How many home victories does the Bundesliga division have in more or less than the Premier League division in the 2021 season?
Bundesliga and the Premier League are names of division; home victories refer to FTR = 'H', where H stands for home victory; SUBTRACT(COUNT(FTR = 'H' where season = 2021, name = 'Bundesliga'), COUNT(FTR = 'H' where season = 2021, name = 'Premier League'));
SELECT COUNT(CASE WHEN T2.name = 'Bundesliga' THEN 1 ELSE NULL END) - COUNT(CASE WHEN T2.name = 'Premier League' THEN 1 ELSE NULL END) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T1.season = 2021 AND T1.FTR = 'H'
CREATE TABLE divisions
(
    division TEXT not null
        primary key,
    name     TEXT,
    country  TEXT
);
CREATE TABLE matchs
(
    Div      TEXT,
    Date     DATE,
    HomeTeam TEXT,
    AwayTeam TEXT,
    FTHG     INTEGER,
    FTAG     INTEGER,
    FTR      TEXT,
    season   INTEGER,
    foreign key (Div) references divisions(division)
);
