freeCodeCamp.org-Relational-Database
/
World-Cup-Database
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Solution

Browse Source
master
Manish 2 years ago
parent aef383ec0b
commit a39e540d67
7 changed files with 531 additions and 0 deletions
Show Stats Download Patch File Download Diff File

65
actual_output.txt
Unescape Escape View File

@ -0,0 +1,65 @@
Total number of goals in all games from winning teams:
68
Total number of goals in all games from both teams combined:
90
Average number of goals in all games from the winning teams:
2.1250000000000000
Average number of goals in all games from the winning teams rounded to two decimal places:
2.13
Average number of goals in all games from both teams:
2.8125000000000000
Most goals scored in a single game by one team:
7
Number of games where the winning team scored more than two goals:
6
Winner of the 2018 tournament team name:
France
List of teams who played in the 2014 'Eighth-Final' round:
Algeria
Argentina
Belgium
Brazil
Chile
Colombia
Costa Rica
France
Germany
Greece
Mexico
Netherlands
Nigeria
Switzerland
United States
Uruguay
List of unique winning team names in the whole data set:
Argentina
Belgium
Brazil
Colombia
Costa Rica
Croatia
England
France
Germany
Netherlands
Russia
Sweden
Uruguay
Year and team name of all the champions:
2014|Germany
2018|France
List of teams that start with 'Co':
Colombia
Costa Rica

65
expected_output.txt
Unescape Escape View File

@ -0,0 +1,65 @@
Total number of goals in all games from winning teams:
68
Total number of goals in all games from both teams combined:
90
Average number of goals in all games from the winning teams:
2.1250000000000000
Average number of goals in all games from the winning teams rounded to two decimal places:
2.13
Average number of goals in all games from both teams:
2.8125000000000000
Most goals scored in a single game by one team:
7
Number of games where the winning team scored more than two goals:
6
Winner of the 2018 tournament team name:
France
List of teams who played in the 2014 'Eighth-Final' round:
Algeria
Argentina
Belgium
Brazil
Chile
Colombia
Costa Rica
France
Germany
Greece
Mexico
Netherlands
Nigeria
Switzerland
United States
Uruguay
List of unique winning team names in the whole data set:
Argentina
Belgium
Brazil
Colombia
Costa Rica
Croatia
England
France
Germany
Netherlands
Russia
Sweden
Uruguay
Year and team name of all the champions:
2014|Germany
2018|France
List of teams that start with 'Co':
Colombia
Costa Rica

