Proposal: Store "timestamptz" of database creation on "pg_database"

Hi all,

This proposal is about add a column "datcreated" on "pg_database" to store
the "timestamp" of the database creation.

A couple weeks ago I had a trouble with a PostgreSQL instance, actually our
ERP had some strange behaviors with some data loss, but I searched for
ERRORs in log files (OS and PG) and I found nothing.

Looking at the files and directories in the cluster noticed something
strange, the date / time of the file "base/9999/PG_VERSION" (database of
our ERP) was different compared to when we create it. So I used the
following SQL to check the date / time of creation of the databases in the
cluster:

fabrizio=# SELECT datname,
(pg_stat_file('base/'||oid||'/PG_VERSION')).modification AS datcreated
fabrizio-# FROM pg_database;
datname | datcreated
-----------+------------------------
template1 | 2012-12-26 12:11:53-02
template0 | 2012-12-26 12:11:54-02
postgres | 2012-12-26 12:11:54-02
fabrizio | 2012-12-26 12:12:02-02
(4 rows)

This isn't an elegant solution to do that, but worked fine. However, why
not we have a column to store this information?

Somebody have another idea?

Regards,

--
Fabrízio de Royes Mello
Consultoria/Coaching PostgreSQL
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