I'm trying to create a SQLite for my game, and its working fine until I try to put some variables in the table HighScores.
If I try to put a variable it only works if I delete the "NOT NULL".
public void SQLite(){
Connection c = null;
Statement stmt = null;
try {
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:test.db");
stmt = c.createStatement();
String sql = "CREATE TABLE HighScores " +
"(ID INT PRIMARY KEY NOT NULL," +
" POINTS INT NOT NULL, " +
" NAME CHAR(50) NOT NULL, " +
" TIME INT NOT NULL, " +
" LEVEL INT NOT NULL)";
stmt.executeUpdate(sql);
c.setAutoCommit(false);
System.out.println("Opened database successfully");
stmt = c.createStatement();
String sql2 = "INSERT INTO HIGHSCORES (ID,POINTS,NAME,TIME,LEVEL) " +
"VALUES (1, ?, 'rodrigo', 99, 1 );";
PreparedStatement ps = c.prepareStatement(sql2);
ps.setInt(1, 5);
stmt.executeUpdate(sql2);
stmt.close();
c.commit();
c.close();
} catch ( Exception e ) {
System.err.println( e.getClass().getName() + ": " + e.getMessage() );
System.exit(0);
}
}
Opened database successfully.
java.sql.SQLException: NOT NULL constraint failed: HighScores.POINTS
You are calling executeUpdate on stmt instead of the prepared statement. Since sql2 does not have any value for POINTS, it try to insert null hence the exception.
Change :
stmt.executeUpdate(sql2);
to
ps.executeUpdate();
i added sqlite-jdbc-3.7.2.jar to build path. I used insert query. when i opened the wellec.db with notepad, i can see records. But my select is not working.
HERE WellInfo class properties
public Integer wellID;
public Integer measurement;
public String wellname;
public Integer wellstatus;
public String licenseno;
public String gl;
public String kb;
public String spuddate;
public String drillingenddate;
public String totaldepth;
public String notes;
public String easting;
public String northing;
public String coordinatesystem;
public Integer islogadd;
here is my createtable sql
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:wellec.db");
c.setAutoCommit(false);
System.out.println("Opened database successfully");
stmt = c.createStatement();
String sql = "CREATE TABLE IF NOT EXISTS WELLINFO " +
"(ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL ," +
" WELLNAME CHAR(90) NOT NULL, " +
" WELLSTATUS INT NOT NULL," +
" MEASUREMENT INT NOT NULL," +
" ISLOGADD INT NOT NULL," +
" GL CHAR(50) NOT NULL, " +
" KB CHAR(50) NOT NULL, " +
" SPUDDATE CHAR(50) NOT NULL, " +
" TOTALDEPTH CHAR(50) NOT NULL, " +
" LICENSENO CHAR(50) NOT NULL, " +
" DRILLINGENDDATE CHAR(50) NOT NULL, " +
" NOTES CHAR(150) NOT NULL, " +
" EASTING CHAR(50) NOT NULL, " +
" NORTHING CHAR(50) NOT NULL, " +
" COORDINATESYSTEM CHAR(50) NOT NULL)";
stmt.executeUpdate(sql);
...//other tables sql and stmt.executeUpdate(sql)
stmt.close();
c.commit();
here is my insert query which is working. WellInfo wi as parameter
Connection c = null;
Statement stmt = null;
try {
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:wellec.db");
c.setAutoCommit(false);
System.out.println("Opened database successfully");
stmt = c.createStatement();
String sql = "INSERT INTO WELLINFO " +
"(ID, WELLNAME, WELLSTATUS , MEASUREMENT, ISLOGADD , GL, KB, SPUDDATE, TOTALDEPTH, " +
"LICENSENO , DRILLINGENDDATE, NOTES, EASTING, NORTHING, COORDINATESYSTEM) " +
"VALUES (NULL,'" + wi.wellname + "'," + wi.wellstatus + "," + wi.measurement + "," +
"" + wi.islogadd +",'" + wi.gl + "','" + wi.kb + "','" + wi.spuddate + "'," +
"'" + wi.totaldepth + "','" + wi.licenseno + "','" + wi.drillingenddate + "', " +
"'" + wi.notes + "','" + wi.easting + "','" + wi.northing + "','" + wi.coordinatesystem + "');";
