Created
February 12, 2015 12:41
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Postgresql - inspect DB table/index sizes
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-- Display table and index sizes | |
SELECT | |
table_name, | |
pg_size_pretty(table_size) AS table_size, | |
pg_size_pretty(indexes_size) AS indexes_size, | |
pg_size_pretty(total_size) AS total_size | |
FROM ( | |
SELECT | |
table_name, | |
pg_table_size(table_name) AS table_size, | |
pg_indexes_size(table_name) AS indexes_size, | |
pg_total_relation_size(table_name) AS total_size | |
FROM ( | |
SELECT ('"' || table_schema || '"."' || table_name || '"') AS table_name | |
FROM information_schema.tables | |
) AS all_tables | |
ORDER BY total_size DESC | |
) AS pretty_sizes; | |
-- display individual table/index sizes | |
SELECT relname AS "relation", pg_size_pretty(pg_relation_size(C.oid)) AS "size" | |
FROM pg_class C LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) | |
WHERE nspname NOT IN ('pg_catalog', 'information_schema') | |
ORDER BY pg_relation_size(C.oid) DESC | |
LIMIT 30; |
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