Question : dynamic_cursor

If i have a procedure with a cursor like this

            CURSOR my_list
            IS
              SELECT * FROM TABLE1, TABLE 2
              WHERE.

              AND vendor like p_vendcode


            Users want to be able to run query with filter on vendcode and without filter.

            is there a way the same cursor based on the value passed with "p_vendcode" or do i need to make two cursors
            and use the appropriate one.

The cursor is very long with several UNIONS, etc. It would be easier if i can modify it

I think one option is to change that to bind variable and then do something like

If (p_flag is 'F') Then
open my_cursor using :p_vendcode
else
open my _cursor using 1=1
end if;

Answer : dynamic_cursor

Check out the following simple testcase.

                       
         
           
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             drop table tab1 purge;
create table tab1 (vendor char(1));

insert into tab1 values('A');
insert into tab1 values('B');
insert into tab1 values('D');
commit;


create or replace procedure myProc (p_filter in char, p_vendcode in char)
is
	my_var	varchar2(100);
	myCur	sys_refcursor;
	myResult char(1);
begin

	My_var := 'select vendor from tab1 where vendor like decode( ''' || p_filter || ''',''A'',''%'',''F'', ''' || p_vendcode|| ''')';

	open myCur for my_var;
	fetch myCur into myResult;
	dbms_output.put_line('got: ' || myResult);
	close myCur;
end;
/

exec myProc('A','B');
exec myProc('F','D');

           
         