psql: mark NULL values

diff --git a/psql/psqlrc.in b/psql/psqlrc.in
index 8733b4f284752362cb242d5bde8d41bf2b3b2a36..8901fbfcab96c470bb0ae4ad01cc1f5d5cacc911 100644 (file)
--- a/psql/psqlrc.in
+++ b/psql/psqlrc.in
@@ -25,6 +25,10 @@
 -- Use unicode characters for borders.
 \pset linestyle unicode
 
+-- Per default NULL values are not displayed, use a replacement string to
+-- prevent mistaken them for an empty string.
+\pset null ｢NULL｣
+
 -- Uppercase keywords when completing. Thanks to [1] (read on 2016-08-06).
 -- [1]: http://phili.pe/posts/postgresql-on-the-command-line/
 \set COMP_KEYWORD_CASE upper