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@hatarist
Created September 8, 2017 15:48
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PostgreSQL: get table size (data & index & toast)
SELECT
*,
pg_size_pretty(table_bytes) AS table,
pg_size_pretty(index_bytes) AS index,
pg_size_pretty(total_bytes) AS total
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'
) a
) a
WHERE table_schema = 'public'
ORDER BY total_bytes DESC;
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