--- 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
+-- Per default NULL values are not displayed, use a replacement string to
+-- prevent mistaken them for an empty string.
+\pset null 「NULL」
+
+-- Don't abort transactions in interactive mode when an error occurs. As the
+-- error is displayed no information is lost and this saves one from having to
+-- restart the transaction on a typo in a statement.
+\set ON_ERROR_ROLLBACK interactive