doc: \123 and \x12 escapes in COPY are in database encoding.

Heikki Linnakangas <heikki.linnakangas@iki.fi>

Commit: b889d6c7196d120c9e9a357dea5cd77d68018600
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: 2021-08-17T08:18:06Z
Releases: 11.14
doc: \123 and \x12 escapes in COPY are in database encoding.

The backslash sequences, including \123 and \x12 escapes, are interpreted
after encoding conversion. The docs failed to mention that.

Backpatch to all supported versions.

Reported-by: Andreas Grob
Discussion: https://www.postgresql.org/message-id/17142-9181542ca1df75ab%40postgresql.org

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doc/src/sgml/ref/copy.sgml modified +8 −2

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