Table definition:

    CREATE TABLE hackernews_history
    (
        update_time DateTime DEFAULT now(),
        id UInt32,
        deleted UInt8,
        type Enum('story' = 1, 'comment' = 2, 'poll' = 3, 'pollopt' = 4, 'job' = 5),
        by LowCardinality(String),
        time DateTime,
        text String,
        dead UInt8,
        parent UInt32,
        poll UInt32,
        kids Array(UInt32),
        url String,
        score Int32,
        title String,
        parts Array(UInt32),
        descendants Int32
    )
    ENGINE = MergeTree(update_time) ORDER BY id;
    

    BATCH_SIZE=1000

    TWEAKS="--optimize_trivial_insert_select 0 --http_skip_not_found_url_for_globs 1 --http_make_head_request 0 --engine_url_skip_empty_files 1 --http_max_tries 10 --max_download_threads 1 --max_threads $BATCH_SIZE"

    rm -f maxitem.json
    wget --no-verbose https://hacker-news.firebaseio.com/v0/maxitem.json

    clickhouse-local --query "
        SELECT arrayStringConcat(groupArray(number), ',') FROM numbers(1, $(cat maxitem.json))
        GROUP BY number DIV ${BATCH_SIZE} ORDER BY any(number) DESC" |
    while read ITEMS
    do
        echo $ITEMS
        clickhouse-client $TWEAKS --query "
            INSERT INTO hackernews_history SELECT * FROM url('https://hacker-news.firebaseio.com/v0/item/{$ITEMS}.json')"
    done