| From: | "Jose' Soares Da Silva" <sferac(at)bo(dot)nettuno(dot)it> |
|---|---|
| To: | Byron Nikolaidis <byronn(at)insightdist(dot)com> |
| Cc: | "pgsql-hackers(at)postgreSQL(dot)org" <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: [HACKERS] Timestamp field |
| Date: | 1998-06-11 10:56:07 |
| Message-ID: | Pine.LNX.3.96.980611105440.3123A-100000@proxy |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, 10 Jun 1998, Byron Nikolaidis wrote:
> Am I right in my thinking that Postgres does not have a pseudo timestamp
> field that is updated whenever a row is added or updated? Did it used
> to have one before time travel was removed?
>
> If no timestamp field, are there any other pseudo fields that are
> updated every time? I noticed that the 'ctid' field seems to qualify,
> but what does something like (1,54) mean?
>
> Thanks for any help.
>
> Byron
Seems that XMIN field is updated whenever a row is inserted or updated.
see man sql.
Jose'
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