We Keep Coding

Java JDBC Derby Syntax Error

Hi I have a problem with my syntax in my java code. I have a tableview which gets its data from a SQL database. I have created 3 tables in the database book, customer, order. When I click a button I want to take the selected books and add them to the order table.
Here is the code from the main program (calling the method from db):
if(table.getSelectionModel().getSelectedItems().iterator().hasNext()) {
db.insertOrder(new Bestellung(customerid,table.getSelectionModel().getSelectedItems().iterator().next()));
The table book is fixed. Just the two other tables customer,order are dynamic.
The problem:
I create the values in the order table like this
String ct = "CREATE TABLE Order (" + "Order_Id integer generated always as identity, " + "CUSTOMER_ID BIGINT" + "ISBN, CHAR(13) " + "PRIMARY KEY(Order_Id))";
and so on...
I insert into order table like this. (Here is the syntax problem in the String i That's the position where the compiler says it doesn't work..)
String i = "INSERT INTO ORDER(CUSTOMER_ID,ISBN), VALUES(?,?)";
Connection conn = null;
PreparedStatement stmt = null;
try {
conn = DriverManager.getConnection(connString);
stmt = conn.prepareStatement(i);
conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
stmt.setLong(1, order.getCustomerId());
stmt.setString(2, order.getBuch().getISBN());
stmt.executeUpdate();
} catch (SQLException e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
finally {
try {
if (stmt != null)
stmt.close();
if (conn != null)
conn.close();
} catch (SQLException e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
}
and here is the syntax error which I got
Syntax error: Encountered "ORDER" at line 1, column 13.
So how do I have to correct my syntax in the string i? Does anyone have any ideas?

INSERT INTO ORDER(CUSTOMER_ID,ISBN), VALUES(?,?)
^
The comma is superfluous. Also, in your CREATE TABLE
... + "ISBN, CHAR(13) " + ...
^
This comma is also extraneous.

If you want to use reserved words/keywords as Table name, you should:
MySQL: use ' , like : select * from 'Order'
Oracle, PostgreSQL: use " , like : select * from "Order"
But it is bad practice, try to change your table name.
You have another Error that answered by #Jim Garrison.

Failed to create table with SQLite

I'm trying to create a table with a list of names in it. This outputs:
"Failed to create table_name"
It was working before, I'm using Netbeans IDE with SQLite 3.7.2. I've also tried executing statements on the database which works fine. But it won't work through the Java code below
class DatabaseHelper{
public void addToDb(String tbname, List<String> name){
try {
String url = "jdbc:sqlite:D:/names.db";
Class.forName("org.sqlite.JDBC");
try(Connection conn = DriverManager.getConnection(url);
Statement stmt = conn.createStatement();){
stmt.execute("CREATE TABLE IF NOT EXISTS " + tbname + "(id integer PRIMARY KEY AUTOINCREMENT,"
+ "name text NOT NULL)");
name.forEach((s) -> {
try{
stmt.execute("INSERT INTO " + tbname + "(name) VALUES('" + s + "')");
}catch(SQLException e){
e.printStackTrace();
}
});
System.out.println("Finished");
}catch(SQLException e){
e.printStackTrace();
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
EDIT : It does works, only takes to refresh it. No actual problems it seems

Try to create your table with a database name like this :
String query = "CREATE TABLE IF NOT EXISTS databasename." + tbname +
" (id integer PRIMARY KEY AUTOINCREMENT, name text NOT NULL)";
If your database already contain schema then create your table with schema name like this :
CREATE TABLE [IF NOT EXISTS] [schema_name].table_name (
so :
String query = "CREATE TABLE IF NOT EXISTS sch_name." + tbname +
" (id integer PRIMARY KEY AUTOINCREMENT, name text NOT NULL)";
You can learn more here : SQLite Create Table
Ooops this is logic
This error is logic it return false all the time, if you try st.executeUpdate(q) and your query is success it will return 0 because CREATE TABLE does not return any thing for that you get negative result all the time, not like Insert or Update it return a result when you execute your statement, so i suggest to change your code to this :
boolean created;
try {
q = "CREATE TABLE ...";
Statement st = connection.createStatement();
//you can use
System.out.println(st.executeUpdate(q));
//or
System.out.println(st.execute(q));
created = true;
} catch (SQLException e) {
created = false;
}
//now you can check if your table is created or not
if(created){
System.out.println("Table created with sucess");
}else{
System.out.println("Faild to create table");
}
Hope this work with you.

if(stmt.execute("CREATE TABLE IF NOT EXISTS " + tbname + ";"+"CREATE TABLE "+ tbname + "(id integer PRIMARY KEY AUTOINCREMENT,"
+ "name text NOT NULL)"))
or can you give the exception that was raised

Sql Syntax error unknown field list but looking for wrong field?

