@Override
    public Object getObject(final int columnIndex) throws SQLException {
        return mergeResultSet.getValue(columnIndex, Object.class);
    }
@Test
    void assertGetObjectWithDouble() throws SQLException {
        double result = 0.0;
        when(mergeResultSet.getValue(1, double.class)).thenReturn(result);
        assertThat(shardingSphereResultSet.getObject(1, double.class), is(result));
        when(mergeResultSet.getValue(1, Double.class)).thenReturn(result);
        assertThat(shardingSphereResultSet.getObject(1, Double.class), is(result));
    }