Re: Restrict number of connections to specific table

On Tue, May 13, 2014 at 10:27:38AM -0400, Tom Lane wrote:
> "Sam Franklin" <Sam.Franklin@senergyworld.com> writes:
> > I have some licenced geospatial data. The licence terms state that only
> > "one user can access the data at one time".
>
> > Can I put a constraint on a specific table to restrict the number of
> > concurrent connections to 1, which will allow me to adhere to the data
> > licencing terms?
>
> Not on a specific table.  You could possibly use a dedicated Postgres
> instance with max_connections set to 1.  If you need to serialize access
> to just this table while allowing concurrent access to some other data
> in the same DB, then there's no built-in answer.

Seems they could set the CONNECTION LIMIT to 1 on CREATE/ALTER DATABASE
also, but as you said, it is per database.

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

  + Everyone has their own god. +