PL/SQL 打印存储过程返回的引用游标

发布于 2024-11-03 14:45:47 字数 912 浏览 6 评论 0原文

如何从存储过程(OUT 变量)返回的引用游标中获取数据并将结果行打印到 SQL*PLUS 中的 STDOUT?

ORACLE存储过程:

PROCEDURE GetGrantListByPI(p_firstname IN VARCHAR2, p_lastname IN VARCHAR2,
p_orderby IN VARCHAR2, p_cursor OUT grantcur);

PL/SQL:

SET SERVEROUTPUT ON;

DECLARE
  TYPE r_cursor IS REF CURSOR;
  refCursor r_cursor;

  CURSOR grantCursor IS
    SELECT last_name, first_name
    FROM ten_year_pis
    WHERE year_added = 2010;

  last_name VARCHAR2(100);
  first_name VARCHAR2(100);

BEGIN
  OPEN grantCursor;
  FETCH grantCursor INTO last_name, first_name;

  WHILE grantCursor%FOUND LOOP
    PMAWEB_PKG.GetGrantListByPI(last_name, first_name, 'last_name', refCursor);

    --HOW DO I LOOP THROUGH THE RETURNED REF CURSOR (refCursor)
    --AND PRINT THE RESULTING ROWS TO STDOUT?

    FETCH grantCursor into last_name, first_name;
  END LOOP;
  CLOSE grantCursor;
END;
/

How can I fetch from a ref cursor that is returned from a stored procedure (OUT variable) and print the resulting rows to STDOUT in SQL*PLUS?

ORACLE stored procedure:

PROCEDURE GetGrantListByPI(p_firstname IN VARCHAR2, p_lastname IN VARCHAR2,
p_orderby IN VARCHAR2, p_cursor OUT grantcur);

PL/SQL:

SET SERVEROUTPUT ON;

DECLARE
  TYPE r_cursor IS REF CURSOR;
  refCursor r_cursor;

  CURSOR grantCursor IS
    SELECT last_name, first_name
    FROM ten_year_pis
    WHERE year_added = 2010;

  last_name VARCHAR2(100);
  first_name VARCHAR2(100);

BEGIN
  OPEN grantCursor;
  FETCH grantCursor INTO last_name, first_name;

  WHILE grantCursor%FOUND LOOP
    PMAWEB_PKG.GetGrantListByPI(last_name, first_name, 'last_name', refCursor);

    --HOW DO I LOOP THROUGH THE RETURNED REF CURSOR (refCursor)
    --AND PRINT THE RESULTING ROWS TO STDOUT?

    FETCH grantCursor into last_name, first_name;
  END LOOP;
  CLOSE grantCursor;
END;
/

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评论(5

但可醉心 2024-11-10 14:45:47

注意:此代码未经测试

为您的 refCursor 返回类型定义一条记录,将其称为 rec。例如:

TYPE MyRec IS RECORD (col1 VARCHAR2(10), col2 VARCHAR2(20), ...);  --define the record
rec MyRec;        -- instantiate the record

从过程中返回 refcursor 后,您可以在注释所在的位置添加以下代码:

LOOP
  FETCH refCursor INTO rec;
  EXIT WHEN refCursor%NOTFOUND;
  dbms_output.put_line(rec.col1||','||rec.col2||','||...);
END LOOP;

Note: This code is untested

Define a record for your refCursor return type, call it rec. For example:

TYPE MyRec IS RECORD (col1 VARCHAR2(10), col2 VARCHAR2(20), ...);  --define the record
rec MyRec;        -- instantiate the record

Once you have the refcursor returned from your procedure, you can add the following code where your comments are now:

LOOP
  FETCH refCursor INTO rec;
  EXIT WHEN refCursor%NOTFOUND;
  dbms_output.put_line(rec.col1||','||rec.col2||','||...);
END LOOP;
在你怀里撒娇 2024-11-10 14:45:47

您可以在 SQLPlus 级别使用绑定变量来执行此操作。当然,您几乎无法控制输出的格式。

VAR x REFCURSOR;
EXEC GetGrantListByPI(args, :x);
PRINT x;

You can use a bind variable at the SQLPlus level to do this. Of course you have little control over the formatting of the output.

