Answer / takkola

hi..

Refcursor is nothing but dynamic cursor... it means u can
change the cursor definition at run time... unless like
normal cursor where u define and declare once.

thanx..

Answer / srinivasa reddy k

In Oracle RefCursor is a cursor where we can change the
select statement dynamically.

First a Refcursor Variable should be declared in
Declaration Part

Refcursor Variable is like a normal variable, I.e. we can
change the value of variable at any time..,similarly now
Refcursor Variable can be changed with any sql query...

Answer / shaik jeelan basha

By using Ref cursor we can change the select statement
dynamically at runtime which is available in the cursor
definition based on some validation.For this we need to
define ref cursor type by using following syntax.

type <type_name> is ref cursor return <return_type>;

here <type_name> is the name of the ref cursor and
<return_type> will be the return type of ref cursor it may
be %type/%rowtype/record type/plsql table type/nested table
type/varray type.

if <return_type> is mentioned we will called it as strong
ref cursor.

if <return_type> is not mentioned we will called it as weak
ref cursor.

after this we need to define ref cursor variable by using
the following syntax.

v_variable_name ref_cursor_type_name;

then based on validations we can change the ref cursor
dynamically.

for example
------------------
declare
type ref_cur is ref cursor;
v_ref_cur ref_cur;
v_deptno emp.deptno%type;
begin
select deptno into v_deptno from emp where empno=7788;
if v_deptno=20 then
open v_ref_cur for select * from emp;
elsif v_deptno=30 then
open v_ref_cur for select * from dept;
else
open v_ref_cur for select * from salgrade;
end if;
end;

Answer / venki

refcusor is globAL DECLARATION FOR EVERY AT THE TIME OF
OPENING CURSOR WE PASS SELECT STATEMENT DYNAMICALLY

Answer / kishore

ref cursor is a dynamic cursor.ref cursor returns different
work area in memory.
THere are two types of cursor variable
1)week ref cursor
: if we don't include a return clause in the cursor.
2)strong ref cursor
:A ref cursor with a return clause.

Answer / sumanth

Ref Cursor is a Cursor, We can pass a cursor as a variable into another cursor as a parameter

can we pass bind variablein lexical parameter?

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