Interpreting error messages
Inevitably, you will run into errors when running SQL queries. It is important to understand how to interpret these errors to correctly identify what type of error it is.
The console contains two separate queries, each which will output an error when ran. In this exercise, you will run each query, read the error message, and troubleshoot the error.
Deze oefening maakt deel uit van de cursus
Reporting in SQL
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
-- Run the query, then convert a data type to fix the error
SELECT AVG(pop_in_millions) AS avg_population
FROM country_stats;
/*SELECT
s.country_id,
COUNT(DISTINCT s.athlete_id) AS summer_athletes,
COUNT(DISTINCT w.athlete_id) AS winter_athletes
FROM summer_games AS s
JOIN winter_games_str AS w
ON s.country_id = w.country_id
GROUP BY s.country_id;*/