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Re: Foreign keys and permissions oddity

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On 07/08/10 01:13, Joshua Tolley wrote:
Is there some justification for this behavior that I should know already? It
seemed awfully strange when some folkds here stumbled on it:
[snip]
The key point seems to be that the owner of the referenced table has no
permissions on the table, although the referencing user does.

Presumably the underlying trigger functions are executing as the owner of the table. This would make sense in the (more common) case that you want to reference a table you don't necessarily have full read access for (e.g. member-id vs the whole row including address/phone).

You should be able to track the table's OID from pg_class through to tgrelid on pg_trigger and then tdfoid to the relevant OIDs in pg_proc. The functions are all named as RI_FKey_xxx.

Hmm - not sure if they execute as the table owner or the creator of the constraint. You could justify either, but of course they're frequently the same (as in your case).

--
  Richard Huxton
  Archonet Ltd

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