INSERT UPDATE DELETE触发器不起作用

Question

create trigger rekamOperasi
on pembelian
AFTER UPDATE, INSERT, DELETE
AS 

DECLARE @event_type varchar(42)

IF EXISTS(SELECT * FROM inserted)
  IF EXISTS(SELECT * FROM deleted)
    SELECT @event_type = 'update'
ELSE
    SELECT @event_type = 'insert'
ELSE
  IF EXISTS(SELECT * FROM deleted)
    SELECT @event_type = 'delete'
  ELSE
    SELECT @event_type = 'unknown'

您的SQL语法有误；检查与您的MariaDB服务器版本相对应的手册以获取在'pembelian'附近使用的正确语法 更新，插入，删除后 AS

DECLARE @event_type varchar（第2行的4'