--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/backend/doc/schema/postgresql-alter-wsts.sql	Tue Apr 03 08:30:02 2018 +0200
@@ -0,0 +1,9 @@
+BEGIN;
+
+
+--Add a column to specify S-INFO selection
+ALTER TABLE wsts ADD COLUMN sinfo_selection VARCHAR(1) CHECK((sinfo_selection IS NULL) OR (sinfo_selection IN ('W','Q')));
+COMMENT ON COLUMN wsts.sinfo_selection IS 'Whether and how the WST series is selected within S-INFO calculation types ("W"=without-Q-group, "Q"=with-Q-group, NULL=not-selectable)' ;
+
+
+COMMIT;