On Tue, Feb 9, 2016 at 1:22 PM, Ashutosh Bapat
> The userid being printed is from UserMapping. The new API
> GetUserMappingById() allows an FDW to get user mapping by its OID. This API
> is intended to be used by FDWs to fetch the user mapping inferred by the
> core for given join between foreign relations. In such user mapping object ,
> userid may be -1 for a public user mapping.
I am a bit surprised by this sentence, UserMapping->userid is an Oid,
and those are unsigned. Could you clarify?
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