On Wed, Apr 11, 2012 at 01:43:28AM +0000, Tom Lane wrote:
> Make pg_tablespace_location(0) return the database's default tablespace.
> 
> This definition is convenient when applying the function to the
> reltablespace column of pg_class, since that's what zero means there;
> and it doesn't interfere with any other plausible use of the function.
> Per gripe from Bruce Momjian.

It would be nice to remove the special-case handling of 0 in pg_upgrade,
but because it has to deal with pre-9.2 cluster, it has to remain anyway.

-- 
  Bruce Momjian  <bruce(at)momjian(dot)us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

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• pgsql: Make pg_tablespace_location(0) return the database's defaulttab at 2012-04-11 01:43:28 from Tom Lane

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