On Fri, Aug 3, 2018 at 9:43 AM, Kyotaro HORIGUCHI <horiguchi.kyot...@lab.ntt.co.jp> wrote: > > Something-like-but-other-hanVar node? I'm not sure it is needed, > because whatever node we add to the relation-tlist, we must add > the correspondence to the relation descriptor. And if we do that, > a Var works to point it. (Am I correctly understanding?) >
The purpose of non-Var node is to avoid adding the attribute to relation descriptor. Idea is to create a new node, which will act as a place holder for table oid or row id (whatever) to be fetched from the foreign server. I don't understand why do you think we need it to be added to the relation descriptor. -- Best Wishes, Ashutosh Bapat EnterpriseDB Corporation The Postgres Database Company
