PKG_COLLECTION_LHR 存储过程或函数返回集合类型
存储过程或函数可以返回集合类型，方法很多，今天整理在一个包中，其它情况可照猫画虎。
CREATE OR REPLACE PACKAGE PKG_COLLECTION_LHR AUTHID CURRENT_USER AS
-----------------------------------------------------------------------------------
-- Created on 2013-05-24 14:37:41 by lhr
--Changed on 2013-05-24 14:37:41 by lhr
-- function： 返回各种各样的集合
/*
DROP TYPE obj_all_address_lhr FORCE;
DROP TYPE typ_all_address_lhr FORCE;
CREATE OR REPLACE TYPE obj_all_address_lhr AS OBJECT(
P_LEVEL NUMBER(18),
EMPNO NUMBER(18),
ENAME VARCHAR2(4000),
MGR NUMBER(18),
NAME_ALL VARCHAR2(4000),
ALL_NAME_LEVEL VARCHAR2(4000),
ROOT VARCHAR2(4000),
IS_LEAF VARCHAR2(10)
);
CREATE OR REPLACE TYPE typ_all_address_lhr AS TABLE OF obj_all_address_lhr;
*/
-----------------------------------------------------------------------------------
-----------------------------变量--------------------------------------
TYPE TYPE_CURSOR IS REF CURSOR;
TYPE TYPE_RECORD IS RECORD(
P_LEVEL NUMBER(18),
EMPNO NUMBER(18),
ENAME VARCHAR2(4000),
MGR NUMBER(18),
NAME_ALL VARCHAR2(4000),
ALL_NAME_LEVEL VARCHAR2(4000),
ROOT VARCHAR2(4000),
IS_LEAF VARCHAR2(10));
TYPE T_RECORD IS TABLE OF TYPE_RECORD;
-----------------------------存过--------------------------------------
--系统游标 --推荐
PROCEDURE P_SYS_REFCURSOR_LHR(P_EMPNO IN NUMBER,
CUR_SYS OUT SYS_REFCURSOR);
-- 自定义游标
PROCEDURE P_SYS_REFCURSOR_LHR_01(P_EMPNO IN NUMBER,
CUR_SYS OUT TYPE_CURSOR);
---索引表 --包级别
PROCEDURE P_INDEX_TABLE_PKG_LHR(P_EMPNO IN NUMBER,
O_T_RECORD OUT T_RECORD);
------------------------------函数-------------------------------------
--系统游标
FUNCTION F_GET_SYS_REFCURSOR_LHR(P_EMPNO NUMBER) RETURN SYS_REFCURSOR;
--索引表 --包 级别 不能通过sql语句直接查询
FUNCTION F_GET_INDEX_TABLE_PKG_LHR(P_EMPNO NUMBER) RETURN T_RECORD;
--索引表 --schema 级别 可以直接查询
/*select D.* from table( f_get_all_address_lhr(306628323)) D;
select * from the(select f_get_all_address_lhr(306628323) from dual);*/
FUNCTION F_GET_INDEX_TABLE_SCHEMA_LHR(P_EMPNO NUMBER)
RETURN TYP_ALL_ADDRESS_LHR;
---- 索引表 --schema 级别 --管道化 可以直接查询
FUNCTION F_GET_INDEX_TABLE_PIPE_LHR(P_EMPNO NUMBER)
RETURN TYP_ALL_ADDRESS_LHR
PIPELINED;
END PKG_COLLECTION_LHR;
/
CREATE OR REPLACE PACKAGE BODY PKG_COLLECTION_LHR AS
PROCEDURE P_SYS_REFCURSOR_LHR(P_EMPNO IN NUMBER,
CUR_SYS OUT SYS_REFCURSOR) IS
/*DECLARE
CUR_A SYS_REFCURSOR;
R_TYPE_RECORD PKG_COLLECTION_LHR.TYPE_RECORD;
BEGIN
PKG_COLLECTION_LHR.P_SYS_REFCURSOR_LHR(7900, CUR_A);
LOOP
FETCH CUR_A
INTO R_TYPE_RECORD;
EXIT WHEN CUR_A%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(R_TYPE_RECORD.EMPNO);
END LOOP;
END;
*/
BEGIN
OPEN CUR_SYS FOR
SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' || T.ENAME || '(' ||
T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO;
EXCEPTION
WHEN OTHERS THEN
NULL;
END P_SYS_REFCURSOR_LHR;
------------------------------------------------------------------------------------------------------
PROCEDURE P_SYS_REFCURSOR_LHR_01(P_EMPNO IN NUMBER,
CUR_SYS OUT TYPE_CURSOR) IS
/* --测试：
DECLARE
CUR_A PKG_COLLECTION_LHR.TYPE_CURSOR;
R_TYPE_RECORD PKG_COLLECTION_LHR.TYPE_RECORD;
BEGIN
PKG_COLLECTION_LHR.P_SYS_REFCURSOR_LHR_01(7809, CUR_A);
LOOP
FETCH CUR_A
INTO R_TYPE_RECORD;
EXIT WHEN CUR_A%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(R_TYPE_RECORD.EMPNO);
