| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Andy Fan <zhihui(dot)fan1213(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, "Hou, Zhijie" <houzj(dot)fnst(at)cn(dot)fujitsu(dot)com>, Floris Van Nee <florisvannee(at)optiver(dot)com> |
| Subject: | Re: Keep notnullattrs in RelOptInfo (Was part of UniqueKey patch series) |
| Date: | 2021-07-06 13:14:50 |
| Message-ID: | 1664320.1625577290@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> Tom, I'm wondering if you might get a chance to draw up a design for
> what you've got in mind with this? I assume adding a new field in
> Var, but I'm drawing a few blanks on how things might work for equal()
> when one Var has the field set and another does not.
As I said before, it hasn't progressed much past the handwaving stage,
but it does seem like it's time to get it done. I doubt I'll have any
cycles for it during the commitfest, but maybe I can devote a block of
time during August.
regards, tom lane
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