Basic CASE statements
What is your favorite team?
The European Soccer Database contains data about 12,800 matches from 11 countries played between 2011-2015! Throughout this course, you will be shown filtered versions of the tables in this database in order to better explore their contents.
In this exercise, you will identify matches played between FC Schalke 04 and FC Bayern Munich. There are 2 teams identified in each match in the hometeam_id and awayteam_id columns, available to you in the filtered matches_germany table. ID can join to the team_api_id column in the teams_germany table, but you cannot perform a join on both at the same time.
However, you can perform this operation using a CASE statement once you've identified the team_api_id associated with each team!
Latihan ini adalah bagian dari kursus
Data Manipulation in SQL
Petunjuk latihan
- Create a
CASEstatement that identifies whether a match in Germany includedFC Bayern Munich,FC Schalke 04, orOtheras the home team.
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
-- Identify the home team as Bayern Munich, Schalke 04, or Other
SELECT
___ ___ hometeam_id = 10189 ___ 'FC Schalke 04'
___ hometeam_id = 9823 ___ 'FC Bayern Munich'
ELSE 'Other' END AS home_team,
COUNT(id) AS total_matches
FROM matches_germany
GROUP BY home_team;