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package.json

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+{
+  "name": "poll-db-2",
+  "version": "1.0.0",
+  "description": "",
+  "main": "seed-data.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/platinum-fox-2017/poll-db-2.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/platinum-fox-2017/poll-db-2/issues"
+  },
+  "homepage": "https://github.com/platinum-fox-2017/poll-db-2#readme",
+  "dependencies": {
+    "sqlite3": "^3.1.13"
+  }
+}

politicians.csv

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+name,party,location,grade_current
+Aaron Schock,R,IL,11.5362423
+Adam Kinzinger,R,IL,8.995621754
+Adam Schiff,D,LA,13.0347375
+Adam Smith,D,WA,10.23695519
+Anna Eshoo,D,WA,10.65351543
+Bill Cassidy,R,LA,9.285165569
+Candice Miller,R,WA,11.70865922
+Carolyn Maloney,D,NY,13.03522892
+Dana Rohrabacher,R,NY,10.64634133
+Duncan Hunter,R,IL,13.66509733
+Erik Paulsen,R,LA,11.69134788
+Frank Guinta,R,HI,10.94131093
+Frank LoBiondo,R,HI,13.08452404
+John Kerry,D,LA,11.01029616
+Joseph Lieberman,I,NY,7.95536381
+Michael Bennet,D,IL,7.98091322
+Olympia Snowe,R,WA,13.80125838
+Richard Shelby,R,HI,11.31326157
+Yvette Clarke,D,NY,12.45211362
+Zoe Lofgren,D,HI,12.76643582

seed-data.js

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+const sqlite3 = require('sqlite3').verbose();
+const db = new sqlite3.Database('pollDB');
+
+const fs = require ('fs');
+var politicians = fs.readFileSync('politicians.csv','UTF-8')
+  .split('\n');
+var voters = fs.readFileSync('voters.csv','UTF-8')
+  .split('\n');
+var votes = fs.readFileSync('votes.csv','UTF-8')
+  .split('\n');
+
+db.serialize(function() {
+  let insertPoliticians = db.prepare("INSERT INTO Politicians (name,party,location,gradeCurrent) VALUES (?,?,?,?)");
+  for (let i=1; i<politicians.length-1; i++){
+    let politician = politicians[i].split(',');
+    let nama = politician[0];
+    let party = politician[1];
+    let location = politician[2];
+    let gradeCurrent = politician[3];
+    insertPoliticians.run(nama,party,location,gradeCurrent);
+  }
+  insertPoliticians.finalize();
+
+  let inserVoters = db.prepare("INSERT INTO Voters (firstName,lastName,gender,age) VALUES (?,?,?,?)");
+  for (let i=1; i<voters.length-1; i++){
+    let voter = voters[i].split(',');
+    let firstName = voter[0];
+    let lastName = voter[1];
+    let gender = voter[2];
+    let age = voter[3];
+    inserVoters.run(firstName,lastName,gender,age);
+  }
+  inserVoters.finalize();
+
+  let insertVotes = db.prepare("INSERT INTO Votes (voterId,politicianId) VALUES (?,?)");
+  for (let i=1; i<votes.length-1; i++){
+    let vote = votes[i].split(',');
+    let voteId = vote[0];
+    let politicianId = vote[1];
+    insertVotes.run(voteId,politicianId);
+  }
+  insertVotes.finalize();
+  console.log('Insert All Data, Complete');
+
+});
+
+db.close();

setup.js

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+const sqlite3 = require('sqlite3').verbose();
+const db = new sqlite3.Database('pollDB');
+
+db.serialize(function() {
+  db.run("DROP TABLE IF EXISTS Politicians");
+
+  db.run("DROP TABLE IF EXISTS Voters");
+
+  db.run("DROP TABLE IF EXISTS Votes");
+
+  db.run("CREATE TABLE Politicians (id INTEGER PRIMARY KEY AUTOINCREMENT, name VARCHAR(50), party VARCHAR(2), location VARCHAR(2), gradeCurrent REAL)");
+
+  db.run("CREATE TABLE Voters (id INTEGER PRIMARY KEY AUTOINCREMENT, firstName VARCHAR(25), lastName VARCHAR(25), gender VARCHAR(10), age REAL)");
+
+  db.run("CREATE TABLE Votes (id INTEGER PRIMARY KEY AUTOINCREMENT, voterId INTEGER, politicianId INTEGER, FOREIGN KEY(voterId) REFERENCES Voters (id), FOREIGN KEY (politicianId) REFERENCES Politicians (id))");
+});
+
+db.close();

