Re: Finding the size of your biggest relations

[Artem Tomyuk <admin@xxxxxxxxxxxxxx>]

Sorry, 

this query

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;

2016-09-23 16:21 GMT+03:00 hubert depesz lubaczewski <depesz@xxxxxxxxxx>:

On Fri, Sep 23, 2016 at 03:57:52PM +0300, Artem Tomyuk wrote:
> i am running this query to get to 20 biggest tables but getting only
> pg_temp** records like this without size:

What query did you run?

For finding largest tables, I use:

select oid::regclass, pg_table_size(oid) from pg_class where relkind
= 'r' order by 2 desc limit 20;

Best regards,

depesz