| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, david(dot)g(dot)johnston(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Typmod associated with multi-row VALUES constructs |
| Date: | 2016-12-07 21:17:51 |
| Message-ID: | 20161207211751.4inm4caewmmzwltz@alvherre.pgsql |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> In HEAD, we could change the RTE data structure so that
> transformValuesClause could save the typmod information in the RTE,
> keeping the lookups cheap.
Hmm, I think this would be useful for the XMLTABLE patch too. I talked
a bit about it at
https://www.postgresql.org/message-id/20161122204730.dgipy6gxi25j4e6a@alvherre.pgsql
The patch has evolved quite a bit since then, but the tupdesc continues
to be a problem. Latest patch is at
https://www.postgresql.org/message-id/CAFj8pRBsrhwR636-_3TPbqu%3DFo3_DDer6_yp_afzR7qzhW1T6Q%40mail.gmail.com
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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