Search Postgresql Archives

Re: timestamp fields and order by?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Steve Wampler <swampler@xxxxxxxx> writes:
> It appears as though the timestamp resolution is now low
> enough that it cannot keep up with the speed at which
> items can be inserted.

Your example looks like what's being called is current_timestamp(3),
or else something on the client side is rounding it off to 3 digits.
The bare function will give whatever resolution the operating system
supplies, down to microseconds at best (the limit of the POSIX API for
this).

Even so, though, I think it would be quite foolish to design an
application around the assumption that the timestamps of successive
insertions will be distinguishable.  Put in a serial column.

			regards, tom lane

-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux