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Re: 9.1 support for hashing arrays

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Dean Rasheed <dean.a.rasheed@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2011-05-23T03:16:50Z
Lists: pgsql-hackers

Commits

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  1. More cleanup of FOREIGN TABLE permissions handling.

On Fri, May 20, 2011 at 1:43 AM, Dean Rasheed <dean.a.rasheed@gmail.com> wrote:
> Doh! I forgot one important piece of this algorithm - it is necessary
> to initialise the result to something non-zero at the start so that
> adding leading nulls to an array changes the final result.

Looks reasonable.

I believe, however, that applying this will invalidate the contents of
any hash indexes on array types that anyone has built using 9.1beta1.
Do we need to do something about that?

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company