Horton

Re: leaky views, yet again

Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>

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From: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
To: KaiGai Kohei <kaigai@ak.jp.nec.com>
Cc: Robert Haas <robertmhaas@gmail.com>, pgsql-hackers@postgresql.org
Date: 2010-07-19T17:13:44Z
Lists: pgsql-hackers 
On 09/07/10 06:47, KaiGai Kohei wrote:
> When leaky and non-leaky functions are chained within a WHERE clause,
> it will be ordered by the cost of functions. So, we have possibility
> that leaky functions are executed earlier than non-leaky functions.

No, that needs to be forbidden as part of the fix. Leaky functions must
not be executed before all the quals from the view are evaluated.

-- 
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com