On Mon, 14 Dec 2015 09:55:02 -0800, Benjamin Smith
<li...@benjamindsmith.com> wrote:

>Is there a way to set PG field-level read permissions so that a deny doesn't 
>cause the query to bomb, but the fields for which permission is denied to be 
>nullified? 

How about using encryption?

pgp_sym_decrypt() returns null if any argument is null.  So encrypt
the relevant column(s) and associate the decryption key(s) on a per
user basis.   Users who can't see the data will have a null key for it
and will get null back as a result.

This will get painful if you need to handle a lot of users x columns,
but superficially I think it achieves what you want.

George



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