Exercise

Fixing incorrect groupings

One issues with having strings stored in different formats is that you may incorrectly group data. If the same value is represented in multiple ways, your report will split the values into different rows, which can lead to inaccurate conclusions.

In this exercise, you will query from the summer_games_messy table, which is a messy, smaller version of summer_games. You'll notice that the same event is stored in multiple ways. Your job is to clean the event field to show the correct number of rows.

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Create a query that pulls the number of distinct athletes by event from the table summer_games_messy.
Group by the non-aggregated field.