view.js

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+const sqlite3 = require('sqlite3').verbose();
+const db = new sqlite3.Database('pollDB');
+
+db.serialize(function(){
+  // 1. nama politisi grade dibawah 9, urutkan asc
+  // db.all(`SELECT name,location,gradeCurrent,COUNT(*) AS totalVote
+  // FROM Votes
+  // JOIN Politicians on
+  //   Votes.politicianId = Politicians.id
+  // WHERE gradeCurrent < 9
+  // GROUP BY name
+  // ORDER BY gradeCurrent ASC`,function(err, rows){
+  //   if(err){
+  //     console.log(err);
+  //   } else {
+  //     console.log(rows);
+  //   }
+  // });
+
+  // 2. 3 politisi dengan vote terbanyak dan siapa saja yang memilih politisi tersebut
+  db.all(`SELECT totalVote, politicianName, firstName||' '||lastName AS voterName, gender, Three.id
+  FROM (SELECT count(*) AS totalVote, name AS politicianName, Politicians.id FROM Votes
+  JOIN Politicians ON Votes.politicianId = Politicians.id GROUP BY name ORDER BY totalVote DESC
+  LIMIT 3) AS Three
+  JOIN Votes ON Votes.politicianId = Three.id
+  JOIN Voters ON Voters.id = Votes.voterId
+  ORDER BY Three.id DESC`
+  , function(err,rows){
+    if(err){
+      console.log(err);
+    } else {
+      console.log(rows);
+    }
+  }); // belom selesai
+
+  // 3. orang curang vote >1
+  // db.all(`SELECT count(*) AS totalVote, firstName||' '||lastName AS name, gender, age
+  // FROM Votes
+  // JOIN Voters
+  //   ON Voters.id = Votes.voterId
+  // GROUP BY name
+  // HAVING totalVote > 1
+  // ORDER BY totalVote DESC`, function(err,rows){
+  //   if(err){
+  //     console.log(err);
+  //   } else {
+  //     console.log(rows);
+  //   }
+  // });
+});
+
+db.close();

