postgresql list and order tables by size

Question

How can I list all the tables of a PostgreSQL database and order them by size?

Answer 1

I like following statement:

SELECT 
  table_name, 
  pg_size_pretty( pg_total_relation_size(quote_ident(table_name))), 
  pg_total_relation_size(quote_ident(table_name))
FROM 
  information_schema.tables
WHERE 
  table_schema = 'public'
ORDER BY 
  pg_total_relation_size(quote_ident(table_name)) DESC

You can see total size in a pretty format, but it id ordered correctly too.