How to mark fields as "undefined" in mutations

[mrange]

Hi.

First, I really appreciate Strawberry Shake. We have a GQL API and I felt that in order to be really usable for our customers using C# we need a good client lib. I think Strawberry Shake can be that library that I am now recommending to our users.

Anyway, I am too consuming GQL and is struggling a bit with mutations and "undefined fields".

In my case I want to use Strawberry shake but the schema I am interacting with has some dynamism to it.

So with this mutation

mutation UpdateOrgUnit(
        $cid   : Int
    ,   $r9    : String!
    ,   $nm    : String!
    ,   $r1    : Int
    ,   $r2    : Int
    ,   $r3    : Int
) {
    useCompany(no: $cid) {
    orgUnit9_update(
      filter: {
        orgUnit9No: {_eq: $r9}
      }
      value:{
        name: $nm
        orgUnit1: $r1
        orgUnit2: $r2
        orgUnit3: $r3
      }
    )
    {
      affectedRows
      items {
        orgUnit9No
      }  
    }
  }
}

What I am looking for is that I would sometimes want to set orgUnit1 and orgUnit2 but leave orgUnit3 as is. In other scenario Is like to set 2 and 3 but leave 1 as is.

In the real use case there are more than 10 fields rather than 3.

In JavaScript we use undefined to represent a missing value but that doesn't work for me here as C# (and graphql?) don't have the concept of undefined.

Generating all variants of how I like to set the fields will lead to millions of functions so that doesn't seem a like a way forward.

I can also use dynamically created GQL using string builder but I would like to use Strawberry Shake as much as possible.

I am thinking the approach I should take is loading orgUnit row from the external system, update the fields I am interested in and update the orgUnit from the new row. The issue here then is that I need an extra query and I will also overwrite the other fields if there is a change that came between the query and the update.

Anyway, as I am not an expert in neither Strawberry shake nor GraphQL I am looking for ideas. Perhaps there's already support for this scenario?

I hope my question made sense and in conclusion I want to say again that I really appreciate Strawberry Shake.

Regards,
Mårten