voters.csv

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+first_name,last_name,gender,age
+Aaliyah,Langworth,male,61
+Aaliyah,VonRueden,male,73
+Aaliyah,Konopelski,female,39
+Abdullah,Block,male,66
+Amaya,Satterfield,male,23
+Barbara,Ortiz,female,76
+Barney,Lubowitz,female,76
+Berniece,Sanford,female,23
+Betsy,Blick,male,23
+Buster,Hodkiewicz,male,56
+Cade,Batz,female,61
+Cameron,Walsh,female,30
+Cameron,Dickinson,female,36
+Camilla,Feil,male,23
+Candice,Torp,female,23
+Courtney,Spinka,female,42
+Devon,Kutch,female,26
+Devon,Mayer,female,71
+Devon,Waters,female,70
+Devonte,Erdman,female,27
+Devonte,Pfeffer,male,29
+Dora,Schinner,male,78
+Dora,Cole,female,18
+Duncan,Dach,male,70
+Duncan,O'Reilly,male,75
+Durward,Stroman,male,37
+Elias,Watsica,female,50
+Eliezer,Predovic,female,30
+Elinore,Collier,female,75
+Emmett,Corkery,female,88
+Emmie,Swaniawski,female,76
+Fabian,Murphy,female,85
+Fabian,Keeling,male,76
+Fabian,Nolan,male,70
+Fabiola,Klocko,female,45
+Furman,Crist,male,23
+Furman,Waelchi,female,26
+Gabriel,Ledner,male,62
+Gabriel,Dicki,female,87
+Gerald,Bernier,male,23
+Graciela,Berge,female,21
+Grady,Grady,female,34
+Graham,Hoppe,female,19
+Graham,Padberg,male,58
+Harley,Murphy,male,72
+Harley,Runolfsdottir,female,37
+Hudson,Streich,male,25
+Hudson,Donnelly,male,20
+Hugh,Feil,male,33
+Hunter,Erdman,male,68
+Hyman,Grant,male,74
+Ian,Dibbert,male,40
+Isaac,Ratke,male,81
+Isabell,Price,male,73
+Iva,Roob,female,44
+Ivah,Raynor,male,71
+Ivory,Gorczany,female,61
+Ivory,Wolf,female,38
+Ivy,Stehr,female,89
+Janice,Zboncak,male,48
+Janice,Erdman,male,57
+Jason,Erdman,male,37
+Jason,Lang,female,56
+Jenifer,Lind,male,47
+Jennie,Mante,female,21
+Margarett,Wilkinson,male,73
+Margarett,Schultz,female,36
+Margaretta,Koepp,male,72
+Neoma,Gottlieb,male,38
+Nona,Murazik,female,88
+Norbert,Kozey,male,41
+Ottilie,Lakin,female,88
+Prudence,Bergstrom,female,33
+Prudence,Brakus,female,67
+Prudence,Goldner,male,37
+Prudence,Kilback,female,88
+Queen,White,female,64
+Ricardo,Koss,female,65
+Richie,Eichmann,male,85
+Richie,Sanford,female,70
+Santino,Labadie,male,18
+Santino,Nienow,female,62
+Santos,Hintz,female,20
+Santos,Jaskolski,female,79
+Sarah,Feeney,female,64
+Sarah,Hyatt,female,26
+Theodore,Ferry,female,89
+Theodore,Stamm,male,56
+Theresa,Price,female,83
+Theresia,Fay,male,64
+Theresia,Rohan,female,20
+Tobin,Streich,male,77
+Toby,Terry,female,19
+Toby,Wehner,male,18
+Tom,Huel,female,45
+Ursula,Bednar,male,65
+Ursula,Mayer,male,63
+Ursula,Hahn,female,87
+Vanessa,O'Hara,male,28
+Vanessa,Rodriguez,female,40
+Walker,Sauer,male,19
+Walker,Reichert,male,21
+Walker,Stoltenberg,female,59
+Walker,Stiedemann,female,32
+Wallace,Klein,female,41
+Walter,Franecki,female,68
+Walter,Kuvalis,male,22
+Walton,Jerde,female,73
+Xavier,Harber,female,38
+Xavier,Braun,female,41
+Xavier,Streich,female,28
+Yadira,Krajcik,female,81
+Yasmeen,Lubowitz,male,41
+Yasmeen,Thompson,female,80
+Yasmine,Keeling,male,61
+Yasmine,Rippin,female,77
+Yesenia,Schaden,female,55
+Yesenia,Watsica,female,26
+Yessenia,Hudson,female,42
+Yolanda,Jones,male,24
+Yolanda,Reynolds,female,26
+Yolanda,Abernathy,male,90
+Yoshiko,Zulauf,male,42
+Yoshiko,Klein,male,37
+Yvette,Schuster,male,76
+Yvette,Russel,male,88
+Yvonne,Wolff,male,31
+Zachariah,Dach,male,18
+Zachary,Hackett,female,45
+Zachary,Durgan,male,69
+Zachery,Metz,female,52
+Zachery,Lehner,female,25
+Zackary,Funk,female,77
+Zackery,Schuster,female,53
+Zakary,Schiller,male,78
+Zakary,Lehner,female,19
+Zakary,Hodkiewicz,female,62
+Zakary,Padberg,male,30
+Zander,Runte,male,50
+Zane,Little,female,59
+Zaria,Reichert,male,55
+Zaria,Towne,male,85
+Zechariah,Wolff,female,60
+Zechariah,Johnson,female,61
+Zelma,Langworth,male,87
+Zoe,Bernier,female,55
+Zoe,Crona,male,32
+Zoie,Waters,female,21
+Zoila,Leffler,male,72
+Zoila,Cummings,male,52