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Generating select into join clause

See original GitHub issue

I’m getting this SQL when i’m making a join clause:

select 
  "CALL_REQ"."ID", 
  "CALL_REQ"."DESCRIPTION",
  "CUSTOMER"."CONTACT_UUID" "CUSTOMER_CONTACT_UUID", 
  "CUSTOMER"."FIRST_NAME" "CUSTOMER_FIRST_NAME",
  "CUSTOMER"."LAST_NAME" "CUSTOMER_LAST_NAME"
from
  "CALL_REQ"
  inner join (select "CA_CONTACT".* from "CA_CONTACT") "CUSTOMER" on "CUSTOMER"."CONTACT_UUID" = "CALL_REQ"."CUSTOMER"
where "CALL_REQ"."PERSID" = ? and "CALL_REQ"."TYPE" = ?

My db connector is oracle. Here is my code:

// ticket.js
export default class Ticket extends Model {

    static get tableName() {
        return 'CALL_REQ';
    }

    static get idColumn() {
        return 'PERSID';
    }

    static get relationMappings() {
        const Contact =  require('./contact').default;
        return {
            customer: {
                relation: Model.BelongsToOneRelation,
                modelClass: Contact,
                join: {
                    from: `${Contact.tableName}.CONTACT_UUID`,
                    to: `${Ticket.tableName}.CUSTOMER`                    
                }
            }
        }
    }
}

// contact.js
export default class Contact extends Model {

    static get tableName() {
        return 'CA_CONTACT';
    }

    static get idColumn() {
        return 'CONTACT_UUID';
    }
}

And in my query js file i have

let fields = ['CALL_REQ.ID', 'CALL_REQ.DESCRIPTION']
    .concat(['CUSTOMER.CONTACT_UUID as CUSTOMER_CONTACT_UUID', 
    'CUSTOMER.FIRST_NAME as CUSTOMER_FIRST_NAME',
    'CUSTOMER.LAST_NAME as CUSTOMER_LAST_NAME']);
        
return await Ticket.query()
    .findById(id)
    .select(fields)
    .joinRelated('customer', { alias: 'CUSTOMER' })
    .andWhere(Ticket.tableName + '.TYPE', 'R');

What i’ve to do to get the next SQL?

sql
select 
  "CALL_REQ"."ID", 
  "CALL_REQ"."DESCRIPTION",
  "CUSTOMER"."CONTACT_UUID" "CUSTOMER_CONTACT_UUID", 
  "CUSTOMER"."FIRST_NAME" "CUSTOMER_FIRST_NAME",
  "CUSTOMER"."LAST_NAME" "CUSTOMER_LAST_NAME"
from
  "CALL_REQ"
  inner join "CA_CONTACT" "CUSTOMER" on "CUSTOMER"."CONTACT_UUID" = "CALL_REQ"."CUSTOMER"
where "CALL_REQ"."PERSID" = ? and "CALL_REQ"."TYPE" = ?

I’m using objection@2.0.8 Thanks!