Exercise

Group by and aggregations

You decide to take another look at countries with missing population data. You join the World Bank demographics data to the Olympic oregions data.

You want to look at trends so group countries regionally so see how many countries, by region, are missing population data. You know you want to view the results by Olympic region and count the countries with population data using the country code olympic_cc.

Select Run Code to view the results. Did you get an error?

Read the red error message then follow the instructions below to correct the query.

Instructions

100 XP

Read the red error output.
Change the non-aggregated column in the SELECT clause to match the GROUP BY column .

Take Hint (-30 XP)