用于为每个唯一 ID 选择最大日期和前 30 天之间的数据点的 Hive 查询

Question

Data Contains unique IDs with different latitudes and longitudes on multiple timestamps.I would like to select the rows of latest 30 days of coordinates for each unique ID.Please help me on how to run the query . This date is in Hive table.unable write the sub query

Answer 1

You can use window functions:

select t.*
from (select t.*,
             max(date) over (partition by id) as max_date
      from t
     ) t
where date > date_add(max_date, -30);