Re: InitPostgres and flatfiles question

Ron Mayer wrote:
> Tom Lane wrote:
> > Bruce Momjian <bruce@momjian.us> writes:
> >> What value is allowing multiple queies via PQexec()
> > 
> > The only argument I can think of is that it allows applications to be
> > sloppy about parsing a SQL script into individual commands before they
> > send it.  (I think initdb may be guilty of exactly that BTW...)  At the
> > same time you could argue that such sloppiness is inherently a Bad Idea.
> 
> Doesn't it also avoid some network(?) overhead when you have
> a large number of small inserts or updates?
> 
> I seem to recall a previous company where we had a major performance
> by concatenating a bunch of updates with ";"s in between and sending
> them to postgresql as a single command.

Added to TODO list:

>       o Consider parsing the -c string into individual queries so each
>         is run in its own transaction
>
>       o Consider disallowing multiple queries in PQexec() as an
>         additional barrier to SQL injection attacks

--  Bruce Momjian   bruce@momjian.us EnterpriseDB    http://www.enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +