Mysql 删除后为计数表行创建触发条件

是否可以先查询并计算行数，然后将其用作条件并发送邮件通知

我的可视代码如下所示：

Create Trigger test After Delete on table
   for each row
   Begin 
     Select count(*) as result from table
        if result = 0 then
          set column1 = 'empty'
          --or send mail if possible much better
        else:
          set column1 = 'full'
          --or send mail if possible much better
   End;

任何建议或意见，请提前感谢