So I created the following function to write to a database:
public static void updateBuyer(String ID, String name, Location latlong) {
float lat = latlong.latitude;
float lon = latlong.longitude;
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/testdatabase?user=testuser&password=testpassword");
conn = DriverManager.getConnection(connectionUrl, connectionUser,
connectionPassword);
stmt = conn.createStatement();
String sql = "UPDATE Buyer " + "SET latitude ="
+ Float.toString(lat) + " WHERE idBuyer in (" + ID + ")";
String sql2 = "UPDATE Buyer " + "SET longitude ="
+ Float.toString(lon) + " WHERE idBuyer in (" + ID + ")";
String sql3 = "UPDATE Buyer " + "SET Name =" + name
+ " WHERE idBuyer in (" + ID + ")";
stmt.executeUpdate(sql);
stmt.executeUpdate(sql2);
stmt.executeUpdate(sql3);
conn.close();
} catch (Exception e) {
System.err.println(e);
}
}
Lets say I passed the following parameters:
(12,craigs,location object)
Now when I run the function I get the following error:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'craigs' in 'field list'
12 is the ID i retrieved from the databases earlier,
craigs is the random name I am trying to insert, and
location object is just a set of coordinates (lat,long)
Which leads me to think that it is looking for a field called "craigs" in the table for some reason, but why would it do that?

The problem is that you've got SQL like this:
UDPATE Buyer SET Name = craigs WHERE idBuer in (Whatever)
That's trying to copy the value from a column named "craigs".
Now you could just add apostrophes - but don't. Instead, use parameterized SQL with a prepared statement. That way you'll avoid SQL injection attacks, your code will be simpler, and you'll avoid unnecessary string conversions which can cause problems, particularly with date values.
Additionally, you only need a single statement, which can update all three columns:
String sql = "UPDATE Buyer SET Name=?, latitude=?, longitude=? WHERE idBuyer=?";
try (PreparedStatement statement = conn.prepareStatement(sql)) {
statement.setString(1, name);
statement.setFloat(2, lat);
statement.setFloat(3, lon);
statement.setString(4, ID);
statement.executeUpdate();
}
(Note that I've assumed you're actually only trying to update a single buyer - it's not clear why you were using IN at all. Also note that I'm using a try-with-resources statement, which will automatically close the statement afterwards.)
Additionally, I would *strongly *advise you to avoid just catching Exception. Catch SQLException if you must - but you'd actually probably be better letting it just propagate up the call stack.

Insert data into HIVE over HADOOP

I am using hadoop-1.0.4 and hive-0.10.0 in redhat5. Service start successfully. I am able to create, drop, select table easily but I don't know how to insert data.
For example I have two text box and on button click I want to store data in table (userInfo). I have no clue how to store textbox vaue in userInfo(id,password).
private static String driverName = "org.apache.hadoop.hive.jdbc.HiveDriver";
try {
Class.forName(driverName);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.exit(1);
}
Connection con = DriverManager.getConnection("jdbc:hive://localhost:10000/enggheads","", "");
Statement stmt = con.createStatement();
String tableName = "testHiveDriverTable";
stmt.executeQuery("drop table " + tableName);
ResultSet res = stmt.executeQuery("create table " + tableName + " (key int, value string)");
// show tables
String sql = "show tables '" + tableName + "'";
System.out.println("Running: " + sql);
res = stmt.executeQuery(sql);
if (res.next()) {
System.out.println(res.getString(1));
}
It's Java, but I don't know how to insert two field value because Hive insertion is different than MySQL or other database syntax.

Create a dummy table in hive like below
create table dummy(dummy string) location '/path';
Above path will have a file which contains data X
Now run insert query from jdbc driver like below.
insert into table tblname select forntendvalue1,frontendvalue2 from dual;