33
games.csv
Unescape Escape View File

@ -0,0 +1,33 @@
year,round,winner,opponent,winner_goals,opponent_goals
2018,Final,France,Croatia,4,2
2018,Third Place,Belgium,England,2,0
2018,Semi-Final,Croatia,England,2,1
2018,Semi-Final,France,Belgium,1,0
2018,Quarter-Final,Croatia,Russia,3,2
2018,Quarter-Final,England,Sweden,2,0
2018,Quarter-Final,Belgium,Brazil,2,1
2018,Quarter-Final,France,Uruguay,2,0
2018,Eighth-Final,England,Colombia,2,1
2018,Eighth-Final,Sweden,Switzerland,1,0
2018,Eighth-Final,Belgium,Japan,3,2
2018,Eighth-Final,Brazil,Mexico,2,0
2018,Eighth-Final,Croatia,Denmark,2,1
2018,Eighth-Final,Russia,Spain,2,1
2018,Eighth-Final,Uruguay,Portugal,2,1
2018,Eighth-Final,France,Argentina,4,3
2014,Final,Germany,Argentina,1,0
2014,Third Place,Netherlands,Brazil,3,0
2014,Semi-Final,Argentina,Netherlands,1,0
2014,Semi-Final,Germany,Brazil,7,1
2014,Quarter-Final,Netherlands,Costa Rica,1,0
2014,Quarter-Final,Argentina,Belgium,1,0
2014,Quarter-Final,Brazil,Colombia,2,1
2014,Quarter-Final,Germany,France,1,0
2014,Eighth-Final,Brazil,Chile,2,1
2014,Eighth-Final,Colombia,Uruguay,2,0
2014,Eighth-Final,France,Nigeria,2,0
2014,Eighth-Final,Germany,Algeria,2,1
2014,Eighth-Final,Netherlands,Mexico,2,1
2014,Eighth-Final,Costa Rica,Greece,2,1
2014,Eighth-Final,Argentina,Switzerland,1,0
2014,Eighth-Final,Belgium,United States,2,1
1 year round winner opponent winner_goals opponent_goals
2 2018 Final France Croatia 4 2
3 2018 Third Place Belgium England 2 0
4 2018 Semi-Final Croatia England 2 1
5 2018 Semi-Final France Belgium 1 0
6 2018 Quarter-Final Croatia Russia 3 2
7 2018 Quarter-Final England Sweden 2 0
8 2018 Quarter-Final Belgium Brazil 2 1
9 2018 Quarter-Final France Uruguay 2 0
10 2018 Eighth-Final England Colombia 2 1
11 2018 Eighth-Final Sweden Switzerland 1 0
12 2018 Eighth-Final Belgium Japan 3 2
13 2018 Eighth-Final Brazil Mexico 2 0
14 2018 Eighth-Final Croatia Denmark 2 1
15 2018 Eighth-Final Russia Spain 2 1
16 2018 Eighth-Final Uruguay Portugal 2 1
17 2018 Eighth-Final France Argentina 4 3
18 2014 Final Germany Argentina 1 0
19 2014 Third Place Netherlands Brazil 3 0
20 2014 Semi-Final Argentina Netherlands 1 0
21 2014 Semi-Final Germany Brazil 7 1
22 2014 Quarter-Final Netherlands Costa Rica 1 0
23 2014 Quarter-Final Argentina Belgium 1 0
24 2014 Quarter-Final Brazil Colombia 2 1
25 2014 Quarter-Final Germany France 1 0
26 2014 Eighth-Final Brazil Chile 2 1
27 2014 Eighth-Final Colombia Uruguay 2 0
28 2014 Eighth-Final France Nigeria 2 0
29 2014 Eighth-Final Germany Algeria 2 1
30 2014 Eighth-Final Netherlands Mexico 2 1
31 2014 Eighth-Final Costa Rica Greece 2 1
32 2014 Eighth-Final Argentina Switzerland 1 0
33 2014 Eighth-Final Belgium United States 2 1

5
games_test.csv
Unescape Escape View File

@ -0,0 +1,5 @@
year,round,winner,opponent,winner_goals,opponent_goals
2018,Final,France,Croatia,4,2
2018,Third Place,Belgium,England,2,0
2018,Semi-Final,Croatia,England,2,1
2018,Semi-Final,France,Belgium,1,0
1 year round winner opponent winner_goals opponent_goals
2 2018 Final France Croatia 4 2
3 2018 Third Place Belgium England 2 0
4 2018 Semi-Final Croatia England 2 1
5 2018 Semi-Final France Belgium 1 0

