Table schema:
CREATE TABLE postseason (team_id_winner VARCHAR, team_id_loser VARCHAR); CREATE TABLE team (team_id_br VARCHAR, name VARCHAR)

Question: What is the total number of postseason games that team Boston Red Stockings participated in?
SQL: 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')