Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dbupdates/patch20210127.sql
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diff -u
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dbupdates/patch20210127.sql	(revision 0)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dbupdates/patch20210127.sql	(revision 52f427b49b351cdb932686d9b6f09b56f429c049)
@@ -0,0 +1,16 @@
+-- Turn off autocommit, so nothing is committed if there is an error
+SET AUTOCOMMIT = 0;
+SET FOREIGN_KEY_CHECKS=0;
+-- Put all sql statements below here
+
+-- LDEV-4813 Add a missing foreign key and index
+
+ALTER TABLE tl_laasse10_assessment_result ADD CONSTRAINT FK_tl_laasse10_assessment_result_1 FOREIGN KEY (session_id)
+	REFERENCES tl_laasse10_session (session_id) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- Put all sql statements above here
+
+-- If there were no errors, commit and restore autocommit to on
+COMMIT;
+SET AUTOCOMMIT = 1;
+SET FOREIGN_KEY_CHECKS=1;