Oracle操作笔记

1. 查询表记录中时间最新的数据

用括号单独查询最新大的时间 max(create_date)  再做表关联

select t1.workday,t.schedule_id,tss.name,t.*,t1.*
   from t_shifts t
   left join t_schedules tss
   on t.schedule_id = tss.id,
        (select workday, max(create_date) create_date
           from t_shifts
          where employee_id = 59214
            and workday >= to_date('2019-01-01', 'yyyy-MM-dd')
            and workday <= to_date('2019-12-31', 'yyyy-MM-dd')
          group by workday) t1
  where t1.workday = t.workday
    and t1.create_date = t.create_date
    and t.employee_id = 59214
    and t.schedule_id not in (681, 717)
    order by t.workday;