Hi Haibo,
Thanks for your v3. I think it breaks some thing that is right today.
On master with v3:
SELECT 1 AS one, 1 AS uno GROUP BY ROLLUP(one);
gives uno = NULL in the grand-total row. Master, 17 and 18 give 1.
The parser turns the second 1 into the group Var, and with the shared
phid it now gets nulled. Andrey Rachitskiy's patch for bug 19752 stops
that [1].
With his patch, v3 is supposed to be ok. So that created some dependency
on submission.
[1]
https://www.postgresql.org/message-id/CAB8bMiv2JLSxs1aYF42G4887y5LdY=1-e8flj_wgmkfooqw...@mail.gmail.com
Thanks,
Shihao