64
insert_data.sh
Unescape Escape View File

@ -0,0 +1,64 @@
#! /bin/bash
if [[ $1 == "test" ]]
then
PSQL="psql --username=postgres --dbname=worldcuptest -t --no-align -c"
else
PSQL="psql --username=freecodecamp --dbname=worldcup -t --no-align -c"
fi
# Do not change code above this line. Use the PSQL variable above to query your database.
echo $($PSQL "TRUNCATE teams, games")
cat games_test.csv | while IFS="," read YEAR ROUND WINNER OPPONENT WINNER_GOALS OPPONENT_GOALS
do
if [[ $YEAR != year ]]
then
echo $YEAR : $ROUND : $WINNER : $OPPONENT : $WINNER_GOAL : $OPPONENT_GOAL
# insert teams
WINNER_ID=$($PSQL "SELECT team_id FROM teams WHERE name='$WINNER'")
if [[ -z $WINNER_ID ]]
then
INSERT_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$WINNER')")
if [[ $INSERT_RESULT == "INSERT 0 1" ]]
then
echo Inserted team, $WINNER
WINNER_ID=$($PSQL "SELECT team_id FROM teams WHERE name='$WINNER'")
else
echo Insert failed: $INSERT_RESULT
exit
fi
else
echo Already exist, $WINNER : $WINNER_ID
fi
OPPONENT_ID=$($PSQL "SELECT team_id FROM teams WHERE name='$OPPONENT'")
if [[ -z $OPPONENT_ID ]]
then
INSERT_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$OPPONENT')")
if [[ $INSERT_RESULT == "INSERT 0 1" ]]
then
echo Inserted team, $OPPONENT
OPPONENT_ID=$($PSQL "SELECT team_id FROM teams WHERE name='$OPPONENT'")
else
echo Insert failed: $INSERT_RESULT
exit
fi
else
echo Already exist, $OPPONENT : $OPPONENT_ID
fi
# insert games using teams id
GAME_INSERT_RESULT=$($PSQL "INSERT INTO games(year, round, winner_id, opponent_id, winner_goals, opponent_goals) VALUES($YEAR, '$ROUND', $WINNER_ID, $OPPONENT_ID, $WINNER_GOALS, $OPPONENT_GOALS)")
if [[ $GAME_INSERT_RESULT == "INSERT 0 1" ]]
then
echo Inssert succesful, $GAME_INSERT_RESULT : $YEAR : $ROUND : $WINNER_ID : $OPPONENT_ID : $WINNER_GOALS : $OPPONENET_GOALS
else
echo Game Insert Failed, $GAME_INSERT_RESULT : $YEAR : $ROUND : $WINNER_ID : $OPPONENT_ID : $WINNER_GOALS : $OPPONENET_GOALS
exit
fi
fi
done

41
queries.sh
Unescape Escape View File

@ -0,0 +1,41 @@
#! /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) + SUM(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 games FULL JOIN teams ON games.winner_id = teams.team_id WHERE year=2018 AND round='Final'")"
echo -e "\nList of teams who played in the 2014 'Eighth-Final' round:"
echo -e "$($PSQL "(SELECT name FROM games INNER JOIN teams ON games.winner_id = teams.team_id WHERE year=2014 AND round='Eighth-Final') UNION (SELECT name FROM games FULL JOIN teams ON games.opponent_id = teams.team_id WHERE year=2014 AND round='Eighth-Final') ORDER BY name")"
echo -e "\nList of unique winning team names in the whole data set:"
echo -e "$($PSQL "SELECT DISTINCT(name) FROM games INNER JOIN teams ON games.winner_id = teams.team_id ORDER BY name")"
echo -e "\nYear and team name of all the champions:"
echo -e "$($PSQL "SELECT year, name FROM games INNER JOIN teams ON games.winner_id = teams.team_id WHERE round='Final' ORDER BY year")"
echo -e "\nList of teams that start with 'Co':"
echo -e "$($PSQL "SELECT name FROM teams WHERE name LIKE 'Co%'")"

