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Data Bases > Pgsql Hackers > Auto-updated fi...
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Auto-updated fields

by david@[EMAIL PROTECTED] (David Fetter) May 7, 2008 at 03:04 PM

Folks,

A co-worker pointed out to me that MySQL has a feature that, properly
implemented and maybe extended, could be handy, namely what MySQL
calls a "timestamp" field, so here's a proposal:

1.  Create a generic (possibly overloaded) trigger function, bundled
with PostgreSQL, which sets a field to some value.  For example, a
timestamptz version might set the field to now().

2.  Have some kind of pre-processing of CREATE and ALTER statements on
tables which would attach the above function to the field at hand,
something like:

CREATE TABLE foo(
    last_updated TIMESTAMPTZ_UPDATED(),
    ...
);

which would turn last_updated into a TIMESTAMPTZ with the expected
behavior on UPDATEs.

What do folks think of this idea?

Cheers,
David.
-- 
David Fetter <david@[EMAIL PROTECTED]
> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david.fetter@[EMAIL PROTECTED]
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 9 Posts in Topic:
Auto-updated fields
david@[EMAIL PROTECTED]   2008-05-07 15:04:49 
Re: Auto-updated fields
tgl@[EMAIL PROTECTED] (T  2008-05-08 00:41:38 
Re: Auto-updated fields
kleptog@[EMAIL PROTECTED]  2008-05-08 08:44:46 
Re: Auto-updated fields
zb@[EMAIL PROTECTED] (Zo  2008-05-08 11:56:28 
Re: Auto-updated fields
zb@[EMAIL PROTECTED] (Zo  2008-05-08 12:03:55 
Re: Auto-updated fields
david@[EMAIL PROTECTED]   2008-05-09 06:33:04 
Re: Auto-updated fields
xzilla@[EMAIL PROTECTED]   2008-05-08 11:20:08 
Re: Auto-updated fields
josh@[EMAIL PROTECTED] (  2008-05-08 10:33:26 
Re: Auto-updated fields
hannu@[EMAIL PROTECTED]   2008-05-08 23:40:17 

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tan13V112 Thu Jul 24 13:44:41 CDT 2008.