On Tue, Sep 20, 2011 at 1:26 PM, Jon Nelson <jnelson+pgsql@xxxxxxxxxxx> wrote: > I have a table with a fair bit of TOAST data in it. > I noticed that \d+ does /not/ include that information (but > pg_total_relation_size does). I assume by "\d+" you meant "\dt+" (\d+ doesn't show sizes at all). On version 9.0 and up, \dt+ uses pg_relation_size() internally, which actually does include TOAST data as this comment in dbsize.c explains: * Calculate total on-disk size of a given table, * including FSM and VM, plus TOAST table if any. * Indexes other than the TOAST table's index are not included. The extra space displayed by pg_total_relation_size() is from indexes on the table. > Is that intentional? It seems a bit misleading, insofar as "\d+" feels > like it is meant to be a rough indication of the table size, but if > 90% of the data is in TOAST then the *real* data stored is much more > than displayed. FYI, the implementation was agreed upon here: http://archives.postgresql.org/pgsql-hackers/2011-03/msg01268.php There were some ideas tossed around in that thread about ways to also include index size as well, which I do think would be nice to have. It would be a challenge to format that information nicely, particularly without messing up the tabular output of different types of relations (e.g. "\dts+"). Josh -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
