Doc: fix documentation example for bytea hex output format.

Per report from rsindlin

Discussion: https://postgr.es/m/167907221210.1803488.5939223864945604536@wrigleys.postgresql.org

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 0258b192e0e4f18d3730efc45f841e78124d82a1..a903dcc3216144ab3ef32e6ab9bda75f6d33f1e6 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1480,7 +1480,12 @@ SELECT b, char_length(b) FROM test2;
    <para>
     Example:
 <programlisting>
-SELECT '\xDEADBEEF';
+SET bytea_output = 'hex';
+
+SELECT '\xDEADBEEF'::bytea;
+   bytea
+------------
+ \xdeadbeef
 </programlisting>
    </para>
   </sect2>