Cassandra Upsert 不适用于每一列

Question

我正在尝试更新测试键空间和表中的记录。当我插入一条记录时，接受一个列值更改，而另一个不接受。 (注意:尽管没有错误消息，我也无法删除记录)
观察 middle_initial 是如何不更新的，而 title 是如何......什么给出的？
//前

cqlsh:my_keyspace> SELECT * FROM user;

 last_name | first_name | middle_initial | title
-----------+------------+----------------+-------
 Rodriguez |       Mary |              Q |  null
 Rodriquez |       Mary |              Q |     O
    Nguyen |       Bill |           null |   Mr.
    Nguyen |      Wanda |           null |  Mrs.

//命令

cqlsh:my_keyspace> UPDATE user SET middle_initial = 'F', title = 'U' WHERE last_name = 'Rodriquez' AND first_name = 'Mary';

//后

cqlsh:my_keyspace> SELECT * FROM user;

 last_name | first_name | middle_initial | title
-----------+------------+----------------+-------
 Rodriguez |       Mary |              Q |  null
 Rodriquez |       Mary |              Q |     U
    Nguyen |       Bill |           null |   Mr.
    Nguyen |      Wanda |           null |  Mrs.

//附加信息

CREATE KEYSPACE my_keyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '1'}  AND durable_writes = true;

CREATE TABLE my_keyspace.user (
    last_name text,
    first_name text,
    middle_initial text,
    title text,
    PRIMARY KEY (last_name, first_name)
) WITH CLUSTERING ORDER BY (first_name ASC)
    AND bloom_filter_fp_chance = 0.01
    AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
    AND comment = ''
    AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'}
    AND compression = {'chunk_length_in_kb': '64', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND crc_check_chance = 1.0
    AND dclocal_read_repair_chance = 0.1
    AND default_time_to_live = 0
    AND gc_grace_seconds = 864000
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair_chance = 0.0
    AND speculative_retry = '99PERCENTILE';

Answer 1

马尼什是对的。我的 middle_initial 时间戳设置为 future 日期 1623699999999999
要删除记录(这实际上是我的目标)，我做了:

cqlsh:my_keyspace> DELETE FROM user USING timestamp 1623699999999999 WHERE first_name = 'Mary' AND last_name = 'Rodriquez';