@Override
    public Reader getCharacterStream(final int columnIndex) throws SQLException {
        throw new SQLFeatureNotSupportedException("getCharacterStream");
    }
@Test
    void assertGetCharacterStream() {
        LocalDataMergedResult actual = new LocalDataMergedResult(Collections.singletonList(new LocalDataQueryResultRow("value")));
        assertThrows(SQLFeatureNotSupportedException.class, () -> actual.getCharacterStream(1));
    }