mysql存储过程仅在我有一行的情况下有效

Question

我创建了一个存储过程，以便从不同的表中删除多行。 基本上有一个主行，所有其他行都由外键连接。 当我在有一个主行的情况下调用过程时，一切正常，而仅主行的其他行都消失了。 但是当行多于一列时，存储过程将无法工作。 （没有外键交叉，这意味着在某些地方不能有两个具有相同FK的主行）。 如果删除所有回滚，则会得到“无法删除或更新父行：外键约束失败”的消息，这是奇怪的，因为当我直接以相同顺序执行相同的delete语句（无存储过程）时，即使多个主要行。 任何想法？？ 这是我的存储过程

    -- --------------------------------------------------------------------------------
    -- Routine DDL
    -- Note: comments before and after the routine body will not be stored by the server
    -- --------------------------------------------------------------------------------
    DELIMITER $$

    CREATE DEFINER=`root`@`localhost` PROCEDURE `Tik_Del`(IN dell_id INT(11))
    BEGIN
    DECLARE hatan_id INT(11) DEFAULT -1;
    DECLARE cala_id INT(11) DEFAULT -1;
    DECLARE tashlum_id INT(11) DEFAULT -1;
    DECLARE teauda_id INT(11) DEFAULT -1;
    DECLARE haderacha_id INT(11) DEFAULT -1;
    DECLARE rav_mekadesh_id INT(11) DEFAULT -1;
    DECLARE pirtei_hatuna_id INT(11) DEFAULT -1;
    DECLARE EXIT HANDLER FOR SQLEXCEPTION ROLLBACK;
    DECLARE EXIT HANDLER FOR SQLWARNING ROLLBACK;
    START TRANSACTION;

    SET SQL_SAFE_UPDATES=0;
    SELECT `tikim`.`hatan_id`,
        `tikim`.`cala_id`,
        `tikim`.`taslum_id`,
        `tikim`.`teauda_id`,
        `tikim`.`hadracha_id`,
        `tikim`.`rav_mekadesh_id`,
        `tikim`.`pirtei_hatuna_id`
    INTO hatan_id,cala_id,tashlum_id,teauda_id,haderacha_id,rav_mekadesh_id,pirtei_hatuna_id
    FROM `ad120`.`tikim` WHERE `tik_id`=dell_id;

    DELETE FROM `ad120`.`tikim` WHERE `tik_id`=dell_id;

    DELETE FROM `ad120`.`haderachot` WHERE `haderacha_id`=haderacha_id;

    DELETE FROM `ad120`.`tashlumim` WHERE `tashlum_id`=tashlum_id;

    DELETE FROM `ad120`.`rav_mekadesh` WHERE `rav_mekadesh_id`=rav_mekadesh_id;

    DELETE FROM `ad120`.`pirtei_hatuna` WHERE `pirtei_hatuna_id`=pirtei_hatuna_id;

    Call Aish_Del(hatan_id);
    Call Aish_Del(cala_id);

    Call Teauda_Del(teauda_id);


    COMMIT;
    END

Answer 1

您是否考虑过进行多表删除？

DELETE k, h, t, r, p 
FROM `ad120`.`tikim` AS k
LEFT OUTER JOIN `ad120`.`haderachot` AS h USING (`hadracha_id`)
LEFT OUTER JOIN `ad120`.`tashlumim` AS t USING (`tashlum_id`)
LEFT OUTER JOIN `ad120`.`rav_mekadesh` AS r USING (`rav_mekadesh_id`)
LEFT OUTER JOIN `ad120`.`pirtei_hatuna` AS p USING (`pirtei_hatuna_id`)
WHERE k.`tik_id` = dell_id;

另一种选择是使用ON DELETE CASCADE声明所有外键。 然后，您可以从tikim删除并让其余的级联（我假设tikim是所有其他表引用的父级）。

Answer 2

好的，我不知道为什么，但是当我将其更改为此

    -- --------------------------------------------------------------------------------
    -- Routine DDL
    -- Note: comments before and after the routine body will not be stored by the server
    -- --------------------------------------------------------------------------------
    DELIMITER $$

    CREATE DEFINER=`root`@`localhost` PROCEDURE `Tik_Del`(IN dell_id INT(11))
    BEGIN
    /*DECLARE hatan_id INT(11) DEFAULT -1;
    DECLARE cala_id INT(11) DEFAULT -1;
    DECLARE tashlum_id INT(11) DEFAULT -1;
    DECLARE teauda_id INT(11) DEFAULT -1;
    DECLARE haderacha_id INT(11) DEFAULT -1;
    DECLARE rav_mekadesh_id INT(11) DEFAULT -1;
    DECLARE pirtei_hatuna_id INT(11) DEFAULT -1;*/
    DECLARE EXIT HANDLER FOR SQLEXCEPTION ROLLBACK;
    DECLARE EXIT HANDLER FOR SQLWARNING ROLLBACK;
    set @hatan_id =-1;
    set @cala_id =-1;
    set @tashlum_id =-1;
    set @teauda_id =-1;
    set @haderacha_id=-1;
    set @rav_mekadesh_id =-1;
    set @pirtei_hatuna_id=-1;

    START TRANSACTION;

    SET SQL_SAFE_UPDATES=0;
    SELECT `tikim`.`hatan_id`,
        `tikim`.`cala_id`,
        `tikim`.`taslum_id`,
        `tikim`.`teauda_id`,
        `tikim`.`hadracha_id`,
        `tikim`.`rav_mekadesh_id`,
        `tikim`.`pirtei_hatuna_id`
    INTO         @hatan_id,@cala_id,@tashlum_id,@teauda_id,@haderacha_id,@rav_mekadesh_id,@pirtei_hatuna_id
    FROM `ad120`.`tikim` WHERE `tik_id`=dell_id;

    DELETE FROM `ad120`.`tikim` WHERE `tik_id`=dell_id;

    DELETE FROM `ad120`.`haderachot` WHERE `haderacha_id`=@haderacha_id;

    DELETE FROM `ad120`.`tashlumim` WHERE `tashlum_id`=@tashlum_id;

    DELETE FROM `ad120`.`rav_mekadesh` WHERE `rav_mekadesh_id`=@rav_mekadesh_id;

    DELETE FROM `ad120`.`pirtei_hatuna` WHERE `pirtei_hatuna_id`=@pirtei_hatuna_id;

    Call Aish_Del(@hatan_id);
    Call Aish_Del(@cala_id);

    Call Teauda_Del(@teauda_id);


    COMMIT;
    END