Created
April 25, 2024 08:30
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Calcular el espacio gastado por una tabla en postgresql
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>SELECT | |
*, | |
pg_size_pretty(table_bytes) AS table, | |
pg_size_pretty(index_bytes) AS index, | |
pg_size_pretty(toast_bytes) AS toast, | |
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 = 'mi_schema' | |
ORDER BY total_bytes DESC; |
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