GraphQL RDBMS Performance

With GraphQL you can create custom API request, but it seems that on backend all available data are loaded from DB in the same way as for REST API.

I have eager with fetch_partial enabled.
I have Category with one-to-one relation to CategoryDetail. If I want to to ask only for all CategoryDetail IDs, I will create query like this:
```
{
categories {
categoryDetail {
id
}
}
}
```
But from DB all columns are loaded, so query looks like this:
```
SELECT
c0_.id AS id_0,
c0_.idMaxId AS idMaxId_1,
c0_.isSeparator AS isSeparator_2,
c0_.isHidden AS isHidden_3,
c0_.isLocked AS isLocked_4,
c0_.lft AS lft_5,
c0_.lvl AS lvl_6,
c0_.rgt AS rgt_7,
c0_.name AS name_8,
c0_.created AS created_9,
c0_.changed AS changed_10,
c1_.id AS id_11,
c1_.descriptionTop AS descriptionTop_12,
c1_.descriptionBottom AS descriptionBottom_13,
c0_.idWebsite AS idWebsite_18,
c0_.idParent AS idParent_19,
c0_.idUrlItem AS idUrlItem_20,
c1_.idWebsite AS idWebsite_21,
c1_.idCategory AS idCategory_22
FROM
Category c0_
LEFT JOIN
CategoryDetail c1_ ON c0_.id = c1_.idCategory
WHERE
c0_.idWebsite = ?
ORDER BY c0_.id ASC
```
But this query would be sufficient
```
SELECT
c0_.id AS id_0,
c1_.id AS id_11,
c0_.idWebsite AS idWebsite_18,
c1_.idCategory AS idCategory_22
FROM
Category c0_
LEFT JOIN
CategoryDetail c1_ ON c0_.id = c1_.idCategory
WHERE
c0_.idWebsite = ?
ORDER BY c0_.id ASC
```

Is it possible to optimalize DB queries for GraphQL like this? Or do you plan similar feature in future?
Thanks.