Get Postgresql DB size and table sizes

Get DB Size:

SELECT pg_size_pretty(pg_database_size(‘databasename’)) As fulldbsize;

 

Get All Table size from one Database:

SELECT schemaname, tablename,
pg_size_pretty(size) AS size_pretty,
pg_size_pretty(total_size) AS total_size_pretty
FROM (SELECT *,
pg_relation_size(schemaname||’.’||tablename) AS size,
pg_total_relation_size(schemaname||’.’||tablename) AS total_size
FROM pg_tables) AS TABLES
WHERE schemaname=’public’
ORDER BY total_size DESC;

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