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问题描述

配置单元是否有数据字典?我试图获取蜂巢中的表的列名称.类似于oracle查询,除了describe命令:

Does hive have a data dictionary? I am trying to fetch the column names of tables in hive.Similar to oracle query other than describe command:

SELECT COLUMN_NAME,DATA_TYPE FROM USER_TAB_COLUMNS
WHERE TABLE_NAME = ? ORDER BY COLUMN_ID;

推荐答案

Hive使用外部关系数据库作为其元商店.您可以使用metastore API(例如MySQL)直接查询已配置的metastore.更高级别的组件是 HCatalog ,该组件提供了用于访问和操作元存储库的API.

Hive uses an external relational database as its metastore. You can query the configured metastore directly, using the metastore API (eg. MySQL). A higher level component is HCatalog, which offers an API to access and manipulate the metastore.

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09-21 10:25