Force lookahead in COPY FROM parsing

From: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
To: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Cc: John Naylor <john(dot)naylor(at)enterprisedb(dot)com>
Subject: Force lookahead in COPY FROM parsing
Date: 2021-03-04 09:13:40
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I posted this earlier at,
and that led to removing FE/BE protocol version 2 support. That's been
committed now, so here's COPY FROM patch again, rebased. To recap:

Previously COPY FROM could not look ahead in the COPY stream, because in
the v2 protocol, it had to detect the end-of-copy marker correctly. With
v2 protocol gone, that's no longer an issue, and we can simplify the
parsing slightly. Simpler should also mean faster, but I haven't tried
that measuring that.

- Heikki

Attachment Content-Type Size
v2-0001-Simplify-COPY-FROM-parsing-by-forcing-lookahead.patch text/x-patch 9.9 KB


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