package com.example.springboot.mapper;

import org.apache.ibatis.annotations.*;

import com.example.springboot.entity.alarmmg;

import java.util.List;

@Mapper
public interface AlarmMapper {
  @Select("SELECT * FROM alarmmg")
  List<alarmmg> selectAll();

  @Select("SELECT count(*) FROM alarmmg where endTime is null and content=#{content}")
  short selectnullti(String content);

  @Insert("INSERT INTO `canadames`.`alarmmg`( `content`,`timeon`) VALUES ( #{content},now())")
  void Insertalarm(String content);

  @Insert("UPDATE  `canadames`.`alarmmg` set endTime= now() where endTime is null and content=#{content}")
  void updatealarm(String content);
}