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HIERARCHIES Rowset

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The HIERARCHIES rowset contains information about the hierarchies available in a dimension. If the dimension does not contain a hierarchy or has just one hierarchy, the HIERARCHY_NAME column will contain a NULL and both the HIERARCHY_UNIQUE_NAME and HIERARCHY_CAPTION columns will contain the name of the dimension.

The default sort order is CATALOG_NAME, SCHEMA_NAME, CUBE_NAME, DIMENSION_UNIQUE_NAME, and HIERARCHY_NAME.

The rowset structure is described in the following table.

Column name

Type indicator

Description

CATALOG_NAME

DBTYPE_WSTR

Optional. The name of the catalog to which this hierarchy belongs. NULL if the provider does not support catalogs.

SCHEMA_NAME

DBTYPE_WSTR

Optional. The name of the schema to which this hierarchy belongs. NULL if the provider does not support schemas.

CUBE_NAME

DBTYPE_WSTR

Required. Name of the cube to which this hierarchy belongs.

DIMENSION_UNIQUE_NAME

DBTYPE_WSTR

Required. Unique name of the dimension to which this hierarchy belongs. For providers that generate unique names by qualification, each component of this name is delimited.

HIERARCHY_NAME

DBTYE_WSTR

Required. Name of the hierarchy. If the dimension does not contain a hierarchy or has just one hierarchy, this column contains a NULL.

HIERARCHY_UNIQUE_NAME

DBTYPE_WSTR

Required. Unique name of the hierarchy. This must be an unambiguous name. If the dimension does not contain a hierarchy or has just one hierarchy, this column will contain the name of the dimension. For providers that generate unique names by qualification, each component of this name is delimited.

HIERARCHY_GUID

DBTYPE_GUID

Optional. Hierarchy GUID. NULL if there is no GUID.

HIERARCHY_CAPTION

DBTYPE_WSTR

Required. A label or a caption associated with the hierarchy. Used primarily for display purposes. If a caption does not exist, HIERARCHY_NAME is returned. If the dimension does not contain a hierarchy or has just one hierarchy, this column will contain the name of the dimension.

DIMENSION_TYPE

DBTYPE_I2

Required. The type of the dimension to which this hierarchy belongs. Can be one of the following values:

  • MD_DIMTYPE_TIME, which indicates a Time dimension.

  • MD_DIMTYPE_MEASURE, which indicates a Measures dimension.

  • MD_DIMTYPE_OTHER, which indicates that the dimension is neither a Time dimension nor a Measures dimension.

  • MD_DIMTYPE_UNKNOWN, which indicates that the provider is unable to classify the dimension.

HIERARCHY_CARDINALITY

DBTYPE_UI4

Required. The number of members in the hierarchy. Because of the presence of multiple hierarchies, this number might not be the same as DIMENSION_CARDINALITY. This value can be an approximation of the real cardinality. Consumers should not assume that this value is accurate.

DEFAULT_MEMBER

DBTYPE_WSTR

Optional. The default member for this hierarchy. This is a unique name. Every hierarchy must have a default member.

ALL_MEMBER

DBTYPE_WSTR

Optional. The member at the highest level of rollup in the hierarchy. This can be different from DEFAULT_MEMBER.

DESCRIPTION

DBTYPE_WSTR

Optional. A human-readable description of the hierarchy. NULL if no description exists.

ANNOTATIONS

DBTYPE_WSTR

Optional. A string containing annotations added by analysts through their client applications. For more information about this feature, see The ANNOTATIONS Column.

STRUCTURE

DBTYPE_I2

Required. The type of hierarchy. Can be one of the following values:

  • MD_STRUCTURE_FULLYBALANCED

  • MD_STRUCTURE_RAGGEDBALANCED

  • MD_STRUCTURE_UNBALANCED

  • MD_STRUCTURE_NETWORK