Re: WAL logging volume and CREATE TABLE

Patch applied.

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Bruce Momjian wrote:
> Alvaro Herrera wrote:
> > Excerpts from Bruce Momjian's message of mar ago 02 22:46:55 -0400 2011:
> > 
> > > I have created a documentation patch to clarify this, and to mention
> > > CREATE TABLE AS which also has this optimization.
> > 
> > It doesn't seem particularly better to me.  How about something like
> > 
> > In minimal level, WAL-logging of some operations can be safely skipped,
> > which can make those operations much faster (see <blah>).  Operations on
> > which this optimization can be applied include: 
> > <simplelist>
> >  <item>CREATE INDEX</item>
> >  <item>CLUSTER</item>
> >  <item>CREATE TABLE AS</item>
> >  <item>COPY, when tables that were created or truncated in the same
> >  transaction
> > </simplelist>
> > 
> > Minimal WAL does not contain enough information to reconstruct the data
> > from a base backup and the WAL logs, so either <literal>archive</> or
> > <literal>hot_standby</> level must be used to enable ...
> 
> Good idea --- updated patch attached.
> 
> -- 
>   Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>   EnterpriseDB                             http://enterprisedb.com
> 
>   + It's impossible for everything to be true. +


> 
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--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +