"Invalid operator IN for PRIMARY KEY" 使用 IN 子句更新多个集群列时

Question

CREATE TABLE IF NOT EXISTS my_counters (
  partition_key text, 
  clustering_key text,
  count counter,
  PRIMARY KEY ((partition_key), clustering_key)
);

我现在想在两个集群键下递增计数器。根据更新规范，这应该是可能的： http://docs.datastax.com/en/cql/3.1/cql/cql_reference/update_r.html

但我收到 "Invalid operator IN for PRIMARY KEY..." 错误

UPDATE my_counters SET count = count + 1 WHERE partition_key = ? AND clustering_key IN (?, ?)

这是对计数器的特定限制吗？我知道我可以为每个查询使用一个聚类键来编写一个计数器批处理，但我宁愿不这样做。

Answer 1

来自http://docs.datastax.com/en/cql/3.3/cql/cql_reference/update_r.html 仅分区键的最后一列支持 IN 关系。

如果不指定完整的 PRIMARY KEY（分区键 + 集群键）也无法进行更新

create table spending_by_country_state (country text,state text,amount int, primary key ((country,state)));

select * from spending_by_country_state;

 country | state     | amount
---------+-----------+--------
   India | Karnataka |  20000
   India |    Kerala |  10000

cqlsh:test> update spending_by_country_state set amount = 10001 where country = 'India' and state in ('Karnataka','Kerala');
cqlsh:test> select * from spending_by_country_state;

 country | state     | amount
---------+-----------+--------
   India | Karnataka |  10001
   India |    Kerala |  10001

(2 rows)

"Invalid operator IN for PRIMARY KEY" 使用 IN 子句更新多个集群列时

"Invalid operator IN for PRIMARY KEY" when updating multiple clustering columns using IN clause

cql

cassandra

cql3