How to call a sp that returns multi_columns from another sp

Question

Hi,
Can anybody help me to solve this problem? I called a sp which
returns ename, sal using a weak ref cursor from another sp. Is
it possible to do this? or I did something wrong? The error
messages are:
ERROR at line 1:
ORA-00904: invalid column name
ORA-06512: at "SCOTT.TESTPKG", line 14
ORA-06512: at line 1
below is my code:
create or replace package testpkg AS           //12/19/01
TYPE sumCur IS REF CURSOR;
TYPE estType IS REF CURSOR;
     function totalNo (
          dno IN NUMBER)
          RETURN estType;
     procedure test(
          sum_cv IN OUT NOCOPY sumCur);
END;
CREATE OR REPLACE PACKAGE BODY testpkg AS
     function totalNo (
          dno IN NUMBER)
          RETURN estType IS est_cv estType;
          BEGIN
          OPEN est_cv FOR SELECT ename, sal FROM emp
where deptno = dno and job = 'MANAGER';
          RETURN est_cv;
     END totalno;          
     procedure test(
          sum_cv IN OUT NOCOPY sumCur) AS
          sql_statement VARCHAR2(100);
     BEGIN
          sql_statement :='SELECT dname, totalNo(deptno)
from dept ';
          OPEN sum_cv FOR sql_statement ;
     END test;     
END;
Thanks

Answer 1

The error that you are getting is because totalNo(deptno) needs
to be testpkg.totalNo(deptno), but that is not the only error.
Maybe you can use something like this:
SQL> CREATE OR REPLACE PACKAGE testpkg
  2  AS
  3    TYPE sumcur       IS         REF CURSOR;
  4    FUNCTION totalno
  5      (dno         IN            NUMBER)
  6      RETURN                     VARCHAR2;
  7    PROCEDURE test
  8      (sum_cv      IN OUT        sumcur);
  9  END testpkg;
10  /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY testpkg
  2  AS
  3    FUNCTION totalno
  4      (dno         IN            NUMBER)
  5      RETURN                     VARCHAR2
  6    IS
  7      est_cv                     VARCHAR2 (30);
  8    BEGIN
  9      SELECT ename || ' ' || TO_CHAR (sal)
10      INTO   est_cv
11      FROM   emp
12      WHERE  deptno = dno
13      AND    job = 'MANAGER';
14      RETURN est_cv;
15    END totalno;
16    PROCEDURE test
17      (sum_cv      IN OUT        sumcur)
18    AS
19      sql_statement              VARCHAR2 (100);
20    BEGIN
21      sql_statement :=
22         ' SELECT dname, testpkg.totalno (deptno)'
23      || ' FROM dept';
24      OPEN sum_cv FOR sql_statement;
25    END test;
26  END testpkg;
27  /
Package body created.
SQL> VARIABLE g_ref REFCURSOR
SQL> EXEC testpkg.test (:g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
DNAME
TESTPKG.TOTALNO(DEPTNO)
ACCOUNTING
CLARK 2450
RESEARCH
JONES 2975
SALES
BLAKE 2850
DNAME
TESTPKG.TOTALNO(DEPTNO)
OPERATIONS