expandableList problem

Question

I'm trying to build expandableList with SimpleCursorTreeAdapter but my list does not make groups, it repeats every child element as group element.

My datas are formed as KEY_ROWID ,KEY_NAME , KEY_EMAIL ,KEY_ILID ,KEY_KURUMID ,KEY_BOLGEID

---

my datas:

(db,"Asli", "asli@gmail.com", 1, 1, 1); 
(db,"Osman Can", "osman@gmail.com", 1, 1, 1); 
(db,"Abuzer Kadayif", "kadayif@gmail.com", 1, 2, 1); 

(db,"Emre", "emre@gmail.com", 1, 3, 2); 
(db,"Deniz", "deniz@gmail.com", 1, 4, 2); 

(db,"Simon Garfunkel", "simon@gmail.com", 1, 5, 0); 
(db,"Eric Clapton", "eric@gmail.com", 1, 6, 0); 
(db,"Neil Young", "neil@gmail.com", 1, 5, 0); 

---

And This is my code:

String sqlString = "SELECT * " + " FROM " + Items.DATABASE_TABLE;

        Cursor mCursor = db.rawQuery(sqlString, null);

        SimpleCursorTreeAdapter mAdapter = new SimpleCursorTreeAdapter(this,
                mCursor, R.layout.row, R.layout.exprow,
                //createGroupList(), 
                new String[] { Items.KEY_BOLGEID },
                new int[] { R.id.txtItem },
                R.layout.exprow, R.layout.exprow,
                new String[] { Items.KEY_EMAIL,Items.KEY_NAME }, new int[] { R.id.dscItem, R.id.manuItem }) {

            @Override
            protected Cursor getChildrenCursor(Cursor groupCursor) {

                String tempGroup = groupCursor.getString(groupCursor
                        .getColumnIndex(Items.KEY_BOLGEID));

                DbHelper dbh = new DbHelper(BrowseActivity.this);
                SQLiteDatabase db = dbh.getWritableDatabase();

                String sqlString = "SELECT " + Items.KEY_ROWID + ", "
                        + Items.KEY_EMAIL + ", " + Items.KEY_NAME + ", "
                        + Items.KEY_KURUMID + ", " + Items.KEY_BOLGEID + ", "
                        + Items.KEY_ILID + " FROM " + Items.DATABASE_TABLE
                        + " WHERE " + Items.KEY_BOLGEID + "= "  + tempGroup 
                        ;
                Cursor mCursor = db.rawQuery(sqlString, null);

                return mCursor;

            }


        };

        browseView.setAdapter(mAdapter);

    }

My result should be:

Group 1:
(db,"Asli", "asli@gmail.com", 1, 1, 1); 
(db,"Osman Can", "osman@gmail.com", 1, 1, 1); 
(db,"Abuzer Kadayif", "kadayif@gmail.com", 1, 2, 1); 
Group 2:        
(db,"Emre", "emre@gmail.com", 1, 3, 2); 
(db,"Deniz", "deniz@gmail.com", 1, 4, 2); 
Group 3:        
(db,"Simon Garfunkel", "simon@gmail.com", 1, 5, 0); 
(db,"Eric Clapton", "eric@gmail.com", 1, 6, 0); 
(db,"Neil Young", "neil@gmail.com", 1, 5, 0);

But it is 3 times group 1 2 times group 2 3 times group 0

And I tried to change sql of groupCursor, but it crashes.