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.
Cet exercice fait partie du cours
Reporting in SQL
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
-- 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;*/