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commit    087c1a2f119b3e27ef989d414750709f7bef3cb8
Author:   Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date:     Tue Aug 17 07:00:06 2021 +0000
First released in: 15.0, 9.6.24, 10.19, 11.14, 12.9, 13.5, 14.0

    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


 doc/src/sgml/ref/copy.sgml | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index 4807dbc3716..90806a241ea 100644
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -599,12 +599,12 @@ COPY <replaceable class="parameter">count</replaceable>
       <row>
        <entry><literal>\</><replaceable>digits</></entry>
        <entry>Backslash followed by one to three octal digits specifies
-       the character with that numeric code</entry>
+       the byte with that numeric code</entry>
       </row>
       <row>
        <entry><literal>\x</><replaceable>digits</></entry>
        <entry>Backslash <literal>x</> followed by one or two hex digits specifies
-       the character with that numeric code</entry>
+       the byte with that numeric code</entry>
       </row>
      </tbody>
     </tgroup>
@@ -636,6 +636,12 @@ COPY <replaceable class="parameter">count</replaceable>
     or vice versa).
    </para>
 
+   <para>
+     All backslash sequences are interpreted after encoding conversion.
+     The bytes specified with the octal and hex-digit backslash sequences must
+     form valid characters in the database encoding.
+   </para>
+
    <para>
     <command>COPY TO</command> will terminate each row with a Unix-style
     newline (<quote><literal>\n</></>).  Servers running on Microsoft Windows instead


[parent: 942416f4bdb0]