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

Melihat ukuran semua skema:

SELECT
	schema_name,
	relname,
	pg_size_pretty(table_size) AS size,
	table_size
FROM (
	SELECT
		pg_catalog.pg_namespace.nspname AS schema_name,
		relname,
		pg_relation_size(pg_catalog.pg_class.oid) AS table_size
	FROM
		pg_catalog.pg_class
		JOIN pg_catalog.pg_namespace ON relnamespace = pg_catalog.pg_namespace.oid) t
WHERE
	schema_name NOT LIKE 'pg_%'
ORDER BY
	table_size DESC;