VAR x REFCURSOR;
EXEC GetGrantListByPI(args, :x);
PRINT x;
夏末染殇 2024-11-10 14:45:47

如果要打印 select 子句中的所有列,可以使用 autoprint 命令。

CREATE OR REPLACE PROCEDURE sps_detail_dtest(v_refcur OUT sys_refcursor)
AS
BEGIN
  OPEN v_refcur FOR 'select * from dummy_table';
END;

SET autoprint on;

--calling the procedure
VAR vcur refcursor;
DECLARE 
BEGIN
  sps_detail_dtest(vrefcur=>:vcur);
END;

希望这能为您提供替代解决方案

If you want to print all the columns in your select clause you can go with the autoprint command.

CREATE OR REPLACE PROCEDURE sps_detail_dtest(v_refcur OUT sys_refcursor)
AS
BEGIN
  OPEN v_refcur FOR 'select * from dummy_table';
END;

SET autoprint on;

--calling the procedure
VAR vcur refcursor;
DECLARE 
BEGIN
  sps_detail_dtest(vrefcur=>:vcur);
END;

Hope this gives you an alternate solution

巷雨优美回忆 2024-11-10 14:45:47

更简单的选择是使用DBMS_SQL.return_result()

假设您的包/过程/光标规格如下。

    create or replace PACKAGE my_package IS
    
    TYPE my_ref_cursor_type IS REF CURSOR;
    
    PROCEDURE my_procedure (
        p_in_param1     IN     VARCHAR2, 
        p_in_param2     IN     VARCHAR2, 
        p_in_param3     IN     VARCHAR2, 
        p_my_ref_cursor OUT    my_ref_cursor_type,
        p_err_code      OUT    NUMBER,
        p_err_msg       OUT    VARCHAR2   
        );
    
    END my_package;

尝试从您的 sql 开发人员工作表中调用该过程

SET SERVEROUTPUT ON;

DECLARE

  P_MY_REF_CURSOR my_schema.my_package.my_ref_cursor_type;
  P_ERR_CODE NUMBER;
  P_ERR_MSG VARCHAR2(200);
  
BEGIN

  my_package.my_procedure(
    'VALUE1',
    'VALUE2',
    'VALUE3',
    P_MY_REF_CURSOR => P_MY_REF_CURSOR,
    P_ERR_CODE => P_ERR_CODE,
    P_ERR_MSG => P_ERR_MSG
  );
    DBMS_OUTPUT.PUT_LINE(P_ERR_MSG); 
    DBMS_OUTPUT.PUT_LINE(P_ERR_CODE); 
    DBMS_SQL.return_result(P_MY_REF_CURSOR);

END;

希望这有帮助!

More easier option is to use DBMS_SQL.return_result();

Lets say your package / procedure / cursor spec is as below.

    create or replace PACKAGE my_package IS
    
    TYPE my_ref_cursor_type IS REF CURSOR;
    
    PROCEDURE my_procedure (
        p_in_param1     IN     VARCHAR2, 
        p_in_param2     IN     VARCHAR2, 
        p_in_param3     IN     VARCHAR2, 
        p_my_ref_cursor OUT    my_ref_cursor_type,
        p_err_code      OUT    NUMBER,
        p_err_msg       OUT    VARCHAR2   
        );
    
    END my_package;

Try this to invoke the procedure from your sql developer WORKSHEET

SET SERVEROUTPUT ON;

DECLARE

  P_MY_REF_CURSOR my_schema.my_package.my_ref_cursor_type;
  P_ERR_CODE NUMBER;
  P_ERR_MSG VARCHAR2(200);
  
BEGIN

  my_package.my_procedure(
    'VALUE1',
    'VALUE2',
    'VALUE3',
    P_MY_REF_CURSOR => P_MY_REF_CURSOR,
    P_ERR_CODE => P_ERR_CODE,
    P_ERR_MSG => P_ERR_MSG
  );
    DBMS_OUTPUT.PUT_LINE(P_ERR_MSG); 
    DBMS_OUTPUT.PUT_LINE(P_ERR_CODE); 
    DBMS_SQL.return_result(P_MY_REF_CURSOR);

END;

Hope this helps !

望笑 2024-11-10 14:45:47

显示 sys_refcursor 结果集的方法有很多,其中一种非常简单的方法是使用 SQL Developer 获取 sys_refcursor 并打印输出,它们是:

  1. 创建一个测试函数来打印其结果
  2. 执行该函数
  3. 查看输出
  4. 验证结果 放

There are many ways for displaying the sys_refcursor result set and one of them that is so easy is using SQL Developer to fetch sys_refcursor and print output which are:

  1. Create a test function to print its result
  2. Execute the function
  3. View the output
  4. Verify the result set
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