stmt.executeUpdate(sql);
stmt.close();
c.commit();
} catch ( Exception e ) {
System.err.println( e.getClass().getName() + ": " + e.getMessage() );
System.exit(0);
}
System.out.println("Records created successfully");
return 0;
here is my select
Connection c = null;
Statement stmt = null;
WellInfo[] wi = new WellInfo[60000];
WellInfo[] wi2 = new WellInfo[0];
int i = 0;
try {
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:wellec.db");
//c.setAutoCommit(false);
System.out.println("Opened database successfully");
stmt = c.createStatement();
ResultSet rs = stmt.executeQuery("select * from WELLINFO");
//c.commit();
//if(rs.getRow() > 0)
while ( rs.next() ) { //HERE IS THE PROBLEM
wi[i].wellID = rs.getInt("ID");
i++;
}
wi2 = new WellInfo[i];
for(int j = 0; j < i - 1; j++){
wi2[j] = wi[j];
}
rs.close();
stmt.close();
return wi2;
} catch ( Exception e ) {
System.err.println( e.getClass().getName() + ": " + e.getMessage() );
System.exit(0);
}
System.out.println("Operation done successfully");
return wi2;
Sorry not specify the problem. Here it is:
SELECT QUERY problem when i call rs.next(), i got the error java.lang.NullPointerException.
wi[i] is null => you can't call wi[i].wellID before you instantiate wi[i], you should do something like
wi[i] = new WellInfo() then call wi[i].wellID
I am trying to insert data into a SQLite database from a blackberry. When I call the screen I also call a method to create the database:
boolean sdCardPresent = false;
public static Database sqliteDB;
URI uri;
public void createdatabase()
{
try{
Enumeration e = FileSystemRegistry.listRoots();
root = (String)e.nextElement();
Dialog.inform(root);
if(root.equalsIgnoreCase("sdcard/"))
{
sdCardPresent = true;
}
if(!sdCardPresent)
{
Dialog.inform("O seu dispositivo nao suporta este compartimento sem cartao de memoria, verifique se existe um SD card no seu dispositivo.");
UiApplication.getUiApplication().pushScreen(new Tab_Main());
}else{
uri = URI.create(
"file:///SDCard/Databases/MBA.db");
sqliteDB = DatabaseFactory.openOrCreate(uri);
sqliteDB = DatabaseFactory.open(uri);
Statement st = sqliteDB.createStatement("DROP TABLE IF EXISTS atms;CREATE TABLE atms " +
"( id INTEGER PRIMARY KEY AUTOINCREMENT ," +
" localizacao TEXT, " +
" mapa TEXT ," +
" foto1 TEXT ," +
" foto2 TEXT," +
" zona TEXT);" +
"" +
"DROP TABLE IF EXISTS balcoes;CREATE TABLE balcoes " +
"( id INTEGER PRIMARY KEY AUTOINCREMENT ," +
" localizacao TEXT, " +
" mapa TEXT ," +
" foto1 TEXT ," +
" foto2 TEXT," +
" zona TEXT);" +
"" +
"DROP TABLE IF EXISTS contactos;CREATE TABLE contactos " +
"( id INTEGER PRIMARY KEY AUTOINCREMENT ," +
" nome TEXT, " +
" numero_conta INTEGER);") ;
st.prepare();
st.execute();
st.close();
sqliteDB.close();
Dialog.inform("Status: Database was successfully created.");
//}
} catch (Exception e){
System.out.println(e.getMessage());
Dialog.inform("\n "+e);
//UiApplication.getUiApplication().popScreen(Screen);
}
}
After that I use some Editfields and other components to get the values. I call the method to insert the parameters and send the query:
public void insert_update(String query) {
try {
sqliteDB = DatabaseFactory.openOrCreate(uri);
Statement st = sqliteDB.createStatement(query);
//Statement statement = _db.createStatement(query);
st.prepare();
st.execute();
st.close();
Dialog.inform("Adicionado com sucesso!!!");
}
catch ( Exception e ) {
Dialog.inform(e+"");
}
}
For example when I call it with the query = "insert into contactos values (null,"a","1"); I get an exception. SQL logic error or missing database.
