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.