On Thu, Mar 14, 2019 at 7:50 AM Kyotaro HORIGUCHI <horiguchi.kyot...@lab.ntt.co.jp> wrote: > Thank you for the kind explanation. I'm not sure but I understand > this as '"lists" is an extension' turned into 'lists are an > extension'. That is, the "lists' expresses a concept rather than > the plurarilty. (But I haven't got a gut feeling..)
The idea that it expresses a concept rather than the plurality is exactly right -- so apparently you DO have a gut feeling! -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