Try dropping the quotes around the third column value.
INSERT INTO contactos VALUES (null,"a", 1);
It's defined as an INTEGER.
numero_conta INTEGER
EDIT :
System.out.println(uri); // check if null, or different
if (uri == null) {
uri = URI.create(
"file:///SDCard/Databases/MBA.db");
}
sqliteDB = DatabaseFactory.openOrCreate(uri);
sqliteDB = DatabaseFactory.open(uri); // open again
Statement st = sqliteDB.createStatement(query);
When I am trying to execute this sql statement, I am getting exception as-
java.sql.SQLException: ORA-06550: line 1, column 429:
PLS-00103: Encountered the symbol "/" The symbol "/" was ignored.
This is the below sql String that I am executing- Is there anything wrong with this sql? It will check whether table is there or not, if it is there then it will not create a table and if it is not there, then it will create a table.
public static final String CREATE1 = "DECLARE " +
"t_count INTEGER; " +
"v_sql VARCHAR2(1000) := 'create table " +DATABASE_TABLE + " ( " +
"(ID number(10,0), " +
"CGUID VARCHAR(255), " +
"PGUID VARCHAR(255), " +
"SGUID VARCHAR(255), " +
"USERID VARCHAR(255), " +
"ULOC VARCHAR(255), " +
"SLOC VARCHAR(255), " +
"PLOC VARCHAR(255), " +
"ALOC VARCHAR(255), " +
"SITEID VARCHAR(255), " +
"PRIMARY KEY ( ID ))'; " +
"BEGIN " +
"SELECT COUNT(*) " +
"INTO t_count " +
"FROM user_tables " +
"WHERE table_name = '" +DATABASE_TABLE + "'; " +
"IF t_count = 0 THEN " +
"EXECUTE IMMEDIATE v_sql; " +
"END IF; " +
"END; ";
It is getting printed on the console as-
DECLARE t_count INTEGER; v_sql VARCHAR2(1000) := 'create table LnPData((ID number(10,0), CGUID VARCHAR(255), PGUID VARCHAR(255), SGUID VARCHAR(255), USERID VARCHAR(255), ULOC VARCHAR(255), SLOC VARCHAR(255), PLOC VARCHAR(255), ALOC VARCHAR(255), SITEID VARCHAR(255), PRIMARY KEY ( ID ))'; BEGIN SELECT COUNT(*) INTO t_count FROM user_tables WHERE table_name = 'LnPData'; IF t_count = 0 THEN EXECUTE IMMEDIATE v_sql; END IF; END;
Remove ';' after your END IF statement and run it again.
I get the following MySQL exception:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'book.call_Number' in 'field list'.
What does that mean and how can I solve it?