END LOOP;
END;
*/
BEGIN
OPEN CUR_SYS FOR
SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' || T.ENAME || '(' ||
T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO;
EXCEPTION
WHEN OTHERS THEN
NULL;
END P_SYS_REFCURSOR_LHR_01;
------------------------------------------------------------------------------------------------------
PROCEDURE P_INDEX_TABLE_PKG_LHR(P_EMPNO IN NUMBER,
O_T_RECORD OUT T_RECORD) IS
/* --测试：
DECLARE
CUR_A PKG_COLLECTION_LHR.TYPE_CURSOR;
R_TYPE_RECORD PKG_COLLECTION_LHR.TYPE_RECORD;
BEGIN
PKG_COLLECTION_LHR.P_SYS_REFCURSOR_LHR_01(306628323, CUR_A);
LOOP
FETCH CUR_A
INTO R_TYPE_RECORD;
EXIT WHEN CUR_A%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(R_TYPE_RECORD.EMPNO);
END LOOP;
END;
*/
R_TYPE TYPE_RECORD;
BEGIN
O_T_RECORD := T_RECORD(); -- 注意这句不能丢 不然会报：ORA-06531: 引用未初始化的收集
FOR CUR IN (SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' ||
T.ENAME || '(' || T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO) LOOP
R_TYPE.P_LEVEL := CUR.P_LEVEL;
R_TYPE.ALL_NAME_LEVEL := CUR.ALL_NAME_LEVEL;
R_TYPE.ROOT := CUR.ROOT;
R_TYPE.IS_LEAF := CUR.IS_LEAF;
O_T_RECORD.EXTEND;
O_T_RECORD(O_T_RECORD.LAST) := R_TYPE;
END LOOP;
EXCEPTION
WHEN OTHERS THEN
NULL;
END P_INDEX_TABLE_PKG_LHR;
------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------
FUNCTION F_GET_SYS_REFCURSOR_LHR(P_EMPNO NUMBER) RETURN SYS_REFCURSOR IS
-----------------------------------------------------------------------------------
-- Created on 2013-05-24 14:37:41 by lhr
--Changed on 2013-05-24 14:37:41 by lhr
-- function：
--测试： SELECT pkg_collection_lhr.f_get_SYS_REFCURSOR_lhr(306628323) FROM dual;
-----------------------------------------------------------------------------------
CUR_SYS SYS_REFCURSOR;
BEGIN
OPEN CUR_SYS FOR
SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' || T.ENAME || '(' ||
T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO;
RETURN CUR_SYS;
EXCEPTION
WHEN OTHERS THEN
NULL;
END;
------------------------------------------------------------------------------------------------------
FUNCTION F_GET_INDEX_TABLE_PKG_LHR(P_EMPNO NUMBER) RETURN T_RECORD IS
O_T_RECORD T_RECORD;
R_TYPE TYPE_RECORD;
/*DECLARE
RESULT pkg_collection_lhr.t_record;
BEGIN
-- Call the function
RESULT := pkg_collection_lhr.f_get_index_table_pkg_lhr(P_EMPNO => 306628323);
dbms_output.put_line(RESULT(1).id);
END;*/
BEGIN
O_T_RECORD := T_RECORD(); -- 注意这句不能丢 不然会报：ORA-06531: 引用未初始化的收集
FOR CUR IN (SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' ||
T.ENAME || '(' || T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO) LOOP
R_TYPE.P_LEVEL := CUR.P_LEVEL;
R_TYPE.ALL_NAME_LEVEL := CUR.ALL_NAME_LEVEL;
R_TYPE.ROOT := CUR.ROOT;
R_TYPE.IS_LEAF := CUR.IS_LEAF;
O_T_RECORD.EXTEND;
O_T_RECORD(O_T_RECORD.LAST) := R_TYPE;
RETURN O_T_RECORD;
END LOOP;
END F_GET_INDEX_TABLE_PKG_LHR;
-----------------------------------------------------------------------------------
-- Created on 2012/8/20 11:33:07 by lhr
--Changed on 2012/8/20 11:33:07 by lhr
-- function：
/*select D.* from table( f_get_all_address_lhr(306628323)) D;
select * from the(select f_get_all_address_lhr(306628323) from dual);*/
-----------------------------------------------------------------------------------
