Oracle-L: RE: what pl/sql construct can return multiple rows?

From: Magaliff, Bill <Bill.Magaliff_at_lendware.com>
Date: Wed, 20 Mar 2002 05:48:21 -0800
Message-ID: <F001.0042E47B.20020320054821@fatcity.com>

Could not find any specific examples of this usage . . .

must it be inside a package? could it just be defined in a procedure?
why IN/OUT? What's being passed in?
why open with no fetch? what does that accomplish?

thanks much
bill

-----Original Message-----
Sent: Tue, March 19, 2002 12:19 PM
To: Multiple recipients of list ORACLE-L

Lots of examples avlbl from Concepts manual; also pl check asktom.com

Step 1) Declare a ref cursor inside a package

CREATE PACKAGE APACK AS
TYPE RefCurTyp IS REF CURSOR;
END APACK; Step 2) Employ the ref curosr IN OUT variable inside the procedure..note that the cursor is opened but not fetched..

PROCEDURE demo_ref (

      refcurvar IN OUT RefCurTyp,
      choice     NUMBER) IS
   BEGIN
      IF choice = 1 THEN
         OPEN refcurvar FOR SELECT * FROM emp;
      ELSIF choice = 2 THEN
         OPEN refcurvar FOR SELECT * FROM dept;
      ELSIF choice = 3 THEN
         OPEN refcurvar FOR SELECT * FROM sal;
      END IF;

END demo_ref;

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Author: Magaliff, Bill
INET: Bill.Magaliff_at_lendware.com

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