Horton

Re: Need Multixact Freezing Docs

Bruce Momjian <bruce@momjian.us>

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From: Bruce Momjian <bruce@momjian.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Josh Berkus <josh@agliodbs.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Date: 2014-09-05T23:39:36Z
Lists: pgsql-hackers

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On Wed, Sep  3, 2014 at 05:17:17PM -0400, Robert Haas wrote:
> > I had a look at this and came upon a problem --- there is no multi-xid
> > SQL data type, and in fact the system catalogs that store mxid values
> > use xid, e.g.:
> >
> >          relminmxid     | xid       | not null
> >
> > With no mxid data type, there is no way to do function overloading to
> > cause age to call the mxid variant.
> >
> > Should we use an explicit mxid_age() function name?  Add an mxid data
> > type?
> 
> Maybe both.  But mxid_age() is probably the simpler way forward just to start.

OK, patch applied using mxid_age() and no new data type.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + Everyone has their own god. +

Commits

  1. Document pg_get_multixact_members().