title: rawQuery return always return false
body: <p>I am trying to iterate on my database records. but for some reason it always return an empty cursor.
  If I pull out from the emulator the database file file the 'File explorer tab' I can see the table and the data in it.</p>
  
  <p>here is my code: </p>
  
  <pre><code>Cursor result = db.getReadableDatabase().rawQuery(
                      "SELECT _ID, STUDENT_NAME, STUDENT_GRADE, STUDENT_ADDRESS "
                              + "FROM students", null);
              while (!result.moveToNext())
              {
                  int id = result.getInt(0);
                  String studentName = result.getString(1);
                  String studentGrade = result.getString(2);
                  String studentAddress = result.getString(3);
                  Log.d("Sqlitedemo", "ID=" + id + ", STUDENT_NAME=" + studentName +", STUDENT_GRADE="+studentGrade+", STUDENT_ADDRESS="+studentAddress);
              }
              result.close();
  </code></pre>
  
  <p>now while (!result.moveToNext()) always return false.</p>
  
  <p>this is my DatabaseHelper class:</p>
  
  <pre><code>public class DatabaseHelper extends SQLiteOpenHelper
  {
      private static final String DATABASE_NAME   = "db";
      static final String         STUDENT_NAME    = " STUDENT_NAME";
      static final String         STUDENT_GRADE   = "STUDENT_GRADE";
      static final String         STUDENT_ADDRESS = "STUDENT_ADDRESS";
  
      public DatabaseHelper(Context context)
      {
          super(context, DATABASE_NAME, null, 1);
      }
  
      @Override
      public void onCreate(SQLiteDatabase db)
      {
          // creating the table
          db
                  .execSQL("CREATE TABLE students (_id INTEGER PRIMARY KEY AUTOINCREMENT, STUDENT_NAME TEXT, STUDENT_GRADE TEXT,  STUDENT_ADDRESS TEXT);");
  
          ContentValues cv = new ContentValues();
  
          cv.put(STUDENT_NAME, "Roi");
          cv.put(STUDENT_GRADE, "85");
          cv.put(STUDENT_ADDRESS, "Tel aviv");
  
          db.insert("students", STUDENT_NAME, cv);
  
      }
  
      @Override
      public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
      {
          // TODO Auto-generated method stub
  
      }
  
  }
  </code></pre>
  
  <p>any idea?</p>
  
  <p>Thanks,
  ray.</p>