varchar::bytea fails when varchar contains backslash

Hello,

I wanted to look into a column of type varchar converting the content
with ::bytea to a hex string, but this fails when the column contains a
backslash:

psql -Usisis -dtestdb
psql (14.1)
Geben Sie »help« für Hilfe ein.

testdb=# select trenn from sik_fstab where name='EdvSelKenn';
trenn
-------------------------------
; :,(dot)-!(at)%&/()=?'*+#<>[\]{|}&"
; :,(dot)-!(at)%&/()=?'*+#<>[\]{|}&"
(2 Zeilen)

testdb=# select trenn::bytea from sik_fstab where name='EdvSelKenn';
ERROR: invalid input syntax for type bytea

Why is this?

matthias
--
Matthias Apitz, ✉ guru(at)unixarea(dot)de, http://www.unixarea.de/ +49-176-38902045
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