Failing to fetch data without WHERE statements

[Somebi]

Throwing error if no where statements in the query.

Code:

    yql_query = f"select id, image_url, created_at from images {where_clause if where_clause else 'where true'}"
    query_body = {
        "hits": params.per_page,
        "offset": offset
    }
    response = vespa_app.query(yql=yql_query, body=query_body)

Error:

  File "/home/beck/.local/share/virtualenvs/api-bjhqPKPA/lib/python3.11/site-packages/vespa/application.py", line 316, in query
    return sync_app.query(body=body, groupname=groupname, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/beck/.local/share/virtualenvs/api-bjhqPKPA/lib/python3.11/site-packages/vespa/application.py", line 1236, in query
    raise_for_status(response)
  File "/home/beck/.local/share/virtualenvs/api-bjhqPKPA/lib/python3.11/site-packages/vespa/application.py", line 73, in raise_for_status
    raise VespaError(errors) from http_error
vespa.exceptions.VespaError: [{'code': 4, 'summary': 'Invalid query parameter', 'message': 'Could not create query from YQL: Expected operator FILTER, got SCAN.'}]

This one is failing:
select id, image_url, created_at from images

Working only if specified like this:
select id, image_url, created_at from images where true

[thomasht86]

This is as expected. See https://docs.vespa.ai/en/reference/select-reference.html.