FUNCTION F_GET_INDEX_TABLE_SCHEMA_LHR(P_EMPNO NUMBER)
RETURN TYP_ALL_ADDRESS_LHR IS
SP_TABLE_LHR TYP_ALL_ADDRESS_LHR := TYP_ALL_ADDRESS_LHR();
-- sp_table_lhr typ_all_address_lhr ;
BEGIN
SELECT OBJ_ALL_ADDRESS_LHR(P_LEVEL,
EMPNO,
ENAME,
MGR,
NAME_ALL,
ALL_NAME_LEVEL,
ROOT,
IS_LEAF)
BULK COLLECT
INTO SP_TABLE_LHR
FROM (SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' || T.ENAME || '(' ||
T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO);
---或者用如下的for循环
/* FOR cur IN (SELECT LEVEL p_level,
t.id,
t.parentid,
t.assemblename,
t.addresslevel,
(SELECT d.description
FROM x_dictionary d
WHERE d. classid = 'ADDRESS'
AND d.attributeid = 'ADDRESSLEVEL'
AND d.value = t.addresslevel) add_level_description,
(lpad(' ', 6 * (LEVEL - 1)) || LEVEL || ':' || t.name || '(' || t.id || ')') NAME_ALL,
substr(sys_connect_by_path(t.name, '=>'), 3) all_name_level,
connect_by_root(t.name) root,
decode(connect_by_isleaf, 1, 'Y', 0, 'N') is_leaf
FROM xb_address t
START WITH t.id = P_EMPNO
CONNECT BY nocycle PRIOR t.parentid = id) LOOP
sp_table_lhr.EXTEND;
sp_table_lhr(sp_table_lhr.last) := obj_all_address_lhr('',
'',
'',
'',
'',
'',
'',
'',
'',
'');
sp_table_lhr(sp_table_lhr.last).p_level := cur.p_level;
sp_table_lhr(sp_table_lhr.last).id := cur.id;
sp_table_lhr(sp_table_lhr.last).parentid := cur.parentid;
END LOOP;
*/
---或者用如下的for循环
/* FOR cur IN (SELECT LEVEL p_level,
t.id,
t.parentid,
t.assemblename,
t.addresslevel,
(SELECT d.description
FROM x_dictionary d
WHERE d. classid = 'ADDRESS'
AND d.attributeid = 'ADDRESSLEVEL'
AND d.value = t.addresslevel) add_level_description,
(lpad(' ', 6 * (LEVEL - 1)) || LEVEL || ':' || t.name || '(' || t.id || ')') NAME_ALL,
substr(sys_connect_by_path(t.name, '=>'), 3) all_name_level,
connect_by_root(t.name) root,
decode(connect_by_isleaf, 1, 'Y', 0, 'N') is_leaf
FROM xb_address t
START WITH t.id = P_EMPNO
CONNECT BY nocycle PRIOR t.parentid = id) LOOP
sp_table_lhr.EXTEND;
sp_table_lhr(sp_table_lhr.last) := obj_all_address_lhr(cur.p_level,
cur.id,
cur.parentid,
cur.assemblename,
cur.addresslevel,
cur.add_level_description,
cur.NAME_ALL,
cur.all_name_level,
cur.root,
cur.is_leaf);
END LOOP;
*/
RETURN SP_TABLE_LHR;
END F_GET_INDEX_TABLE_SCHEMA_LHR;
------------------------------------------------------------------------------------------------------
FUNCTION F_GET_INDEX_TABLE_PIPE_LHR(P_EMPNO NUMBER)
RETURN TYP_ALL_ADDRESS_LHR
PIPELINED IS
SP_TABLE_LHR OBJ_ALL_ADDRESS_LHR;
BEGIN
FOR CUR IN (SELECT LEVEL P_LEVEL,
T.EMPNO,
T.ENAME,
T.MGR,
(LPAD(' ', 6 * (LEVEL - 1)) || LEVEL || ':' ||
T.ENAME || '(' || T.EMPNO || ')') NAME_ALL,
SUBSTR(SYS_CONNECT_BY_PATH(T.ENAME, '=>'), 3) ALL_NAME_LEVEL,
CONNECT_BY_ROOT(T.ENAME) ROOT,
DECODE(CONNECT_BY_ISLEAF, 1, 'Y', 0, 'N') IS_LEAF
FROM SCOTT.EMP T
START WITH MGR IS NULL
CONNECT BY NOCYCLE MGR = PRIOR EMPNO) LOOP
SP_TABLE_LHR := OBJ_ALL_ADDRESS_LHR(CUR.P_LEVEL,
CUR.Empno,
CUR.Ename,
CUR.Mgr,
cur.NAME_ALL,
CUR.ALL_NAME_LEVEL,
CUR.ROOT,
CUR.IS_LEAF);
PIPE ROW(SP_TABLE_LHR);
END LOOP;
RETURN;
END F_GET_INDEX_TABLE_PIPE_LHR;
END PKG_COLLECTION_LHR;
/
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● 本文作者：小麦苗，只专注于数据库的技术，更注重技术的运用
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