Data does not get inserted into the table sometime

I have a table A. I insert data into table A through a user interface. Table A has an ID(primary key), which is generated using a sequence, and 16 other columns. One of the column is called cntrct_no.
When I try to insert data into the table through UI, it works fine the first time. I check the table A and all the data are there.
But when I try to insert the same data again without changing anything, it looks like the data is getting added to the table and I do not get any errors. But when I check table A, the data inserted the second time is not there.
If I try to insert the same data directly thorough SQL developer, the data gets inserted into the table.
The weird thing is if I just change the value of the cntrct_no in the UI and leave rest of the data same, the data gets inserted.
Can anyone please explain to me what could possibly cause this?
Not sure if this helps: stmt.executeUpdate(); returns 0 when the data is not inserted and a 1 when it's inserted.
public void writeToAudit(String contractNo, String tripNo,
String tripEffDate,
String tripDiscDate, String transpModeId, String userId,
String transType, AplLeg[] legs) {
final Session session = HibernateUtil.getSession();
Connection con = null;
con = session.connection();
PreparedStatement stmt = null;
PreparedStatement stmtSelId = null;
ResultSet rs = null;
long nextId = -1;
int i=0;
try {
for(i=0;i<legs.length;i++) {
String sqlNextId = "SELECT rpt_audit_transportation_seq.NEXTVAL as seqval FROM DUAL";
stmtSelId = con.prepareStatement(sqlNextId, ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
rs = stmtSelId.executeQuery();
rs.last();
final int rows = rs.getRow();
if (rows == 0){
nextId = -1;
}
rs.beforeFirst();
rs.next();
nextId = rs.getInt(1);
if(nextId==-1)
throw new SQLException("Cannot get next val from rpt_audit_transportation sequence.");
stmt = con.prepareStatement(WRITE_TO_AUDIT_DML);
stmt.setLong(1, nextId);
stmt.setString(2, userId.toUpperCase());
stmt.setString(3, transType);
stmt.setString(4, contractNo);
stmt.setString(5, tripNo);
stmt.setInt(6, Integer.parseInt(transpModeId));
stmt.setString(7, tripEffDate);
stmt.setString(8, tripDiscDate);
stmt.setLong(9, legs[i].getLegId().longValue());
int temp = stmt.executeUpdate();
con.commit();
}
stmt.close();
}
catch (Exception e) {
}
finally {
closeConnection(session, con, stmtSelId, rs);
}
}
THE SQL STATEMENT:
private static final String WRITE_TO_AUDIT_DML =
"INSERT INTO rpt_audit_transportation " +
"(audit_id, audit_date, audit_process, audit_userid, " +
"audit_trans_type, audit_route_no, audit_trip_no, " +
"audit_eff_dt, audit_disc_dt, audit_orig_facility_id, " +
"audit_dest_facility_id, audit_arvl_tm, audit_dprt_tm, " +
"audit_leg_seq_no, audit_freq_id, audit_trnsp_mode_id) " +
"(SELECT ?, " + // audit id
"SYSDATE, " +
"'TOPS_UI', " +
"?, " + // userId
"?, " +
"rte.cntrct_no, " +
"trp.trip_no, " +
"rte.cntrct_eff_dt, " +
"rte.cntrct_disc_dt, " +
"NVL(leg.orig_facility_id, trp.orig_fac_id), " +
"NVL(leg.dest_facility_id, trp.dest_fac_id), " +
"NVL(leg.arvl_tm, trp.arvl_tm), " +
"NVL(leg.dprt_tm, trp.dprt_tm), " +
"leg.leg_seq, " +
"trp.freq_id, " +
"rte.trnsp_mode_id " +
"FROM apl_contract rte, " +
"apl_trip trp, " +
"apl_leg leg " +
"WHERE rte.cntrct_no = ? " + // contract id
"AND trp.trip_no = ? " + // trip no
"AND rte.trnsp_mode_id = ? " + // transp mode id
"AND rte.cntrct_locked_ind = 'N' " +
"AND trp.trip_eff_dt = to_date(?,'MM/DD/YYYY') " + // trip eff date
"AND trp.trip_disc_dt = to_date(?,'MM/DD/YYYY') " + // trip disc date
"AND trp.cntrct_id = rte.cntrct_id " +
"AND leg.trip_id = trp.trip_id " +
"AND leg.leg_id = ?) ";

Looks like you're not inserting plain values, but a result of a select based on the parameters.
What you are using is an INSERT ... SELECT () clause, so if the SELECT part does not return any rows, the INSERT won't insert anything, and stmt.executeUpdate() will return 0. Find out why SELECT returns no rows.
This may be due some triggers saving stuff in other tables when you do the insert into rpt_audit_transportation, but it's just a guess.

The problem is that you have a catch that is swallowing your exceptions
catch (Exception e) {
}
That means that when the SQL statement throws an error, you're telling your code to catch the exception and ignore it. It is almost always an error to do that since, as you're discovering, it means that your code can fail to do what you expect with no way of letting you know that something failed. At a minimum, you would need to log the exception somewhere. In general, though, if you cannot fix whatever condition lead to the exception, you ought to re-raise the exception or simply not catch it in the first place.
My guess is that the second insert is violating some constraint defined on the table. But since your code is catching the exception and throwing it away, you're not being notified that there was a constraint violation nor is your code noting which constraint was violated.

When the cntrct_no is same you are getting an exception and you are supperessing that as told by #Justin Cave. This may be because you are having a unique constraint for that field and the DB throws an error and you are suppressing.
When cntrct_no is changed - obviously the constraint wont fail and for primary key since you are using the sequence it would have generated the next number and it happily gets inserted in the DB.
Don't ever suppress the exception. Do some thing in that block either rethrow as application specific exception or convert to error code and propagate that to the front end.