@Override
    public int getInt(final int columnIndex) throws SQLException {
        return (int) ResultSetUtils.convertValue(mergeResultSet.getValue(columnIndex, int.class), int.class);
    }
@Test
    void assertGetIntWithColumnLabel() throws SQLException {
        when(mergeResultSet.getValue(1, int.class)).thenReturn((short) 1);
        assertThat(shardingSphereResultSet.getInt("label"), is(1));
    }