CREATE TABLE table_50545 ("Tie no" CLOB, "Home team" CLOB, "Score" CLOB, "Away team" CLOB, "Attendance" CLOB)

Which Away Team has a Tie no of replay and a Home Team of Chesterfield?
SELECT "Away team" FROM table_50545 WHERE "Tie no" = 'replay' AND "Home team" = 'chesterfield'
SELECT "Away team" FROM "table_50545" WHERE "Home team" = 'chesterfield' AND "Tie no" = 'replay'