--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/setup/postgres/psql_patch_1.5.0.sql	Tue Jan 14 20:12:25 2025 +0100
@@ -0,0 +1,4 @@
+-- apply this script to patch a version < 1.5.0 database to version 1.5.0
+
+alter table lpit_issue_history_event
+    add userid integer null references lpit_user (userid) on delete set null;