258
worldcup.sql
Unescape Escape View File

@ -0,0 +1,258 @@
--
-- PostgreSQL database dump
--
-- Dumped from database version 12.9 (Ubuntu 12.9-2.pgdg20.04+1)
-- Dumped by pg_dump version 12.9 (Ubuntu 12.9-2.pgdg20.04+1)
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
DROP DATABASE worldcup;
--
-- Name: worldcup; Type: DATABASE; Schema: -; Owner: freecodecamp
--
CREATE DATABASE worldcup WITH TEMPLATE = template0 ENCODING = 'UTF8' LC_COLLATE = 'C.UTF-8' LC_CTYPE = 'C.UTF-8';
ALTER DATABASE worldcup OWNER TO freecodecamp;
\connect worldcup
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
SET default_tablespace = '';
SET default_table_access_method = heap;
--
-- Name: games; Type: TABLE; Schema: public; Owner: freecodecamp
--
CREATE TABLE public.games (
game_id integer NOT NULL,
year integer NOT NULL,
round character varying(100) NOT NULL,
winner_id integer NOT NULL,
opponent_id integer NOT NULL,
winner_goals integer NOT NULL,
opponent_goals integer NOT NULL
);
ALTER TABLE public.games OWNER TO freecodecamp;
--
-- Name: games_game_id_seq; Type: SEQUENCE; Schema: public; Owner: freecodecamp
--
CREATE SEQUENCE public.games_game_id_seq
AS integer
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
CACHE 1;
ALTER TABLE public.games_game_id_seq OWNER TO freecodecamp;
--
-- Name: games_game_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: freecodecamp
--
ALTER SEQUENCE public.games_game_id_seq OWNED BY public.games.game_id;
--
-- Name: teams; Type: TABLE; Schema: public; Owner: freecodecamp
--
CREATE TABLE public.teams (
team_id integer NOT NULL,
name character varying(100) NOT NULL
);
ALTER TABLE public.teams OWNER TO freecodecamp;
--
-- Name: teams_team_id_seq; Type: SEQUENCE; Schema: public; Owner: freecodecamp
--
CREATE SEQUENCE public.teams_team_id_seq
AS integer
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
CACHE 1;
ALTER TABLE public.teams_team_id_seq OWNER TO freecodecamp;
--
-- Name: teams_team_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: freecodecamp
--
ALTER SEQUENCE public.teams_team_id_seq OWNED BY public.teams.team_id;
--
-- Name: games game_id; Type: DEFAULT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.games ALTER COLUMN game_id SET DEFAULT nextval('public.games_game_id_seq'::regclass);
--
-- Name: teams team_id; Type: DEFAULT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.teams ALTER COLUMN team_id SET DEFAULT nextval('public.teams_team_id_seq'::regclass);
--
-- Data for Name: games; Type: TABLE DATA; Schema: public; Owner: freecodecamp
--
INSERT INTO public.games VALUES (9, 2018, 'Final', 27, 28, 4, 2);
INSERT INTO public.games VALUES (10, 2018, 'Third Place', 29, 30, 2, 0);
INSERT INTO public.games VALUES (11, 2018, 'Semi-Final', 28, 30, 2, 1);
INSERT INTO public.games VALUES (12, 2018, 'Semi-Final', 27, 29, 1, 0);
INSERT INTO public.games VALUES (13, 2018, 'Quarter-Final', 28, 31, 3, 2);
INSERT INTO public.games VALUES (14, 2018, 'Quarter-Final', 30, 32, 2, 0);
INSERT INTO public.games VALUES (15, 2018, 'Quarter-Final', 29, 33, 2, 1);
INSERT INTO public.games VALUES (16, 2018, 'Quarter-Final', 27, 34, 2, 0);
INSERT INTO public.games VALUES (17, 2018, 'Eighth-Final', 30, 35, 2, 1);
INSERT INTO public.games VALUES (18, 2018, 'Eighth-Final', 32, 36, 1, 0);
INSERT INTO public.games VALUES (19, 2018, 'Eighth-Final', 29, 37, 3, 2);
INSERT INTO public.games VALUES (20, 2018, 'Eighth-Final', 33, 38, 2, 0);
INSERT INTO public.games VALUES (21, 2018, 'Eighth-Final', 28, 39, 2, 1);
INSERT INTO public.games VALUES (22, 2018, 'Eighth-Final', 31, 40, 2, 1);
INSERT INTO public.games VALUES (23, 2018, 'Eighth-Final', 34, 41, 2, 1);
INSERT INTO public.games VALUES (24, 2018, 'Eighth-Final', 27, 42, 4, 3);
