package com.gunshi.project.ss.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.gunshi.project.ss.model.JcskGnssREightAm;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;

@Mapper
public interface JcskGnssREightAmMapper extends BaseMapper<JcskGnssREightAm> {

    @Select("""
    select t1.* 
    from jcsk_gnss_r_8am t1 join (
    select cd, max(tm) as tm
    from jcsk_gnss_r_8am
    GROUP BY cd
    ) t2 on t1.cd = t2.cd and t1.tm = t2.tm;
""")
    List<JcskGnssREightAm> queryNewDataTime();

}