Index: openacs-4/contrib/obsolete-packages/acs-workflow/sql/postgresql/wf-core-create.sql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/contrib/obsolete-packages/acs-workflow/sql/postgresql/wf-core-create.sql,v
diff -u -r1.2 -r1.3
--- openacs-4/contrib/obsolete-packages/acs-workflow/sql/postgresql/wf-core-create.sql	13 Apr 2001 00:29:01 -0000	1.2
+++ openacs-4/contrib/obsolete-packages/acs-workflow/sql/postgresql/wf-core-create.sql	13 Apr 2001 04:31:27 -0000	1.3
@@ -125,11 +125,11 @@
    *             place_key in varchar, direction in varchar2, custom_arg in varchar2) 
    * return char(1)
    */
-  guard_callback        varchar(100),
+  guard_callback        varchar(100) default '' not null,
   guard_custom_arg      text default '' not null,
   guard_description     varchar(500) default '' not null,
   constraint wf_arc_guard_on_in_arc_ck
-  check (guard_callback is null or direction = 'out'),
+  check (guard_callback = '' or direction = 'out'),
   constraint wf_arc_transition_fk
   foreign key (workflow_key, transition_key) references wf_transitions(workflow_key, transition_key)
   on delete cascade,
