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Oracle中定义package以及存储过程的使用使用scott账户下的dept表;select * from dept order by deptno;10 ACCOUNTING NEW YORK20 RESEARCH DALLAS30 SALES CHICAGO40 OPERATIONS BOSTON为了演示方便,插入一条数据:insert into dept(deptno, dname, loc) values(50,"SYSTEM", "NEW YORK");新插入的记录为:50 SYSTEM NEW YORK 我们主要演示在package中存储过程的返回类型为pipelined,cursor 和 value三种。1.返回类型为pipelined。 create or REPLACE type dept_obj is OBJECT( DEPTNO NUMBER(2,0), DNAME VARCHAR2(14 BYTE) );create or REPLACE type dept_obj_type AS table of dept_obj;2.定义package 和package body。------------------------------------------------------create or replace package SPTest
is
/*return a pipelined demo start*/
type dept_data_rec_type is RECORD(
  DEPTNO NUMBER(2,0),
   DNAME VARCHAR2(14)
);type dept_ref_type is REF CURSOR;function getDept(in_loc IN VARCHAR2) return dept_obj_type pipelined;
/*return a pipelined demo end*//*return a cursor demo start*/
FUNCTION getDeptInfo(in_deptno IN dept.deptno%TYPE) RETURN dept_ref_type;
/*return a cursor demo end*//* return a varchar value start */
function getName(in_deptno in number) RETURN VARCHAR2;
/* return a varchar value end */
end SPTest;
/
-----------------------------------------------------------------------------------------------
create or replace package body SPTest
is
  /*return a pipelined demo start*/
  function getDept(in_loc IN VARCHAR2) return dept_obj_type pipelined is
    l_dept_obj dept_obj :=dept_obj(null, null);
    dept_ref_type_cursor dept_ref_type;
    dept_data_rec        dept_data_rec_type;
  begin
    open dept_ref_type_cursor
    for select deptno, dname from dept where loc = in_loc;
 
    loop
    fetch dept_ref_type_cursor into dept_data_rec;
    exit when dept_ref_type_cursor%NOTFOUND;
    l_dept_obj.DEPTNO := dept_data_rec.DEPTNO;
    l_dept_obj.DNAME := dept_data_rec.DNAME;
 
    pipe row(l_dept_obj);
    end loop;
    close dept_ref_type_cursor;
    RETURN ;
  end getDept;
  /*return a pipelined demo end*/
 
  /*return a cursor demo start*/
  FUNCTION getDeptInfo(in_deptno IN dept.deptno%TYPE) RETURN dept_ref_type
  AS
          dept_ref_type_cursor dept_ref_type;       
   BEGIN
   
   OPEN dept_ref_type_cursor FOR
          SELECT deptno, dname, loc FROM dept where deptno = in_deptno;
   
   RETURN dept_ref_type_cursor;
   
   END getDeptInfo;
  /*return a cursor demo end*/
 
  /* return a varchar value start */
  function getName(in_deptno in number) RETURN VARCHAR2
  as rtn_deptname VARCHAR2(100);
  begin
    select dname into rtn_deptname from dept where deptno = in_deptno;
    RETURN rtn_deptname;
  end getName;
  /* return a varchar value start */
 
end SPTest;
/------------------------------------------------------最后,执行存储过程。/*返回pipelined table */select deptno, dname from table(SPTest.getDept("NEW YORK")) order by deptno;/*返回cursor*/select SPTest.getDeptInfo(10) from dual;/*返回具体值*/ select SPTest.getName(50) from dual;更多Oracle相关信息见Oracle 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=12本文永久更新链接地址