From the Spanish LaLiga division in the 2017 season, which team won the most times as a local team and by what percentage?
local team refers to HomeTeam; Spanish means belong to the country = 'Spain'; LaLiga is a name of division; won as a local team refers to FTR = 'H', where H stands for home victory; DIVIDE(COUNT(Div where name = 'LaLiga', country = 'Spain', season = 2017, FRT = 'H'), COUNT(Div where name = 'LaLiga', country = 'Spain', season = 2017)) as percentage;
SELECT T1.HomeTeam HWHT , CAST(COUNT(CASE WHEN T1.FTR = 'H' THEN 1 ELSE NULL END) AS REAL) * 100 / COUNT(HomeTeam) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T2.name = 'LaLiga' AND T2.country = 'Spain' AND T1.season = 2017
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)
);
