Postgre recipes

README.md

Show table size in bytes with a percentage of all tables size

with t as (select * from pg_catalog.pg_tables
where schemaname = 'public'), 
sizes as (
select t.tablename, pg_total_relation_size(t.tablename::regclass) _size from t
order by 2 desc),
total as (select sum(_size) _size from sizes)
select sizes.tablename, sizes._size, to_char(sizes._size / total._size * 100.0,'999D99%') from sizes, total;