include: option on add_index does nothing

The adapter seems to be able to derive included columns on an index during schema generation, but the add_index method "include:" option seems to do nothing. The adapter reports that it supports includes, but seems to only partially support it...

repro:

`class CreateSomeTable < ActiveRecord::Migration[8.0]
def change
create_table :some_table do |t|
t.varchar :field1, limit: 50
t.varchar :field2, limit: 50
t.varchar :field3, limit: 73

  t.timestamps
end
add_index :some_table, [ :field1, :field2], unique: true, include: :field3

end
end`

created a unique index on field1 and field2, but does not include field3

'INDEX INCLUDE' has been added to v8.1 of the adapter in #1301

It's not available in v8.0 so I'm not sure why the "adapter reports that it supports includes". Could you clarify?

Best way to clarify is to recreate the issue with a bug script. https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/wiki/How-to-report-a-bug

I was specifically looking at this code from main:

activerecord-sqlserver-adapter/lib/active_record/connection_adapters/sqlserver_adapter.rb

Lines 184 to 186 in 1c5fb1f

    
           def supports_index_include? 
        
             true 
        
           end

If main is your 8.1 branch, then that may be my confusion.

Ah - I see it is. Apologies...