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;