presto-elasticsearch/src/main/java/io/prestosql/elasticsearch/decoders/ScoreColumnDecoder.java/ScoreColumnDecoder/decode
class ScoreColumnDecoder:    @Override
    public void decode(SearchHit hit, Supplier<Object> getter, BlockBuilder output)
    {
        REAL.writeLong(output, Float.floatToRawIntBits(hit.getScore()));
    }