test code

//I use a ListActivityy for easy testing
public class TestContextMenu extends ListActivity {

    private static final String DATABASE_NAME = "reg_name.db";
    private static final int DATABASE_VERSION = 1;
    private SQLiteDatabase mDb;// our database on which we'll make the querys

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        DatabaseHelper dbh = new DatabaseHelper(this, DATABASE_NAME, null,
                DATABASE_VERSION);
        mDb = dbh.getWritableDatabase();
        // I only get the id, type, date and status columns
        String[] columns = { TabRegistry._ID, TabRegistry.TYPE,
                TabRegistry.DATE, TabRegistry.STATUS };
        Cursor cursor = mDb.query(TabRegistry.TABLE_NAME, columns, null, null,
                null, null, null);
        setListAdapter(new RegistryAdapter(this, cursor));
        registerForContextMenu(getListView());
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item
                .getMenuInfo();
        long rowId = info.id;
        // see which context option was selected
        switch (item.getItemId()) {
        case 1000:
            // I assumed you only want the NUMBER column so I query for just this
            // column
            String[] columnsForResults = { TabRegistry.NUMBER };
            // We have an id so use it so we only get only that row
            String selection = TabRegistry._ID + "= ?";
            // the ? will be replaced with the actual value in the query
            String[] selectionArgs = { Long.toString(rowId) };
            Cursor results = mDb.query(TabRegistry.TABLE_NAME,
                    columnsForResults, selection, selectionArgs, null, null,
                    null);
            // Build the results of the query
            results.moveToFirst();
            String toShow = "For the row with the id: "
                    + rowId
                    + " the NUMBER column is: "
                    + results.getString(results
                            .getColumnIndex(TabRegistry.NUMBER)) + "!";
            Toast.makeText(this, toShow, Toast.LENGTH_LONG).show();
            break;
        case 2000:
            Toast.makeText(this,
                    "You pressed the ContextMenu that does nothing!",
                    Toast.LENGTH_SHORT).show();
            break;
        }
        return super.onContextItemSelected(item);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        menu.add(Menu.NONE, 1000, Menu.NONE, "See details"); //see the details
        menu.add(Menu.NONE, 2000, Menu.NONE, "See nothing"); // does nothing
    }

    private class DatabaseHelper extends SQLiteOpenHelper {

        public DatabaseHelper(Context context, String name,
                CursorFactory factory, int version) {
            super(context, name, factory, version);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            // you don't have to use the format method, just append directly the
            // table/column names to the sql string
            String sql = "CREATE TABLE " + TabRegistry.TABLE_NAME + " ("
                    + TabRegistry._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
                    + TabRegistry.TYPE + " TEXT, " + TabRegistry.DATE
                    + " INTEGER, " + TabRegistry.STATUS + " TEXT, "
                    + TabRegistry.NUMBER + "  TEXT, " + TabRegistry.MESSAGE
                    + " TEXT, " + TabRegistry.OTHER + " TEXT);";
            db.execSQL(sql);
            // insert some values in the database(I just started at 1 so the id
            // and Number column match , to easy test the code)
            for (int i = 1; i < 30; i++) {
                ContentValues cv = new ContentValues();
                cv.put(TabRegistry.DATE, 1000 + i);
                cv.put(TabRegistry.MESSAGE, "Message no." + i);
                cv.put(TabRegistry.NUMBER, "Number no." + i); // this is the number!
                cv.put(TabRegistry.OTHER, "Other no." + i);
                cv.put(TabRegistry.STATUS, "Status no." + i);
                cv.put(TabRegistry.TYPE, "Type no." + i);
                db.insert(TabRegistry.TABLE_NAME, null, cv);
            }
        }

        @Override
        public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {
            // just for the interface in this example
        }

    }

    /**
     * I don't know what is your TabRegistry class so I use a simple class that
     * will hold those fields for the database (It also implements BaseColumns
     * so you have the _ID column)
     */
    class TabRegistry implements BaseColumns {
        public static final String TABLE_NAME = " table_name";
        public static final String TYPE = "col_type";
        public static final String DATE = "col_date";
        public static final String STATUS = "col_status";
        public static final String NUMBER = "col_number";
        public static final String MESSAGE = "col_message";
        public static final String OTHER = "col_other";
    }

    class RegistryAdapter extends CursorAdapter {

        public RegistryAdapter(Context context, Cursor c) {
            super(context, c);
        }

        @Override
        public void bindView(View view, Context context, Cursor cursor) {
            ((TextView) view.findViewById(R.id.tipo)).setText(cursor
                    .getString(cursor.getColumnIndex(TabRegistry.TYPE)));
            ((TextView) view.findViewById(R.id.data)).setText(cursor
                    .getString(cursor.getColumnIndex(TabRegistry.DATE)));
            ((TextView) view.findViewById(R.id.stato)).setText(cursor
                    .getString(cursor.getColumnIndex(TabRegistry.STATUS)));
        }

        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            return LayoutInflater.from(context).inflate(R.layout.registryvista,
                    null);
        }

    }

}

//and the xml layout for the custom adapter row
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tipo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/data"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/stato"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>