-- Database schema
| divisions : division [ TEXT ] primary_key , name [ TEXT ] , country [ TEXT ] | matchs : Div [ TEXT ] matchs.Div = divisions.division , Date [ DATE ] , HomeTeam [ TEXT ] , AwayTeam [ TEXT ] , FTHG [ INTEGER ] , FTAG [ INTEGER ] , FTR [ TEXT ] , season [ INTEGER ] |
-- -- Which team had more home victories in the 2021 season's matches of the Bundesliga division, Augsburg or Mainz?

SELECT CASE WHEN COUNT(CASE WHEN T1.HomeTeam = 'Augsburg' THEN 1 ELSE NULL END) - COUNT(CASE WHEN T1.HomeTeam = ' Mainz' THEN 1 ELSE NULL END) > 0 THEN 'Augsburg' ELSE 'Mainz' END FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T1.season = 2021 AND T1.FTR = 'H';