MySQL JDBC Syntax Error - mysql

Question

I am writing a simple database with a query that inserts some data, modifies a entry, deletes it, then prints out the rest.
import java.sql.*;
public class SpotifyDB {
//JDBC driver name and database URL
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL = "jdbc:mysql://localhost/spotify";
static final int portNumber = 3306;
static final String serverName = "localhost";
static final String dbName = "spotify";
//Database credentials
static final String USER = "root";
static final String PASS = "root";
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
try{
//Register JDBC driver
Class.forName("com.mysql.jdbc.Driver");
//Open a connection to the database
System.out.println("Connecting to a selected database...");
conn = DriverManager.getConnection(DB_URL, USER, PASS);
System.out.println("Connected database successfully...");
//Insert data
System.out.println("Inserting records into the table...");
stmt = conn.createStatement();
String sql = "INSERT INTO artist(artist) " +
"values('Muse')";
stmt.executeUpdate(sql);
sql = "INSERT INTO album(album, artist, genre, year)" +
"values('Drones', 'Muse', 'Rock', 2015)";
stmt.executeUpdate(sql);
sql = "INSERT INTO album(album, artist, genre, year)" +
"values('The 2nd Law', 'Muse', 'Rock', 2012)";
stmt.executeUpdate(sql);
sql = ("INSERT INTO songs(song, artist, album, tracknumber, duration)" +
"values('Madness', 'Muse', 'The 2nd Law', 2, '4:41')");
stmt.executeUpdate(sql);
sql = ("INSERT INTO songs(song, artist, album, tracknumber, duration)" +
"values('Mercy', 'Muse', 'Drones', 4, '3:52')");
stmt.executeUpdate(sql);
System.out.println("Records inserted into the table!");
//Update data
String sql1 = "UPDATE songs " +
"SET track number = 1 WHERE song in ('Madness')";
stmt.executeUpdate(sql1);
//Delete data
String sql2 = "DELETE FROM songs " +
"WHERE song = Madness";
stmt.executeUpdate(sql2);
//View records
String sql3 = "SELECT * FROM songs";
ResultSet rs = stmt.executeQuery(sql3);
while(rs.next()) {
//Retrieve by column name
String song = rs.getString("song");
String artist = rs.getString("artist");
String album = rs.getString("album");
String track = rs.getString("track number");
String duration = rs.getString("duration");
//Display the values
System.out.print("Song: " + song);
System.out.print(", Artist: " + artist);
System.out.print(", Album: " + album);
System.out.println(", Track: " + track);
System.out.println(", Duration: " + duration);
}
//Close the connection, clean up running functions
rs.close();
stmt.close();
conn.close();
}
catch(SQLException se) {
//Handle errors for JDBC driver
se.printStackTrace();
}
catch(Exception e) {
//Handle errors for Class.forName
e.printStackTrace();
}
finally {
//finally used to close resources
try{
if(stmt!=null)
stmt.close();
}
catch(SQLException se2) {
}
try{
if(conn!=null)
conn.close();
}
catch(SQLException se) {
se.printStackTrace();
}
}
System.out.println("Goodbye!");
}
}
My SQL Database table is quite simple as well;
CREATE TABLE spotify.`songs` (
`song` varchar(20) NOT NULL,
`artist` varchar(20) NOT NULL,
`album` varchar(20) NOT NULL,
`track number` int(3) NOT NULL,
`duration` varchar(10) NOT NULL,
PRIMARY KEY (`song`),
KEY `songalbum_idx` (`album`),
KEY `songartist` (`artist`),
CONSTRAINT `songalbum` FOREIGN KEY (`album`) REFERENCES `album` (`album`)
ON DELETE CASCADE
ON UPDATE CASCADE,
CONSTRAINT `songartist` FOREIGN KEY (`artist`) REFERENCES `artist` (`artist`)
ON DELETE CASCADE
ON UPDATE CASCADE);
and the console is returning me this error: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException
I am having trouble seeing where the table columns are not matching up, any help would be appreciated. Thank you!

Answer 1

Column names really shouldn't have spaces, for exactly this reason. But if your column names must have spaces then you need to qualify them with back-ticks exactly as you do in your CREATE TABLE statement:
INSERT INTO songs (song, artist, album, `track number`, duration) VALUES ...
Otherwise after the identifier track the query engine is expecting either a comma (to move on to another identifier) or a close parentheses (to end the list of column identifiers). It finds neither of this, and immediately finds another identifier (number, which may even be a reserved word?). This confuses the query parser.