Formating Object Type XML

Question

Hi
heres a qry:
SELECT b.bucket_id,
SYS_XMLGEN(
bucket_type(
b.bucket_id,
b.plan_start_date,
b.plan_end_date,
b.order_qty,
CAST(
MULTISET(
select bucketorder_type(
o.order_id,
o.start_date,
o.end_date)
from bucketorders o
where o.bucket_id = b.bucket_id)
AS bucketorders_type)),
sys.xmlgenformattype.createFormat('bucket')).getClobVal() "bucket"
FROM bucket b
generates this:
<?xml version="1.0"?>
<bucket id="T4000001PM40">
<plan_start_date>01-JAN-02</plan_start_date>
<plan_end_date>10-JAN-02</plan_end_date>
<order_qty>10</order_qty>
<orders>
<BUCKETORDER_TYPE id="01">
<start_date>01-JAN-02</start_date>
<end_date>01-JAN-02</end_date>
</BUCKETORDER_TYPE>
</orders>
</bucket>
how can I change BUCKETORDER_TYPE tag to another name?
thanks

Answer 1

I'm still trying to solve based on 9.0.1.1.1.
In the mean time, XMLelement etc are not more efficient as such, however they are were we will focus our efforts in future. The big advantage of the SQL/XML operators today are that they are more flexible, and are based on forthcoming industry standards...
Here is a solution based on 9.2.0.1.0
SQL> drop table bucket
  2  /
Table dropped.
SQL> drop table order_tab
  2  /
Table dropped.
SQL> create table bucket
  2  (
  3    id number,
  4    bucket_id number,
  5    start_date date,
  6    end_date date,
  7    qty number
  8  )
  9  /
Table created.
SQL> create table order_tab
  2  (
  3     bucket_id number,
  4     order_id number,
  5     start_date date,
  6     end_date date
  7  )
  8  /
Table created.
SQL> insert into bucket values (1,1, to_date('2002-02-04','YYYY-MM-DD'), to_date('2002-06-04','YYYY-
MM-DD'),20)
  2  /
1 row created.
SQL> insert into order_tab values (1, 1,  to_date('2002-03-04','YYYY-MM-DD'), to_date('2002-05-04','
YYYY-MM-DD'))
  2  /
1 row created.
SQL> insert into order_tab values (1, 2,  to_date('2002-09-04','YYYY-MM-DD'), to_date('2002-07-04','
YYYY-MM-DD'))
  2  /
1 row created.
SQL> insert into bucket values (2,2, to_date('2002-02-04','YYYY-MM-DD'), to_date('2002-06-04','YYYY-
MM-DD'),20)
  2  /
1 row created.
SQL> insert into order_tab values (2, 1,  to_date('2002-03-04','YYYY-MM-DD'), to_date('2002-05-04','
YYYY-MM-DD'))
  2  /
1 row created.
SQL> select xmlelement
  2         (
  3           "Bucket",
  4           xmlForest
  5           (
  6             b.bucket_id as "ID",
  7             b.start_date as "startDate",
  8             b.end_date as "endDate"
  9           ),
10           ( Select xmlagg
11                    ( xmlelement
12                      (
13                        "Order",
14                        xmlAttributes
15                        (
16                        o.order_id as "ID"          
17                 ),
18                        xmlForest
19                        (
20                          o.start_date as "startDate",
21                          o.end_date as "endDate"
22                        )
23                      )
24                    )
25            from order_tab o
26            where o.bucket_id = b.bucket_id
27            )
28          )
29  from bucket b
30  /
<Bucket>
  <ID>1</ID>
  <startDate>04-FEB-02</startDate>
  <endDate>04-JUN-02</endDate>
  <Order ID="1">
    <startDate>04-MAR-02</startDate>
    <endDate>04-MAY-02</endDate>
  </Order>
  <Order ID="2">
    <startDate>04-SEP-02</startDate>
    <endDate>04-JUL-02</endDate>
  </Order>
</Bucket>
<Bucket>
  <ID>2</ID>
  <startDate>04-FEB-02</startDate>
  <endDate>04-JUN-02</endDate>
  <Order ID="1">
    <startDate>04-MAR-02</startDate>
    <endDate>04-MAY-02</endDate>
  </Order>
</Bucket>If this is an acceptable soln please let me know. If not I'll see if we can solve in 9.0.1. You may need to use DBMS_XMLQUERY rather than SYS_XMLAGG and SYS_XMLGEN..