Dynamic sql please help

Question

hi i want to write a stored procedure where i should return a reference cursor.... (var_refcursor)
i have to dynamically generate where conditions inside my stored procedure so i did something and finally generated the where conditions and saved it in a string
var_filter ='empno=value and ename=value and dept= value ) <--------- my string looks like this
now can i write like this?
execute immediate 'select * from table_emp where var_filter ;' into var_refcursor;
return var_refcursor;
2nd question) can i declare a cursor like this
cursor c1 is ( select distinct department as dept from dep_table;
minus
select distinct department as dept from emp_sample ; )
3rd question) how do i test the stored procedure whether it is returning the reference cursor or not..?( i want to see the rows that it returns
Edited by: user10887630 on Apr 15, 2009 8:27 AM
Edited by: user10887630 on Apr 15, 2009 8:34 AM

Answer 1

hi i have written the funtion like this am knowing how to test this..
CREATE OR REPLACE Function cif_function(content_in IN varchar2)
return sys_refcursor
IS
v_refcursor sys_refcursor;
total_val number(6);
str1 varchar2(1000) default null;
str2 varchar2(1000) default null;
str3 varchar2(1000) default null;
v_filter varchar2(1000)default null;
--v_sql varchar2(10);
-- opened a cursor for the querying the cifview that contains what static attributes are present for a particular contentname
cursor c1 is select key,const_val from rajesh_sample where Name='content_in';
BEGIN
FOR cif_record in c1
LOOP
str1 := concat(concat(concat(concat(str1,c1.key),'='),c1.const_val),' and ') ;
END LOOP;
END;
-- opened a cursor for the querying the cifview that does not what static attributes for a particular contentname
cursor c2 is ( select distinct attrib as s_att from rajesh_static_attributes
minus
select distinct key as s_att from rajesh_sample where Name='content_in'; )
BEGIN
FOR cif_static_superset in c2
LOOP
str2 := concat(concat(str2,c2.s_att),' is null and ');
END LOOP;
END;
str3 := concat(str1,str2);
v_filter :=rtrim(str3,' and ');
v_filter := rpad(rtrim(v_filter),';')
open v_refcursor for 'select * from ats_rules where v_filter';
return v_refcursor; -------------->returning the refcursor
end cif_function;
Edited by: user10887630 on Apr 15, 2009 9:56 AM