卡桑德拉CQL v3.0& amp;复合类型 [英] Cassandra CQL v3.0 & Composite Types

问题描述

我正在浏览 CQLv3.0

如果我的比较器或 key_validation 是 ascii ， ascii ， int ?

在< select表达式> 上也没有提及在select或在更新中也指定复合列和行的方式<主/复合键名称>

期待一些帮助

解决方案

CQL 3负责为您管理实际的复合类型和值.CQL 3行不一定与基础Cassandra行(存储引擎行")相同.组合值被抽象到单独的列中.

位于 http://www.datastax.com的示例/dev/blog/schema-in-cassandra-1-1 可能有助于理解转换.

I was going through the documentation of CQLv3.0

Should we specify composite keys across updates and selects like 'a:b:1' incase my comparator or key_validation is ascii, ascii, int?

There is no mention on <select expression> in select or way to specify composite columns and rows in update too <primary/composite key name>

Expecting some help over it

解决方案

CQL 3 takes care of managing the actual composite types and values for you. CQL 3 rows are not necessarily the same as the underlying Cassandra rows ("storage engine rows"). The composite values are abstracted into separate columns.

The example at http://www.datastax.com/dev/blog/schema-in-cassandra-1-1 may help in understanding the transformation.

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