Remove deprecated CREATE TABLE with dummy column on the existing location in Delta Lake connector

[marcinsbd]

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# Delta Lake
* {{breaking}} Remove support for creating tables with dummy columns on the existing location. Use `register_table` procedure instead. ({issue}`17016`)

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[Thelin90]

@marcinsbd

May I ask why you want to delete this?

We use this heavily to create tables written by spark, delta-rs.

It will create a lot of pain to always have to align schema first in galaxy before doing a spark job. I am sure a lot of people must face this issue?

I assume this is what should still enable you to register existing tables? Would still make us have to do some major refactor but at least this does what we do with create table from existing location?

https://trino.io/docs/current/connector/delta-lake.html#register-table

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[ebyhr]

Please rebase on master to resolve conflicts.

[mosabua]

Does that mean that create table with external location is not remove completely in favour of the register table procedure? And this was the last part of that removal? @marcinsbd @ebyhr

[ebyhr]

@Thelin90 Since the specified location holds the table definitions, passing dummy columns doesn't make sense. We removed the feature to reduce the maintenance cost.

@mosabua Yes, we deprecated delta.legacy-create-table-with-existing-location.enabled few month ago and this PR removed the feature completely.

[mosabua]

Cool .. thanks for clarifying .. definitely needs to be a breaking change entry then..