topic Unity Catalog external table: Delta Lake table comment in Data Governance

Unity Catalog external table: Delta Lake table comment

JonLaRose — Thu, 29 Feb 2024 16:43:43 GMT

Hi there,

When creating an external table in Unity Catalog using an existing Delta Lake table with a comment on the table itself, the comment isn't imported to the `Comment` key's value in the Unity Catalog table.

Could you explain why?

Re: Unity Catalog external table: Delta Lake table comment

Vidhi_Khaitan — Thu, 15 May 2025 05:03:46 GMT

Hi team,

Have you tried using SQL command to update the column comment?
ALTER TABLE <table_name> ALTER COLUMN <column_name> COMMENT '<comment_text>';

I believe this should resolve the issue