site/list/items vs site/list/items/delta returns different response for the same list

[mkkubins]

Hi,

I wanted to ask how to use the get items delta.

For the get items delta request I am using:

expand = "fields"
if custom_columns:
    if user_columns:
        custom_columns.extend(user_columns)
    custom_columns_formatted = ",".join([cs.name for cs in custom_columns])
    expand = f"fields($select={custom_columns_formatted})"

query_params = DeltaRequestBuilder.DeltaRequestBuilderGetQueryParameters(
        expand = expand,
        top = self.TOP_ITEMS
)
request_configuration = DeltaRequestBuilder.DeltaRequestBuilderGetRequestConfiguration(
query_parameters = query_params,
)

client = create_client(credentials=self.credential, scopes=self.scopes)

async with asyncio.timeout(60):
     items = await client.sites.by_site_id(self.site_id).lists.by_list_id(list_id).items.delta.get(request_configuration=request_configuration)

For the get items request I am using:

expand = "fields"
if custom_columns:
    if user_columns:
        custom_columns.extend(user_columns)
    custom_columns_formatted = ",".join([cs.name for cs in custom_columns])
    expand = f"fields($select={custom_columns_formatted})"

  query_params = ItemsRequestBuilder.ItemsRequestBuilderGetQueryParameters(
          expand = expand,
          top = self.TOP_ITEMS
  )
        
  request_configuration = ItemsRequestBuilder.ItemsRequestBuilderGetRequestConfiguration(
  query_parameters = query_params,
  )

  client = create_client(credentials=self.credential, scopes=self.scopes)

  async with asyncio.timeout(60):
      items = await client.sites.by_site_id(self.site_id).lists.by_list_id(list_id).items.get(request_configuration = request_configuration)

Output for the items/delta vs items is differently formatted for link and choice type columns.

Using items/delta:

{
 'Link': 'https://learn.microsoft.com/en-us/graph/api/resources/columndefinition?view=graph-rest-1.0, https://learn.microsoft.com/en-us/graph/api/resources/columndefinition?view=graph-rest-1.0',
 'Multipleselection': ';#Choice 3;#'
 }

Without delta:

{
 'Link': {'Description': 'https://learn.microsoft.com/en-us/graph/api/resources/columndefinition?view=graph-rest-1.0',
  'Url': 'https://learn.microsoft.com/en-us/graph/api/resources/columndefinition?view=graph-rest-1.0'},
 'Multipleselection': ['Choice 3']
}

Is it a bug? Or how can I get the same output for items/delta as I am getting for items, so I don't have to preprocess data after?