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SELECT
    charging_station_location,
    TO_DATE(charging_start_time),
    charging_cost,
    energy_consumed,
	
    -- Provide a ranking for each charging session based on energy consumed, from greatest to least
    ___() OVER(
        PARTITION BY charging_station_location
        ORDER BY ___
    ) AS rank_energy_consumed,
	
    -- Generate a "running total" of charging costs by charging station location
    SUM(___) OVER(
        ___ ___ ___
        ORDER BY charging_start_time
        ROWS BETWEEN ___ ___ AND ___ ___
    ) AS running_total_charging_cost,
	
    -- Build a window frame using the two preceding and two following sessions to find a moving average of energy consumed
    ___() OVER(
        PARTITION BY ___
        ORDER BY charging_start_time
        ROWS BETWEEN ___ ___ AND ___ ___
    ) AS moving_average_energy_consumed

FROM ELECTRIC_VEHICLES.charging
WHERE energy_consumed IS NOT NULL
ORDER BY charging_station_location, charging_start_time;