framework/resources/Functional/case_expr/castToBoln_57.q

SELECT CAST(columns[0] AS integer) c1, CAST(columns[1] AS BOOLEAN) c2, CAST(columns[2] AS char(2)) c3, CAST(columns[3] AS varchar(64)) c4 FROM `bools.csv` WHERE CAST(columns[1] AS BOOLEAN) = true;