Question

我遇到这种情况：两个数据库中的两个表： 1st：`persone` .T_Persone`包含有关worker的详细信息以及默认为空的两个字段：`user_id`和`username`; 2nd：`joomla` .fe48y_users`，包含CMS Joomla中用户的信息，包括`id`和`username`。我创建了一个在joomla中插入新用户的过程，并返回创建的新用户的user_id和用户名。我还创建了2个触发器（在更新和插入时），它们调用该过程并在`T_Persone`表上设置user_id和username。我还创建了一个删除`joomla` .fe48y_users`的触发器，它更新`persone` .T_Persone`并将null设置为`user_id`和`username`字段。

这是程序：

CREATE DEFINER=`root`@`localhost` PROCEDURE `persone_users_upd`(IN `in_id` INT(10) UNSIGNED, IN `new_email` VARCHAR(255), IN `old_email` VARCHAR(255), OUT `out_user_id` INT(10) UNSIGNED, OUT `out_username` VARCHAR(255))
BEGIN
    DECLARE has_email Boolean;
    DECLARE my_user_id INT;
    DECLARE my_username VARCHAR(255);
    DECLARE my_name VARCHAR(255);

    SELECT (CASE new_email WHEN '' THEN FALSE ELSE TRUE END) INTO @has_email;

    IF @has_email THEN
        SELECT CONCAT(`Nome`,' ',`Cognome`), COALESCE(`CF`,LOWER(SUBSTR(new_email, 1, INSTR(new_email, '@') - 1))) INTO @my_name, @my_username FROM `T_Persone` WHERE `IDPersona` = in_id;
        IF new_email = old_email THEN
            INSERT INTO `spmsf`.`fe48y_users` (`name`, `username`, `email`, `password`, `block`, `sendEmail`, `registerDate`, `lastvisitDate`, `activation`, `params`, `lastResetTime`, `resetCount`, `otpKey`, `otep`, `requireReset`) VALUES
(@my_name, @my_username, new_email, '<omissis>', 0, 1, NOW(), '0000-00-00 00:00:00', '', '{"admin_style":"","admin_language":"","language":"","editor":"","helpsite":"","timezone":"Europe/Rome"}', '0000-00-00 00:00:00', 0, '', '', 0) ON DUPLICATE KEY UPDATE `name` = VALUES(`name`), `email` = VALUES(`email`);
        ELSE
            UPDATE `spmsf`.`fe48y_users` SET `email` = @my_email WHERE `email` = new_email;
        END IF;
        SELECT `id`, `username` INTO @my_user_id,  @my_username FROM `spmsf`.`fe48y_users` WHERE `email` = new_email;

        INSERT IGNORE INTO `spmsf`.`fe48y_user_usergroup_map` (`user_id`,`group_id`) VALUES (@my_user_id, 10);

        SET out_user_id=@my_user_id, out_username=@my_username;
    END IF;
END

这些是`T_Persone`的触发器：

CREATE TRIGGER `persone_del` AFTER DELETE ON `T_Persone`
 FOR EACH ROW BEGIN
IF OLD.`user_id` IS NOT NULL THEN
DELETE FROM `spmsf`.`fe48y_users` WHERE `id` = OLD.`user_id`;
DELETE FROM `spmsf`.`fe48y_user_usergroup_map` WHERE `user_id` = OLD.`user_id`;
END IF;
END

CREATE TRIGGER `persone_ins` BEFORE INSERT ON `T_Persone`
 FOR EACH ROW BEGIN
    CALL persone_users_upd(NEW.`IDPersona`,COALESCE(NEW.`Email`,NEW.`Email_alt`),COALESCE(NEW.`Email`,NEW.`Email_alt`), @user_id, @username);
    SET NEW.`user_id` = @user_id, NEW.`username` = @username;
END

CREATE TRIGGER `persone_upd` BEFORE UPDATE ON `T_Persone`
 FOR EACH ROW BEGIN
    CALL persone_users_upd(NEW.`IDPersona`,COALESCE(NEW.`Email`,NEW.`Email_alt`),COALESCE(OLD.`Email`,OLD.`Email_alt`), @user_id, @username);
    SET NEW.`user_id` = @user_id, NEW.`username` = @username;
END

这是`fe48y_users` delete的触发器：

CREATE TRIGGER `users_del` BEFORE DELETE ON `fe48y_users`
 FOR EACH ROW BEGIN
    DECLARE my_user_id Int;

    SELECT COUNT(*) INTO @my_user_id FROM `personale`.`T_Persone` WHERE `user_id` = OLD.`id`;
    IF @my_user_id > 0 THEN
        UPDATE `personale`.`T_Persone` SET `user_id` = NULL, `username` = NULL WHERE `user_id` = OLD.`id`;
    END IF;
END

所以，我有两个问题：

1st：当我尝试删除`fe48y_users`中的用户时出现错误

#1442 - Can't update table 'fe48y_users' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.

第二：当我插入一个新人时，它不会出现在'fe48y_users'中，但是当我更新它时，它不会出现。

＃1442 - 无法在存储的函数/触发器中更新表...因为它已被调用此存储函数/触发器

0 个答案: