What is the total number of postseason games that team Boston Red Stockings participated in?
create table postseason (team_id_winner varchar, team_id_loser varchar, PRIMARY KEY (team_id_winner)); create table team (team_id_br varchar, name varchar, PRIMARY KEY (team_id_br))
select count(*) from (select * from postseason as t1 join team as t2 on t1.team_id_winner = t2.team_id_br where t2.name = 'boston red stockings' union select * from postseason as t1 join team as t2 on t1.team_id_loser = t2.team_id_br where t2.name = 'boston red stockings')