查询过去一周注销时间>下午6点的所有记录

Question

I have a Database Table named logoninfo . Below is the schema.

       Record ID|User ID | Computer ID |LOGON_TIME|LOGOFF_TIME

The Logon and logoff time are in milliseconds. All the users will logon daily and there will be multiple entries for same user and computer but different Record ID. I need to find all the records that logged off after 6 PM on the past week. To be more specific I need to know all the users who over stayed (logged off after 6 PM considered as Over stayed) and when they over stayed. Help me with the query please. I'm using PostgreSQL 9.5.

Answer 1

You will need to convert the dreaded epoch into a proper timestamp, then you can easily query that:

select *
from the_table
where 
  -- this selects every row where logged off is after 18:00 
  to_timestamp(logoff_time)::time >  time '18:00'
  -- the following two conditions select all rows from last week
  and to_timesamp(logoff_time) >= date_trunc('week', current_timestamp) - interval '1 week'
  and to_timesamp(logoff_time) < date_trunc('week', current_timestamp) - interval '1 week' + interval '1 week';