On Sat, Dec 3, 2016 at 10:30 AM, Dilip Kumar <dilipbal...@gmail.com> wrote: >> I'll post my new expression evaluation stuff - which doesn't do this >> atm, but makes ExecQual faster in other ways - later this week. If we >> could get the planner (or parse-analysis?) to set an OpExpr flag that >> signals that the expression can be evaluated as a scankey, that'd be >> easy. > > Isn't it better to directly make two separate lists during planning > itself, one for regular qual and other which can be converted to > scankey. Instead of keeping the flag in OpExpr ?
Well, I certainly think that in the end we need them in two separate lists. But it's possible that a flag in the OpExpr could somehow be useful in constructing those lists cheaply. I'm not sure I see what Andres has in mind, though. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
