Index: openacs-4/packages/acs-kernel/sql/postgresql/upgrade/upgrade-5.9.1d19-5.9.1d20.sql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-kernel/sql/postgresql/upgrade/upgrade-5.9.1d19-5.9.1d20.sql,v
diff -u -r1.2 -r1.3
--- openacs-4/packages/acs-kernel/sql/postgresql/upgrade/upgrade-5.9.1d19-5.9.1d20.sql	7 Aug 2017 23:47:56 -0000	1.2
+++ openacs-4/packages/acs-kernel/sql/postgresql/upgrade/upgrade-5.9.1d19-5.9.1d20.sql	5 Oct 2017 11:18:24 -0000	1.3
@@ -7,14 +7,12 @@
 --
 -- procedure util__get_primary_keys/1
 --
-CREATE OR REPLACE FUNCTION util__get_primary_keys(
-   p_table text
-) RETURNS SETOF pg_attribute.attname%TYPE AS $$
+CREATE OR REPLACE FUNCTION util__get_primary_keys(text) RETURNS SETOF pg_attribute.attname%TYPE AS $$
   SELECT a.attname
     FROM pg_index i
     JOIN pg_attribute a ON a.attrelid = i.indrelid
                        AND a.attnum = ANY(i.indkey)
-  WHERE i.indrelid = p_table::regclass
+  WHERE i.indrelid = $1::regclass
     AND i.indisprimary;
 $$ LANGUAGE sql;