INSERT INTO public.games VALUES (25, 2014, 'Final', 43, 42, 1, 0);
INSERT INTO public.games VALUES (26, 2014, 'Third Place', 44, 33, 3, 0);
INSERT INTO public.games VALUES (27, 2014, 'Semi-Final', 42, 44, 1, 0);
INSERT INTO public.games VALUES (28, 2014, 'Semi-Final', 43, 33, 7, 1);
INSERT INTO public.games VALUES (29, 2014, 'Quarter-Final', 44, 45, 1, 0);
INSERT INTO public.games VALUES (30, 2014, 'Quarter-Final', 42, 29, 1, 0);
INSERT INTO public.games VALUES (31, 2014, 'Quarter-Final', 33, 35, 2, 1);
INSERT INTO public.games VALUES (32, 2014, 'Quarter-Final', 43, 27, 1, 0);
INSERT INTO public.games VALUES (33, 2014, 'Eighth-Final', 33, 46, 2, 1);
INSERT INTO public.games VALUES (34, 2014, 'Eighth-Final', 35, 34, 2, 0);
INSERT INTO public.games VALUES (35, 2014, 'Eighth-Final', 27, 47, 2, 0);
INSERT INTO public.games VALUES (36, 2014, 'Eighth-Final', 43, 48, 2, 1);
INSERT INTO public.games VALUES (37, 2014, 'Eighth-Final', 44, 38, 2, 1);
INSERT INTO public.games VALUES (38, 2014, 'Eighth-Final', 45, 49, 2, 1);
INSERT INTO public.games VALUES (39, 2014, 'Eighth-Final', 42, 36, 1, 0);
INSERT INTO public.games VALUES (40, 2014, 'Eighth-Final', 29, 50, 2, 1);
--
-- Data for Name: teams; Type: TABLE DATA; Schema: public; Owner: freecodecamp
--
INSERT INTO public.teams VALUES (27, 'France');
INSERT INTO public.teams VALUES (28, 'Croatia');
INSERT INTO public.teams VALUES (29, 'Belgium');
INSERT INTO public.teams VALUES (30, 'England');
INSERT INTO public.teams VALUES (31, 'Russia');
INSERT INTO public.teams VALUES (32, 'Sweden');
INSERT INTO public.teams VALUES (33, 'Brazil');
INSERT INTO public.teams VALUES (34, 'Uruguay');
INSERT INTO public.teams VALUES (35, 'Colombia');
INSERT INTO public.teams VALUES (36, 'Switzerland');
INSERT INTO public.teams VALUES (37, 'Japan');
INSERT INTO public.teams VALUES (38, 'Mexico');
INSERT INTO public.teams VALUES (39, 'Denmark');
INSERT INTO public.teams VALUES (40, 'Spain');
INSERT INTO public.teams VALUES (41, 'Portugal');
INSERT INTO public.teams VALUES (42, 'Argentina');
INSERT INTO public.teams VALUES (43, 'Germany');
INSERT INTO public.teams VALUES (44, 'Netherlands');
INSERT INTO public.teams VALUES (45, 'Costa Rica');
INSERT INTO public.teams VALUES (46, 'Chile');
INSERT INTO public.teams VALUES (47, 'Nigeria');
INSERT INTO public.teams VALUES (48, 'Algeria');
INSERT INTO public.teams VALUES (49, 'Greece');
INSERT INTO public.teams VALUES (50, 'United States');
--
-- Name: games_game_id_seq; Type: SEQUENCE SET; Schema: public; Owner: freecodecamp
--
SELECT pg_catalog.setval('public.games_game_id_seq', 40, true);
--
-- Name: teams_team_id_seq; Type: SEQUENCE SET; Schema: public; Owner: freecodecamp
--
SELECT pg_catalog.setval('public.teams_team_id_seq', 50, true);
--
-- Name: games games_pkey; Type: CONSTRAINT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.games
ADD CONSTRAINT games_pkey PRIMARY KEY (game_id);
--
-- Name: teams teams_name_key; Type: CONSTRAINT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.teams
ADD CONSTRAINT teams_name_key UNIQUE (name);
--
-- Name: teams teams_pkey; Type: CONSTRAINT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.teams
ADD CONSTRAINT teams_pkey PRIMARY KEY (team_id);
--
-- Name: games games_opponent_id_fkey; Type: FK CONSTRAINT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.games
ADD CONSTRAINT games_opponent_id_fkey FOREIGN KEY (opponent_id) REFERENCES public.teams(team_id);
--
-- Name: games games_winner_id_fkey; Type: FK CONSTRAINT; Schema: public; Owner: freecodecamp
--
ALTER TABLE ONLY public.games
ADD CONSTRAINT games_winner_id_fkey FOREIGN KEY (winner_id) REFERENCES public.teams(team_id);
--
-- PostgreSQL database dump complete
--
Write Preview
Loading…
Cancel
Save