This is a no, you cannot manipulate a hubdb table in that way. Hubl for hubdb is used only for reading. The only two ways to update/add/delete hubdb tables are either by directly changing it or use the API.
If it matters to you, the hubdb interface is ment to be used by non-technical users (content editors), personally I do find it easy to grasp and work with and didn't have any experience of content editors having any difficulties (not anyone I explained it to at least). If you think about it anyone who has opened a spreadsheet should be familiar with hubdb interface and identify right away how it roughly works.
Hope my answer got you covered, would love to hear if you got any other thoughts about this! Cheers!
If my answer was helpful, please mark it as a solution.
This is a no, you cannot manipulate a hubdb table in that way. Hubl for hubdb is used only for reading. The only two ways to update/add/delete hubdb tables are either by directly changing it or use the API.
If it matters to you, the hubdb interface is ment to be used by non-technical users (content editors), personally I do find it easy to grasp and work with and didn't have any experience of content editors having any difficulties (not anyone I explained it to at least). If you think about it anyone who has opened a spreadsheet should be familiar with hubdb interface and identify right away how it roughly works.
Hope my answer got you covered, would love to hear if you got any other thoughts about this! Cheers!
If my answer was helpful, please mark it as a solution.
technically you could manipulate a HubDB via a custom module - but since this isn't recommended at all, a complete overkill solution and can get out of hand very easy and quickly - I won't write about it.
HubDB is - like @miljkovicmisa mentioned - designed to be as user-friendly as it can get. Provide only a few marketers with editing/publishing rights and call it a day.
A possible workaround for you could be a custom module with overrides.
I've written such a module for a customer who wanted to have a overrideable HubDB entries in the past. The differene to your desired need was, that the customer wanted to be able to display either the HubDB entry or something different.
Each HubDB value was wrapped in an if/unless statement which made my life not as easy as it seems