Re: "plan should not reference subplan's variable" when using row level security

From: Adam Guthrie <asguthrie(at)gmail(dot)com>
To: Stephen Frost <sfrost(at)snowman(dot)net>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: "plan should not reference subplan's variable" when using row level security
Date: 2016-02-24 20:35:04
Message-ID: CAC3DOVwf4s5ftjVSOrpSHVdxR=mMhSqsORmRcaryAqTzrRjRTg@mail.gmail.com
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On 24 February 2016 at 20:27, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
> Yeah, looks like a bug to me. My gut reaction is that we're pulling up
> a subquery in a way that isn't possible and that plan shouldn't be
> getting built/considered.

Thanks - shall I go ahead and submit a bug report?

>
> As a work-around, until we fix it, you could create an sql function to
> check for the existance of the id in 'a' and use that in the policy
> definition.

I've also discovered that using the following policy instead

CREATE POLICY a_select ON b FOR SELECT
USING ( a_id IN (SELECT id FROM a) );

also seems to work around the issue.

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