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You have been given monthly temperature data for various weather stations and are conducting an analysis on the minimum temperatures across the stations.

You're interested in grouping the data by the station_id and comparing the monthly minimum temperature with the minimum overall temperature of that station for the year 2010.

This exercise is part of the course

Time Series Analysis in PostgreSQL

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Exercise instructions

  • Use a window function to find the minimum t_monthly_min that is grouped by station_id, filtered for the year 2010.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

-- Use a window function to find the minimum temperatures
SELECT
	station_id,
    year_month,
    t_monthly_min,
    ___
FROM temperatures_monthly
WHERE ___;
Edit and Run Code