Re: pg_stat_all_tables data isnt accurate

Hi,

We are trying to use the info in pg_Stat_all_tables to debug our applcation(see how much inserts/updates/deletes since the last reset). However we found some scenarios where the data in the view isnt accurate : 

1)When you preform a rollback all the inserts/updates/deletes you did are added to the n_tup_ins/upd/del column :

postgres=# insert into test values(7);

INSERT 0 1

postgres=# rollback;

ROLLBACK

postgres=# select relname, n_live_tup,n_tup_ins,n_tup_del,n_tup_upd from pg_Stat_all_tables where relname='test';

 relname | n_live_tup | n_tup_ins | n_tup_del | n_tup_upd

---------+------------+-----------+-----------+-----------

 test    |          0 |         3 |         0 |         0

(1 row)

2)sometimes the n_tup_ins isnt accurate and it takes some time until it is updated. Does someone has an explanation for it ? During that time analyze isnt running so it seems might be something else.