Cassandra：无法使用非主键更新行（即使我创建了索引。）

Question

目前收到此错误消息：

错误请求：预期密钥“KEY”将出现在“UserGameAnswers”的 WHERE 子句中

cqlsh:godofsports> UPDATE UserGameAnswers SET 'status' = 'thing' WHERE 'event_question_id' = '7';
Bad Request: Expected key 'KEY' to be present in WHERE clause for 'UserGameAnswers'

鉴于我有一个针对此列键的索引（见下文）并且 this should be allowed 我做错了什么？

cqlsh:godofsports> DESCRIBE COLUMNFAMILY UserGameAnswers;

CREATE TABLE UserGameAnswers (
  KEY text PRIMARY KEY,
  event_question_id text
) WITH
  comment='' AND
  comparator=ascii AND
  read_repair_chance=0.100000 AND
  gc_grace_seconds=864000 AND
  default_validation=text AND
  min_compaction_threshold=4 AND
  max_compaction_threshold=32 AND
  replicate_on_write='true' AND
  compaction_strategy_class='SizeTieredCompactionStrategy' AND
  compression_parameters:sstable_compression='SnappyCompressor';

CREATE INDEX event_question_id_idx ON UserGameAnswers (event_question_id);

我需要先进行查询以获取实际的 KEY 吗？ :(

Answer 1

是的 - 您需要确定密钥并针对该密钥编写更新。