| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>, Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql-server: Rearrange pg_subtrans handling |
| Date: | 2004-08-25 21:10:30 |
| Message-ID: | 200408252110.i7PLAUn15595@candle.pha.pa.us |
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| Lists: | pgsql-committers pgsql-hackers |
Christopher Kings-Lynne wrote:
> > OK, TODO updated:
> >
> > * Implement dirty reads or shared row locks and use them in RI triggers
>
> Can someone explain to me what a dirty read is and how it relates to RI
> triggers?
Dirty read allows you to see uncommited rows. I think RI triggers need
it so they can know if someone has a current transaction that is going
to conflict with the RI trigger action, or something like that. Right
now I think we hang waiting for the transaction to complete.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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