How many players were in the team Boston Red Stockings in 2000?
CREATE TABLE salary (team_id VARCHAR, year VARCHAR); CREATE TABLE team (team_id_br VARCHAR, name VARCHAR)
[SQL] SELECT COUNT(*) FROM salary AS T1 JOIN team AS T2 ON T1.team_id = T2.team_id_br WHERE T2.name = 'Boston Red Stockings' AND T1.year = 2000 [/SQL]