queries.sh

#! /bin/bash

PSQL="psql --username=freecodecamp --dbname=worldcup --no-align --tuples-only -c"

# Do not change code above this line. Use the PSQL variable above to query your database.

echo -e "\nTotal number of goals in all games from winning teams:"
echo "$($PSQL "SELECT SUM(winner_goals) FROM games;")"

echo -e "\nTotal number of goals in all games from both teams combined:"
echo "$($PSQL "SELECT SUM(winner_goals + opponent_goals) FROM games;")"

echo -e "\nAverage number of goals in all games from the winning teams:"
echo "$($PSQL "SELECT AVG(winner_goals) FROM games;")"

echo -e "\nAverage number of goals in all games from the winning teams rounded to two decimal places:"
echo "$($PSQL "SELECT ROUND(AVG(winner_goals), 2) FROM games;")"

echo -e "\nAverage number of goals in all games from both teams:"
echo "$($PSQL "SELECT AVG(winner_goals + opponent_goals) FROM games;")"

echo -e "\nMost goals scored in a single game by one team:"
echo "$($PSQL "SELECT MAX(winner_goals) FROM games;")"

echo -e "\nNumber of games where the winning team scored more than two goals:"
echo "$($PSQL "SELECT COUNT(*) FROM games WHERE winner_goals > 2;")"

echo -e "\nWinner of the 2018 tournament team name:"
echo "$($PSQL "SELECT name FROM teams RIGHT JOIN games ON teams.team_id = games.winner_id WHERE year = 2018 AND round = 'Final';")"

# TODO:
echo -e "\nList of teams who played in the 2014 'Eighth-Final' round:"
echo "$($PSQL "SELECT DISTINCT(name) FROM teams FULL JOIN games AS w ON teams.team_id = w.winner_id FULL JOIN games AS l ON teams.team_id = l.opponent_id WHERE (w.year = 2014 OR l.year = 2014) AND (w.round = 'Eighth-Final' OR l.round = 'Eighth-Final') ORDER BY name;")"

echo -e "\nList of unique winning team names in the whole data set:"
echo "$($PSQL "SELECT DISTINCT(name) FROM teams RIGHT JOIN games ON teams.team_id = games.winner_id ORDER BY name;")"

echo -e "\nYear and team name of all the champions:"
echo "$($PSQL "SELECT DISTINCT(year), name FROM teams RIGHT JOIN games ON teams.team_id = games.winner_id WHERE round = 'Final' ORDER BY year;")"

echo -e "\nList of teams that start with 'Co':"
echo "$($PSQL "SELECT name FROM teams WHERE name LIKE 'Co%' ORDER BY name;")"