Question

I have created a database for my app with 5 columns. Each column only consists of integers.

At first, the table is empty. Now, if I add the values {1, 2, 3} to the first column (column1), I would like it too look like this:

http://pastebin.com/ZiUfDVEV

But in reality, it looks like this:

http://pastebin.com/zff926Zh

That is, it has inserted unwanted zeros at places to which I didn’t add new values.

I have tried two different ways of inserting values into the database.

First way:

DBAdapter db = new DBAdapter(this);
int[] sdTest = new int[] {1,2,3};
storeIDs(db, sdTest);

public void storeIDs(DBAdapter db, int[] ids)
{
    db.open();
    long id;
    for(int i=0; i<ids.length; i++)
    {
        id = db.insertIDs(ids[i]);          
    }        
    db.close();
}

And this method from the DBAdapter class:

public long insertIDs(int sd)
{
    ContentValues initialValues = new ContentValues();
    initialValues.put(SD, sd);
    return db.insert(DATABASE_TABLE, null, initialValues);
}

(where SD is the column name of the first column.)

Second way:

DBAdapter db = new DBAdapter(this);
int[] sdTest2 = new int[] {1,2,3};
storeIDsExe(db, sdTest2);

public void storeIDsExe(DBAdapter db, int[] ids)
{
    db.open();
    for(int i=0; i<ids.length; i++)
    {
        db.insertIDsExe(ids[i]);            
    }        
    db.close();     
}

And this method from the DBAdapter class:

public void insertIDsExe(int sd)
{
    db.execSQL("INSERT INTO "
            + DATABASE_TABLE
            + " (column1)"
            + " VALUES ("+sd+");");
}

Both ways give the same result: unwanted zeros.

How to get rid of them?

edit:

The table is created like so:

private static final String DATABASE_CREATE =
    "CREATE TABLE IF NOT EXISTS "
    + DATABASE_TABLE
    + " (column1 int, column2 int, column3 int, column4 int, column5 int);";

Answer 1

Does your table define default values for the columns? Columns should have attribute DEFAULT NULL :

EDIT

I have just tested it, in-memory sqlite db with Firefox SQLiteManager. It works.

CREATE TABLE IF NOT EXISTS test (column1 int NULL DEFAULT NULL, 
   column2 int NULL DEFAULT NULL, 
   column3 int NULL DEFAULT NULL, 
   column4 int NULL DEFAULT NULL, 
   column5 int NULL DEFAULT NULL);

and then

INSERT INTO test(column1) VALUES (4);