| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, pgadmin-hackers(at)postgresql(dot)org, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] Hot Standby utility and administrator functions |
| Date: | 2008-10-20 22:45:31 |
| Message-ID: | 5600.1224542731@sss.pgh.pa.us |
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| Lists: | pgadmin-hackers pgsql-general pgsql-hackers |
Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> On Mon, 2008-10-20 at 17:44 -0300, Alvaro Herrera wrote:
>> That's been "extended with an epoch counter" per the docs; I don't think
>> that's appropriate for the new functions, is it?
> I assumed it was, so you can subtract them easily.
> It can be done either way, I guess. Happy to provide what people need. I
> just dreamed up a few that sounded useful.
I don't think you should be inventing new functions without clear
use-cases in mind. Depending on what the use is, I could see either the
xid or the txid definition as being *required*.
In any case, do not use the wrong return type for the definition you're
implementing.
regards, tom lane
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