MERGE [Stage].[DestTable] AS target
		USING (
			SELECT * FROM Buffer_Table -- при необходимости убрать дубли через ROW_NUMBER
		) AS source 
		ON (
			 target.[No_] = source.[No_]
		)
		WHEN MATCHED 
			AND (
				(target.[Sex] <> source.[Sex]) OR (target.[Sex] IS NULL AND source.[Sex] IS NOT NULL) OR (target.[Sex] IS NOT NULL AND source.[Sex] IS NULL)
				OR (target.[Birth Date] <> source.[Birth Date]) OR (target.[Birth Date] IS NULL AND source.[Birth Date] IS NOT NULL) OR (target.[Birth Date] IS NOT NULL AND source.[Birth Date] IS NULL)
			)
		THEN UPDATE SET 
			 [Sex] = source.[Sex]
			,[Birth Date] = source.[Birth Date]

		WHEN NOT MATCHED THEN 
		INSERT 
		(
			 [No_]
			,[Sex]
			,[Birth Date]
		)
		VALUES
		(
			 [No_]
			,[Sex]
			,[Birth Date]
		)