Columns for XML gallery

Question

Hi! I'm nearly there but I can't get this scipt to work!! Its
a basic gallery I'm building that imports images via xml with
thumnails. Problem is I started trying to make columns and it wont
work! I'm nearly there though I can smell it! The Column bit is
declaired at the top and in a for statement at the bottom! Can you
take a look?
Thanks Gavin

Answer 1

I could generate the mixed case columns with no problem. It was my mistake and sorry for the inconvinience.
However I am running into problems modelling a nested hierarchical set of queries with levels more than 2.
Please advise of any sample code available anywhere.
For example I could do :
create table x1 ( id number , f1 varchar2(10));
creat table x2 ( id number , id_x1 number references x1(id) , f1 varchar2(10)) ;
create table x3 ( id number , id_x2 number references x2(id), f1 varchar2(10)) ;
To model this, I did
create type x3_typ as object ( id number, id_x2 number , f1 varchar2(10)) ;
create type x3_typ_t is table of x3_typ ;
create type x2_typ as object ( id number, id_x1 number , f1 varchar2(10), x3_list x3_typ_t ) ;
create type x2_typ_t is table of ref x2_typ ;
create type x1_typ as object ( id number
, f1 varchar2(10) , x2_list x2_typ_t ) ;
create or replace view x3_x2 as
select id , f1 , cast(multiset(select * from x3 ) as x3_typ_t ) as x3_list
If I try to use a view again like as given below, I get the Oracle inconsistent datatypes error.
create or replace view x2_x1 as
select id , f1 , cast(multiset(select * from x3_x2 ) as x2_typ_t ) as x2_list
I there a better way? Am I missing something? Please help.