ALTER TABLE "season"
    ADD COLUMN "week_of_first_matchday" int not null default 9 CHECK ( week_of_first_matchday > 0 AND week_of_first_matchday <= 53 ),
    ADD COLUMN "first_weekday_of_matchday" int not null default 2 CHECK ( first_weekday_of_matchday > 0 AND first_weekday_of_matchday <= 7 ),
    ADD COLUMN "last_weekday_of_matchday" int not null default 1 CHECK ( last_weekday_of_matchday > 0 AND last_weekday_of_matchday <= 7 ),
    ADD COLUMN "weekday_of_view_change" int not null default 4 CHECK ( weekday_of_view_change > 0 AND weekday_of_view_change <= 7 );
