Using SELECT for simple BOOLEAN evaluation
SELECT
CASE
WHEN 2 > 1 THEN 1
ELSE 0
END
Edit:
SQL Server 2012 (Denali):
SELECT IIF(2 > 1, 'TRUE', 'FALSE')
SELECT CASE WHEN 2 > 1 THEN 'True' ELSE 'False' END
SELECT CASE WHEN 2 > 1 THEN cast(0 as bit) ELSE cast(1 as bit) END