UPDATE_DATE.job_id(+) and
OID.job_id=YEAR_TAGGED.job_id(+) and
OID.job_id=APPLICATION_VERSION.job_id(+) and
OID.job_id=INACTIVESTATUS.job_id(+) and
OID.job_id=ISDELETED.job_id(+) and
OID.job_id= ACT.job_id(+) and
OID.job_id = JOBS.job_id(+) and
OID.row_id=CUSTOMER_ID.row_id(+) and
OID.row_id=ORGUNIT_OID.row_id(+) and
OID.row_id=BELLPERIODSET_OID.row_id(+) and
OID.row_id=PERIOD_NUMBER.row_id(+) and
OID.row_id=SHORT_LABEL.row_id(+) and
OID.row_id=NAME.row_id(+) and
OID.row_id=DESCRIPTION.row_id(+) and
OID.row_id=BEGIN_TIME.row_id(+) and
OID.row_id=END_TIME.row_id(+) and
OID.row_id=CREATEDBY_OID.row_id(+) and
OID.row_id=CREATEDATE.row_id(+) and
OID.row_id=UPDATEDATE.row_id(+) and
OID.row_id=ORIGINTYPECD_OID.row_id(+) and
OID.row_id=OWNER_ORGUNIT_OID.row_id(+) and
OID.row_id=CREATE_BY.row_id(+) and
OID.row_id=UPDATE_BY.row_id(+) and
OID.row_id=UPDATE_DATE.row_id(+) and
OID.row_id=YEAR_TAGGED.row_id(+) and
OID.row_id=APPLICATION_VERSION.row_id(+) and
OID.row_id=INACTIVESTATUS.row_id(+) and
OID.row_id=ISDELETED.row_id(+) and
OID.row_id= ACT.row_id(+) and
OID.row_id = JOBS.row_id(+) and
OID.sub_row_id=CUSTOMER_ID.sub_row_id(+) and
OID.sub_row_id=ORGUNIT_OID.sub_row_id(+) and
OID.sub_row_id=BELLPERIODSET_OID.sub_row_id(+) and
OID.sub_row_id=PERIOD_NUMBER.sub_row_id(+) and
OID.sub_row_id=SHORT_LABEL.sub_row_id(+) and
OID.sub_row_id=NAME.sub_row_id(+) and
OID.sub_row_id=DESCRIPTION.sub_row_id(+) and
OID.sub_row_id=BEGIN_TIME.sub_row_id(+) and
OID.sub_row_id=END_TIME.sub_row_id(+) and
OID.sub_row_id=CREATEDBY_OID.sub_row_id(+) and
OID.sub_row_id=CREATEDATE.sub_row_id(+) and
OID.sub_row_id=UPDATEDATE.sub_row_id(+) and
OID.sub_row_id=ORIGINTYPECD_OID.sub_row_id(+) and
OID.sub_row_id=OWNER_ORGUNIT_OID.sub_row_id(+) and
OID.sub_row_id=CREATE_BY.sub_row_id(+) and
OID.sub_row_id=UPDATE_BY.sub_row_id(+) and
OID.sub_row_id=UPDATE_DATE.sub_row_id(+) and
OID.sub_row_id=YEAR_TAGGED.sub_row_id(+) and
OID.sub_row_id=APPLICATION_VERSION.sub_row_id(+) and
OID.sub_row_id=INACTIVESTATUS.sub_row_id(+) and
OID.sub_row_id=ISDELETED.sub_row_id(+) and
OID.sub_row_id= ACT.sub_row_id(+) and
OID.sub_row_id = JOBS.sub_row_id(+)
Rgrds

Answer 1

Try to use this sample.
create or replace view v
as
select dept.deptno deptcode, dept.dname deptname, sal amount
from emp, dept
where emp.deptno = dept.deptno
select decode( grouping(rownum), 1, to_number(NULL), deptcode ) deptcode,
deptname || decode( grouping(rownum), 1, ' total amount' ) deptname,
sum(amount),
grouping(deptcode) g1, grouping(deptname) g2, grouping(rownum)
from v
group by rollup(deptcode,deptname,rownum)
having (grouping(deptcode) = 0 and
grouping(deptname) = 0 and
grouping(rownum)=0)
OR (grouping(deptcode) = 0 and
grouping(deptname) = 0 and
grouping(rownum)=1)