Oracle 儲存過程返回結果集|轉|

儲存過程返回結果集。*過程返回記錄集。

CREATE OR REPLACE PACKAGE pkg_test
AS
    TYPE myrctype IS REF CURSOR;
  
    PROCEDURE get (p_id NUMBER, p_rc OUT myrctype);
END pkg_test;
/
  
CREATE OR REPLACE PACKAGE BODY pkg_test
AS
    PROCEDURE get (p_id NUMBER, p_rc OUT myrctype)
    IS
       sqlstr   VARCHAR2 (500);
    BEGIN
       IF p_id = 0 THEN
          OPEN p_rc FOR
             SELECT ID, NAME, sex, address, postcode, birthday
               FROM student;
       ELSE
          sqlstr :=
             'select id,name,sex,address,postcode,birthday
            from student where id=:w_id';
          OPEN p_rc FOR sqlstr USING p_id;
       END IF;
    END get;
END pkg_test;
/
  
函式返回記錄集:
建立帶ref cursor定義的包和包體及函式：
CREATE OR REPLACE
package pkg_test as
/* 定義ref cursor型別
    不加return型別，為弱型別，允許動態sql查詢，
    否則為強型別，無法使用動態sql查詢;
*/
   type myrctype is ref cursor;  
   
--函式申明
   function get(intID number) return myrctype;
end pkg_test;
/
   
CREATE OR REPLACE
package body pkg_test as
--函式體
    function get(intID number) return myrctype is
      rc myrctype;  --定義ref cursor變數
      sqlstr varchar2(500);
    begin
      if intID=0 then
         --靜態測試，直接用select語句直接返回結果
         open rc for select id,name,sex,address,postcode,birthday from
student;
      else
         --動態sql賦值，用:w_id來申明該變數從外部獲得
         sqlstr := 'select id,name,sex,address,postcode,birthday from
student where id=:w_id';
         --動態測試，用sqlstr字串返回結果，用using關鍵詞傳遞引數
         open rc for sqlstr using intid;
      end if;
   
      return rc;
    end get;
   
end pkg_test;