On Wed, Oct 18, 2017 at 2:08 PM, Nico Williams <n...@cryptonector.com> wrote:
> On Wed, Oct 18, 2017 at 01:43:30PM -0700, David G. Johnston wrote: > > More useful than this, for me, would be a way to get the top-most user. > > That would be "session_user"? > Introducing the concept of a stack at the SQL level here seems, at > > first glance, to be over-complicating things. > > Because of the current implementation of invocation of SECURITY DEFINER > functions, a stack is trivial to build, since it's a list of nodes > allocated on the C stack in fmgr_security_definer(). > Not saying its difficult (or not) to code in C; but exposing that to SQL seems like a big step. If I was in position to dive deeper I wouldn't foreclose on the stack idea but I'd be inclined to see if something else could be made to work with reasonable effort. David J.
