OLD VERSION

CREATE OR REPLACE VIEW TST_TRANFCT_A2_CM (MEMBER_RANK, MAGNET_NAME, MAGNET_TYPE, MAGNET_STATE, APERTURE_NUMBER, MEASURE_DATE, SET_CURRENT, RAMP_DIRECTION, FIELD_LENGTH, TEMPERATURE, REFERENCE_RADIUS, TRANSFER_FUNCTION, LOGIN_NAME, LOGIN_DATE, NOTES) AS
select V."MEMBER_RANK",V."MAGNET_NAME",V."MAGNET_TYPE",V."MAGNET_STATE",V."APERTURE_NUMBER",V."MEASURE_DATE",V."SET_CURRENT",V."RAMP_DIRECTION",V."FIELD_LENGTH",V."TEMPERATURE",V."REFERENCE_RADIUS",V."TRANSFER_FUNCTION",V."LOGIN_NAME",V."LOGIN_DATE",V."NOTES" from (
SELECT rank() over(partition by MAGNET_NAME order by measure_date desc) as member_rank, T.*
FROM MV_F_T_FUNCTION T
WHERE T.APERTURE_NUMBER = 2
--AND T.MAGNET_TYPE = 1
AND T.MAGNET_STATE = 'cold mass'
AND T.RAMP_DIRECTION = 0
AND T.TEMPERATURE > 273
--ORDER BY T.MAGNET_NAME, T.APERTURE_NUMBER, round(T.SET_CURRENT), member_rank
) V where member_rank = 1;

NEW VERSION

CREATE OR REPLACE VIEW TST_TRANFCT_A2_CM (MAGNET_NAME, MAGNET_TYPE, MAGNET_STATE, APERTURE_NUMBER, MEASURE_DATE, SET_CURRENT, RAMP_DIRECTION, FIELD_LENGTH, TEMPERATURE, REFERENCE_RADIUS, TRANSFER_FUNCTION, LOGIN_NAME, LOGIN_DATE, NOTES) AS
select S."MAGNET_NAME",S."MAGNET_TYPE",S."MAGNET_STATE",S."APERTURE_NUMBER",S."MEASURE_DATE",S."SET_CURRENT",S."RAMP_DIRECTION",S."FIELD_LENGTH",S."TEMPERATURE",S."REFERENCE_RADIUS",S."TRANSFER_FUNCTION",S."LOGIN_NAME",S."LOGIN_DATE",S."NOTES" from (
	SELECT rank() over(partition by MAGNET_NAME order by measure_date desc) as member_rank, V.* from
	(
		select * 
                        -- from MV_F_T_FUNCTION T
                        from v_f_t_function@mms_db T
			WHERE T.APERTURE_NUMBER = 2
				AND T.MAGNET_STATE = 'cold mass'
				AND T.RAMP_DIRECTION = 0
				AND T.TEMPERATURE > 273
	) V
) S where member_rank = 1;