| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Christoph Berg <myon(at)debian(dot)org>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] Surjective functional indexes |
| Date: | 2018-03-01 19:48:24 |
| Message-ID: | 20180301194824.46ivyszju2ivhlh5@alap3.anarazel.de |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi,
I still don't think, as commented upon by Tom and me upthread, that we
want this feature in the current form.
Your arguments about layering violations seem to be counteracted by the
fact that ProjectionIsNotChanged() basically appears to do purely
executor work inside inside heapam.c.
Greetings,
Andres Freund
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