CREATE TABLE table_27495117_3 (date_of_appointment VARCHAR2, outgoing_manager VARCHAR2)

what was the appointment date for outgoing manager luis c sar sampedro
SELECT date_of_appointment FROM table_27495117_3 WHERE outgoing_manager = "Luis César Sampedro"
SELECT "date_of_appointment" FROM "table_27495117_3" WHERE "Luis César Sampedro" = "outgoing_manager"