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doc: Add example file for COPY

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The paragraph for introducing INSERT and COPY discussed how a file
could be used for bulk loading with COPY, without actually showing
what the file would look like.  This adds a programlisting for the
file contents.

Backpatch to all supported branches since this example has lacked
the file contents since PostgreSQL 7.2.

Author: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/158017814191.19852.15019251381150731439@wrigleys.postgresql.org
Backpatch-through: 13
This commit is contained in:
Daniel Gustafsson
2025-07-17 00:21:18 +02:00
parent 5a261c135d
commit 6242497bb4
1 changed files with 12 additions and 2 deletions
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14
doc/src/sgml/query.sgml
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@@ -264,8 +264,18 @@ COPY weather FROM '/home/user/weather.txt';
where the file name for the source file must be available on the where the file name for the source file must be available on the
machine running the backend process, not the client, since the backend process machine running the backend process, not the client, since the backend process
reads the file directly. You can read more about the reads the file directly. The data inserted above into the weather table
<command>COPY</command> command in <xref linkend="sql-copy"/>. could also be inserted from a file containing (values are separated by a
tab character):
<programlisting>
San Francisco 46 50 0.25 1994-11-27
San Francisco 43 57 0.0 1994-11-29
Hayward 37 54 \N 1994-11-29
</programlisting>
You can read more about the <command>COPY</command> command in
<xref linkend="sql-copy"/>.
</para> </para>
</sect1> </sect1>