ashkangoleh

-- first query all the users 
WITH offsets AS (SELECT a.*,
                        EXTRACT(hour FROM ptn.utc_offset) AS utc_offset
                 FROM bootcamp.attendees a
                          JOIN pg_timezone_names ptn ON a.timezone = ptn.name
                 WHERE a.bootcamp_version = 3
                   AND a.timezone IS NOT NULL
                   AND a.content_delivery = 'Live'::text
                  ),
-- then aggregate the users by track and offset, we want matching timezones to fill up first

ashkangoleh

For get all of tables size depends on schema there is complex query that show tables splited size (tables , indexes)

 SELECT 
   schema_name, 
   relname, 
   pg_size_pretty(table_size) AS size, 
   table_size 
  
 FROM ( 
        SELECT