将mysql过程转换为pl-sql过程

Question

我正在尝试将我的MySQL项目转换为PL / SQL，以实现作为顶级应用程序。我有关于转换存储过程的问题。当我在MySQL中使用它时，它正在工作，但它在PL / SQL中出错。我已阅读有关PL / SQL语法的内容，我认为我已完成必要的更改以将存储过程转换为PL / SQL格式。

我的代码如下：

create or replace PROCEDURE findSuitableRoom
(
   varBuilding_id IN NUMBER,
   varLecture_block_id IN NUMBER,
   varWeek_of_the_day IN NUMBER
) AS
BEGIN 
   SELECT A.room_id
   FROM 
   (
    SELECT room_id, room_number, r.building_id FROM building INNER JOIN
      (SELECT room.room_id, room_number, ruilding_id FROM room INNER JOIN room_building_location 
      ON room.room_id=room_building_location.room_id) AS R 
    ON building.building_id=r.building_id WHERE r.building_id=varBuilding_id 
   ) AS A
   LEFT JOIN
   (
   SELECT room_id FROM timetable WHERE timetable.lecture_block_id=varLecture_block_id AND timetable.week_of_the_day=varWeek_of_the_day
   ) AS B 
   ON A.room_id=B.room_id WHERE B.room_id IS NULL;
END;

Answer 1

我认为Apex是一个Oracle产品，您应该能够将MySQL程序转换为PL / SQL程序并在Apex代码中使用它。您需要返回REF CURSOR，如下面的转换示例所示。以下是Oracle社区网站上帖子的link，其中包含与Apex相关的其他示例代码。您需要向下滚动到页面所在的位置http://apex.oracle.com/pls/apex/f?p=34598:1，您将看到其下方的代码

您应该能够使用此处的示例代码和下面转换的过程来完成转换。

CREATE OR REPLACE PACKAGE sample_ref_cursor_pkg AS 
  TYPE sample_ref_cursor IS REF CURSOR;
END Types; 
/
create or replace PROCEDURE findSuitableRoom
(
   varBuilding_id IN NUMBER,
   varLecture_block_id IN NUMBER,
   varWeek_of_the_day IN NUMBER
  ,out_cursor OUT sample_ref_cursor_pkg.sample_ref_cursor
) AS
BEGIN 
     OPEN out_cursor 
      FOR
   SELECT A.room_id
   FROM 
   (
    SELECT room_id, room_number, r.building_id FROM building INNER JOIN
      (SELECT room.room_id, room_number, ruilding_id FROM room INNER JOIN     room_building_location 
      ON room.room_id=room_building_location.room_id) AS R 
    ON building.building_id=r.building_id WHERE r.building_id=varBuilding_id 
   ) AS A
   LEFT JOIN
   (
   SELECT room_id FROM timetable WHERE     timetable.lecture_block_id=varLecture_block_id AND     timetable.week_of_the_day=varWeek_of_the_day
   ) AS B 
   ON A.room_id=B.room_id WHERE B.room_id IS NULL;
END;

希望这有帮助。