Daily DAX : Day 430 INFO.HIERARCHYSTORAGES

INFO.HIERARCHYSTORAGES DAX Function

Description

INFO.HIERARCHYSTORAGES() is a tabular DAX function in Power BI (and Analysis Services) that returns metadata about the storage details of hierarchies in the semantic model.

It corresponds to the TMSCHEMA_HIERARCHY_STORAGES Dynamic Management View (DMV), providing administrative insights into how hierarchy data is stored internally.

This function returns a table with columns containing information such as hierarchy IDs, storage modes, and related properties.

Syntax

INFO.HIERARCHYSTORAGES()

No parameters. It simply returns a table of hierarchy storage metadata.

Use Cases

  • Model Documentation and Analysis: Query the structure and storage of hierarchies directly within Power BI using DAX Query View.
  • Advanced Model Inspection: Useful for developers and administrators to understand internal storage configurations, optimize models, or troubleshoot hierarchy-related issues.
  • Self-Documenting Models: Combine with other INFO functions to create calculated tables that document the model's hierarchies.
  • Alternative to External Tools: Previously, this information required tools like DAX Studio or Tabular Editor to query DMVs; now accessible natively in Power BI DAX queries.

Example Usage

In Power BI's DAX Query View:

EVALUATE INFO.HIERARCHYSTORAGES()

This will return a table listing all hierarchy storage details in the current model.

Note: INFO functions like this are primarily for queries and metadata exploration, not for regular measures or calculated columns.

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