oracle - 在 pl/sql 集合中选择多个列

Question

实际上我已经创建了以下程序，它工作正常。

CREATE or REPLACE PROCEDURE GET_NOS(
firstDate IN DATE,
secondDate IN DATE,
thirdDate IN DATE,
fourthDate IN DATE,
test IN VARCHAR2,
Slnt_Entity OUT TEST.RefCsr
)
AS
 DemoTable CRITERIA_LIST_TABLE;
 BEGIN


SELECT column1 BULK COLLECT INTO DemoTable FROM opr_test where call_date between firstDate AND secondDate AND id=test
MINUS
SELECT column1 FROM opr_test where call_date between thirdDate AND fourthDate AND id=test;


OPEN Slnt_Entity FOR SELECT * FROM TABLE(
                                            CAST (
                                                    DemoTable AS CRITERIA_LIST_TABLE
                                                 )
                                    ) Nos;

END;
/

2. 第二

create or replace TYPE "CRITERIA_LIST_TABLE" as table of varchar2(20);
/

1. 第三

   create or replace PACKAGE "TEST"
   AS
   TYPE RefCsr IS REF CURSOR;
   END TEST;
    /
   

   现在我想像这样更改我的查询

   SELECT column1,column2 BULK COLLECT INTO DemoTable FROM opr_test where call_date between firstDate AND secondDate AND id=test
   MINUS
   SELECT column1,column2 FROM opr_test where call_date between thirdDate AND fourthDate AND id=test;
   

所以我改变了程序

CREATE or REPLACE PROCEDURE GET_NOS(
firstDate IN DATE,
secondDate IN DATE,
thirdDate IN DATE,
fourthDate IN DATE,
test IN VARCHAR2,
Slnt_Entity OUT TEST.RefCsr
 )
AS

CURSOR c1 IS SELECT column1,column2 FROM opr_test;
  create or replace TYPE "ABC" IS TABLE OF c1%ROWTYPE;
DemoTable ABC;

BEGIN


 SELECT column1 BULK COLLECT INTO DemoTable FROM opr_test where call_date between firstDate AND secondDate AND id=test
 MINUS
 SELECT column1 FROM opr_test where call_date between thirdDate AND fourthDate AND id=test;


  OPEN Slnt_Entity FOR SELECT * FROM TABLE(
                                            CAST (
                                                    DemoTable AS CRITERIA_LIST_TABLE
                                                 )
                                    ) Nos;

  END;
  /

但这是不正确的，请告诉我程序的样子

Answer 1

user595014，帮助您解决您遇到的问题，并在 StackOverflow 上提出几个问题。阅读 ORACLE-BASE 中关于创建和返回 oracle REF_CURSOR 类型的这篇文章。

如果您阅读了所有内容，它还会为您提供有关如何将 ref_cursor 返回到调用 Java 程序的演示（您在上一个问题中问过我的问题）。

它将为您提供解决问题所需的一切。

http://www.oracle-base.com/articles/misc/UsingRefCursorsToReturnRecordsets.php