pgsql: Support multi-line headers in COPY FROM command.

From: Fujii Masao <fujii(at)postgresql(dot)org>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Support multi-line headers in COPY FROM command.
Date: 2025-07-03 06:30:01
Message-ID: E1uXDSK-004TEp-3A@gemulon.postgresql.org
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Support multi-line headers in COPY FROM command.

The COPY FROM command now accepts a non-negative integer for the HEADER option,
allowing multiple header lines to be skipped. This is useful when the input
contains multi-line headers that should be ignored during data import.

Author: Shinya Kato <shinya11(dot)kato(at)gmail(dot)com>
Co-authored-by: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Reviewed-by: Yugo Nagata <nagata(at)sraoss(dot)co(dot)jp>
Discussion: https://postgr.es/m/CAOzEurRPxfzbxqeOPF_AGnAUOYf=Wk0we+1LQomPNUNtyZGBZw@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/bc2f348e87c02de63647dbe290d64ff088880dbe

Modified Files
--------------
doc/src/sgml/ref/copy.sgml | 38 +++++++++++++++++++++++---------
src/backend/commands/copy.c | 42 ++++++++++++++++++++++--------------
src/backend/commands/copyfromparse.c | 17 +++++++++++----
src/backend/commands/copyto.c | 2 +-
src/include/commands/copy.h | 16 ++++++--------
src/test/regress/expected/copy.out | 25 ++++++++++++++++++++-
src/test/regress/expected/copy2.out | 6 ++++++
src/test/regress/sql/copy.sql | 30 ++++++++++++++++++++++++++
src/test/regress/sql/copy2.sql | 3 +++
src/tools/pgindent/typedefs.list | 1 -
10 files changed, 138 insertions(+), 42 deletions(-)

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