Skip to content

Instantly share code, notes, and snippets.

@jeechu
Last active September 3, 2020 06:25
Show Gist options
  • Save jeechu/05ebb02aef364a350048e0637fa24a82 to your computer and use it in GitHub Desktop.
Save jeechu/05ebb02aef364a350048e0637fa24a82 to your computer and use it in GitHub Desktop.
storage used by pg table
SELECT *,
pg_size_pretty(total_bytes) AS total,
pg_size_pretty(index_bytes) AS index,
pg_size_pretty(toast_bytes) AS toast,
pg_size_pretty(table_bytes) AS table
FROM (
SELECT *,
total_bytes - index_bytes - coalesce(toast_bytes, 0) AS table_bytes
FROM (
SELECT c.oid,
nspname AS table_schema,
relname AS table_name,
c.reltuples AS row_estimate,
pg_total_relation_size(c.oid) AS total_bytes,
pg_indexes_size(c.oid) AS index_bytes,
pg_total_relation_size(reltoastrelid) AS toast_bytes
FROM pg_class c
LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
WHERE relkind = 'r'
AND relname = '<table-name>'
) a
) a;
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment