Oracle教程 2023-02-23

Oracle 视图 ALL_HIER_LEVEL_ID_ATTRS 官方解释，作用，如何使用详细说明

ALL_HIER_LEVEL_ID_ATTRS视图是Oracle维度中描述除维度编号及名称外扩展性更广的维度属性。这个视图显示了维度中每一级维度的特定属性，比如是否支持全局唯一性，是否允许为空，是否是有序的，是否可见等。

使用方法：

1.首先，确保用户有访问ALL_HIER_LEVEL_ID_ATTRS的权限；

2.使用查询语句检索维度扩展描述信息，比如：

SELECT *
FROM all_hier_level_id_attrs
WHERE hierarchy_name = ‘product_hier’;

该语句将返回维度中各个级别的属性信息。

ALL_HIER_LEVEL_ID_ATTRS describes the attributes that uniquely identify members of the levels of the hierarchies accessible to the current user.

Related Views

DBA_HIER_LEVEL_ID_ATTRS describes the attributes that uniquely identify members of the levels of all hierarchies in the database.
USER_HIER_LEVEL_ID_ATTRS describes the attributes that uniquely identify members of the levels of the hierarchies owned by the current user. This view does not display the OWNER column.

Column	Datatype	NULL	Description
`OWNER`	`VARCHAR2(128)`	`NOT NULL`	Owner of the hierarchy
`HIER_NAME`	`VARCHAR2(128)`	`NOT NULL`	Name of the hierarchy
`LEVEL_NAME`	`VARCHAR2(128)`	`NOT NULL`	Name of hierarchy level
`ATTRIBUTE_NAME`	`VARCHAR2(128)`	`NOT NULL`	Name of the unique identifier attribute
`ORDER_NUM`	`NUMBER`	`NOT NULL`	Order of the level in the list of unique identifier attributes for the level
`ORIGIN_CON_ID`	`NUMBER`		The ID of the container where the data originates. Possible values include: `0`: This value is used for rows in non-CDBs. This value is not used for CDBs. n: This value is used for rows containing data that originate in the container with container ID n (n = 1 if the row originates in root).