Table of record type in cursor

Question

declare
type r_original is record
(column_name varchar2(30),
column_id number(2),
column_TYPE varchar2(30),
client_spec varchar2(2));
type t_original is table of r_original index by pls_integer;
l_original t_original;
begin
select column_name,column_id,
decode(data_type,'DATE','timestamp','TIMESTAMP(6)','timestamp','NUMBER' ,'int','VARCHAR2','string','string') data_type,
'N' as client_spec bulk collect into l_original
from dba_tab_columns
where table_name = l_s2
and owner = l_s1
order by column_id ;
-----------------this cursor i want to select value from l_original
for rec in ( select data_type FROM l_original)--,column_id, data_type COLUMN_VALUE -
loop
null ;- dbms_output.put_line (rec.column_name || rec.data_type);
END LOOP;
end

Answer 1

DA wrote:
or is there any way to compare two nested tables with out using two loopsWe can use SET operations to compare PL/SQL collections but there is a catch. They only work with simple collections i.e. those which have a single element like this:
type nnt is table of number(8,0);However operations such as MULTISET EXCEPT work with multi-attribute collections such as you've defined. Attempting to do so will hurl PLS-00306.
What you need to do is define SQL Types for the record and the nested table. When you declare the object representing the record you need to include a MAP member function which tells the database how to compare two two instances of that type. Find out more.
Adrian Billington wrote a good introduction to comparing collections. [url http://www.oracle-developer.net/display.php?id=303]Read it here.
Nevertheless, the most efficicient way of filtering records remains the queries we start with.
Cheers, APC
Edited by: APC on Aug 8, 2012 8:09 AM