PL/SQL 删除特定行的过程

Question

正在尝试创建一个存储过程来删除分销商 (x) 提供的所有商品以及我的 LINE table 中对商品的引用。我的问题是总共有 3 个 table。所以我需要先删除 LINE table 中的引用，然后再删除 GOODS table 中的项目，但我似乎无法正确理解。我觉得我有它只是需要一些语法错误的帮助。

CREATE OR REPLACE PROCEDURE PRC_DeleteProd(x IN INTEGER)
AS
    v_dcode    distributor.d_code%type;
    v_gcode    goods.g_code%type;
    v_gcode2   line.g_code%type;

 CURSOR v_delete_cursor IS
   SELECT goods.g_code, line.g_code , d_code
     FROM distributor
     JOIN goods ON (distributor.d_code = goods.g_code)
     JOIN line ON (goods.g_code = line.g_code);

BEGIN

  OPEN v_delete_cursor;

  LOOP
    FETCH v_delete_cursor INTO v_dcode, v_gcode, v_gcode2;
    EXIT WHEN v_cus_cursor%NOTFOUND;

    IF x = v_dcode THEN
      DELETE FROM line WHERE v_gcode2 = x;

      DELETE FROM goods WHERE v_gcode = x;
    END IF;
  END LOOP;
END;
/

Answer 1

您没有正确使用AND关键字

DELETE FROM line
WHERE v_gcode = x
AND
DELETE FROM goods
WHERE v_gcode = x;

应该是

DELETE FROM line
WHERE v_gcode = x;

DELETE FROM goods
WHERE v_gcode = x;

PL/SQL 删除特定行的过程

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