Código SQL [-] SELECT T1.ID, T1.NOMBRE, T1.ID_SUPERVISOR, (SELECT T2.NOMBRE FROM TU_TABLA T2 WHERE T2.ID = T1.ID_SUPERVISOR) FROM TU_TABLA T1
SELECT T1.ID, T1.NOMBRE, T1.ID_SUPERVISOR, (SELECT T2.NOMBRE FROM TU_TABLA T2 WHERE T2.ID = T1.ID_SUPERVISOR) FROM TU_TABLA T1