Here is the code responsible for this exception:
public void actionPerformed(ActionEvent e) {
list.clearSelection();
String selectString = " ";
String afName = auth_fName.getText();
String aMI = auth_MI.getText();
String alName = auth_lName.getText();
String tField = titleField.getText();
String sField = subjectField.getText();
try {
Connection conn = Database.getConnection();
Statement s = conn.createStatement();
if (!afName.equals("") && (!aMI.equals("")) && (!alName.equals("")) && (!tField.equals("")) && (!sField.equals(""))) {
selectString = "SELECT a.call_Number as callNbr "
+ "FROM book a "
+ "FULL JOIN transaction b "
+ "ON a.call_Number=b.call_Number";
}
s = conn.createStatement();
System.out.println(selectString);
ResultSet rs = s.executeQuery(selectString);
while (rs.next()) {
String call_Num = rs.getString("call_Number");
String title = rs.getString("title");
String auth_lName = rs.getString("auth_lName");
String auth_MI = rs.getString ("auth_MI");
String auth_fName = rs.getString("auth_fName");
String availability = rs.getString("availability");
view = new View(call_Num, title, auth_lName, auth_MI, auth_fName, availability);
vList.add(view);
System.out.println(view);
}
rs.close();
s.close();
conn.close();
list.setListData(vList.toArray());
} catch (Exception ex) {
ex.printStackTrace();
}
}
Here is the DDL and content:
s.executeUpdate (
"CREATE TABLE book ("
+ "call_Number CHAR(10),"
+ "PRIMARY KEY (call_Number),"
+ "auth_fName CHAR(30)NOT NULL, auth_MI CHAR(2),"
+ "auth_lName CHAR(50)NOT NULL, title CHAR(100) NOT NULL,"
+ "subject CHAR(30) NOT NULL)");
count = s.executeUpdate (
"INSERT INTO book"
+ " VALUES"
+ "('MY.111.000', 'Mark', 'M','Bradshaw','Mystery Under the Sun','mystery'),"
+ "('MY.111.001', 'Mark','','Twain','The Adventures of Huckleberry Finn','mystery'),"
+ "('SF.111.002', 'Kito', 'M','Bradford','Mr. Roboto','science fiction'),"
+ "('SF.111.003', 'Eric','','Laslow','Science Fiction - Can It Happen?','science fiction'),"
+ "('AV.111.004', 'Rashad','','Cheeks','Fire Under the Bridge','adventure'),"
+ "('AV.111.005', 'Samantha','A','Appleby','The Open Sea','adventure'),"
+ "('CO.111.006', 'Lindsey', '','Butterby','What? We cant spend anymore!?','comedy'),"
+ "('CO.111.007', 'Judy', 'S','Yates','So this is life?','comedy'),"
+ "('IN.111.008', 'Elizabeth', 'J','Lee','Mystery Under the Sun','international'),"
+ "('IN.111.009', 'Gabriella', 'M','Rodriguez','Love in Brazil','international')");
*******t_action table***************************
//create transaction table
s.executeUpdate (
"CREATE TABLE t_action ("
+ "patron_ID CHAR(10) NOT NULL,"
+ "call_Number CHAR(10) NOT NULL, check_Out_Date DATE NOT NULL, check_In_Date DATE NOT NULL,"
+ "PRIMARY KEY (patron_ID, call_Number),"
+ "avail CHAR(15), total_Charge FLOAT)");
count3 = s.executeUpdate (
"INSERT INTO t_action"
+ " VALUES"
+ "('P222200000','MY.111.000','2011-03-08','2011-03-15','AVAILABLE',5.00),"
+ "('P222200001','MY.111.001','2011-03-31','2011-04-6','DUE 2011-04-6',5.00),"
+ "('P222200002','SF.111.002','2011-03-30','2011-04-5','DUE 2011-04-5',5.00),"
+ "('P222200003','SF.111.003','2011-03-29','2011-04-4','DUE 2011-04-4',5.00),"
+ "('P222200004','AV.111.004','2011-03-28','2011-04-3','DUE 2011-04-3',5.00),"
+ "('P222200005','AV.111.005','2011-03-27','2011-04-2','DUE 2011-04-2',5.00),"
+ "('P222200006','CO.111.006','2011-03-26','2011-04-1','DUE 2011-04-1',5.00),"
+ "('P222200007','CO.111.007','2011-01-06','2011-01-12','AVAILABLE',5.00),"
+ "('P222200008','IN.111.008','2011-02-06','2011-02-12','AVAILABLE',5.00),"
+ "('P222200009','IN.111.009','2011-03-06','2011-03-12','AVAILABLE',5.00)");
Use a <column> as predicate like below:-
selectString = "SELECT a.call_Number as callNbr, ... "
+ "FROM book a"
+ "FULL JOIN transaction b"
+ "ON a.call_Number=b.call_Number";
And then change the code to look for callNbr :-
String call_Num = rs.getString("callNbr");
HTH.
Change your query to this:
selectString = "SELECT a.call_Number "
+ "FROM book a "
+ "INNER JOIN transaction b "
+ "ON a.call_Number=b.call_Number";
MySQL does not support FULL OUTER JOIN. If you really need the effect of that - you'll need 2 selects with a UNION. Although from looks of it - does not seem like that would be necessary.