我是触发器的新手，并且收到“一个表具有相同操作时间和事件的多个触发器”错误。
我创建了一个 AFTER Update 和一个 AFTER Delete ，它们是两个单独的操作时间/事件，所以我不确定为什么会收到错误。
这是我的查询：
CREATE TRIGGER `new_enrolment` AFTER INSERT ON `mdl_user_enrolments` FOR EACH ROW BEGIN
INSERT INTO c_master (
ud,
firstname,
lastname,
email,
username,
cid,
course
)
SELECT
mdl_user.id AS uid,
mdl_user.firstname,
mdl_user.lastname,
mdl_user.email,
mdl_user.suspended,
mdl_user.username,
mdl_enrol.courseid AS cid,
mdl_course.fullname AS course
FROM mdl_user_enrolments INNER JOIN mdl_enrol ON mdl_user_enrolments.enrolid = mdl_enrol.id
INNER JOIN mdl_course ON mdl_enrol.courseid = mdl_course.id
INNER JOIN mdl_user ON mdl_user.id = mdl_user_enrolments.userid
WHERE userid = NEW.userid;
END;
CREATE TRIGGER `remove_enrolment` AFTER DELETE ON `mdl_user_enrolments` FOR EACH ROW BEGIN
SELECT mdl_enrol.courseid,
mdl_user_enrolments.userid,
mdl_user_enrolments.enrolid
FROM mdl_user_enrolments INNER JOIN mdl_enrol ON mdl_user_enrolments.enrolid = mdl_enrol.id
WHERE mdl_user_enrolments.enrolid = OLD.enrolid
DELETE FROM c_master
WHERE uid = OLD.userid AND mdl_enrol.courseid;
END;
由于我对这一切都不熟悉，因此我可能缺少一些简单的东西。