Add a way of replacing a single partition within a table

[jenkoian]

Feature description

As far as I can tell the replace write_disposition only supports replacing an entire table, I would like to be able to replace a single partition within a table.

I can do this with a merge disposition with a merge key, but it does a lot more than I want/need. It creates temp tables and stages data and all that stuff, when I simply want to just delete and re-insert data, I am aware this means there is a non-zero period of time the data is not available.

Are you a dlt user?

Yes, I'm already a dlt user.

Use case

I can use the merge write_disposition but it does a bunch of stuff I don't really need and can be quite slow and expensive (when running on Snowflake anyways). I looked at using upsert but it doesn't handle the case of existing entries being deleted if they no longer exist in the source (afaict).

Proposed solution

Example:

Event
id
type
match_id

id	type	match_id
1	pass	123
2	shot	123
3	pass	456

Replace everything in Event with the match_id 123 would delete events 1 and 2 and re-add them, but event with id 3 would remain untouched.

Related issues

I think this is similar? #1094