nagasudhirpulla/postgres.md

## postgres.md

      
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              postgres.md
            
          
    Querying the disk usage of postgres db tables

https://wiki.postgresql.org/wiki/Disk_Usage
https://stackoverflow.com/questions/18907047/postgres-db-size-command
Finding the total size of your biggest tables

SELECT nspname || '.' || relname AS "relation",
    pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size"
  FROM pg_class C
  LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
  WHERE nspname NOT IN ('pg_catalog', 'information_schema')
    AND C.relkind <> 'i'
    AND nspname !~ '^pg_toast'
  ORDER BY pg_total_relation_size(C.oid) DESC
  LIMIT 20;

-- Database Size
SELECT pg_size_pretty(pg_database_size('Database Name'));
-- Table Size
SELECT pg_size_pretty(pg_relation_size('table_name'));