Realm calculate and sort using subquery





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is there a way calculating and sorting using subquerys?



I have this objects(simplified) in my Realm database:



class Customer: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var name: String? = nil

}



class Order: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var customer_id: String? = nil

    @objc dynamic var region_id: String? = nil



    let total = RealmOptional<Float>()

}


Now I want to get only customers with orders in a region (using region_id) and sort the customers by calculating the total of all orders in that region.



Thanks,
Urkman






ios swift realm







share|improve this question























  • I don't understand, what relation is between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:09











  • In "Order" there is a "customer_id"...

    – Urkman
    Jan 3 at 11:11













  • Wouldn't be better to have relation many to many between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:12













  • Sure, I can update the database to have a let orders = List<Order>(). But, would that help me in this case?

    – Urkman
    Jan 3 at 11:14


















0















is there a way calculating and sorting using subquerys?



I have this objects(simplified) in my Realm database:



class Customer: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var name: String? = nil

}



class Order: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var customer_id: String? = nil

    @objc dynamic var region_id: String? = nil



    let total = RealmOptional<Float>()

}


Now I want to get only customers with orders in a region (using region_id) and sort the customers by calculating the total of all orders in that region.



Thanks,
Urkman






ios swift realm







share|improve this question























  • I don't understand, what relation is between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:09











  • In "Order" there is a "customer_id"...

    – Urkman
    Jan 3 at 11:11













  • Wouldn't be better to have relation many to many between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:12













  • Sure, I can update the database to have a let orders = List<Order>(). But, would that help me in this case?

    – Urkman
    Jan 3 at 11:14














0












0








0








is there a way calculating and sorting using subquerys?



I have this objects(simplified) in my Realm database:



class Customer: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var name: String? = nil

}



class Order: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var customer_id: String? = nil

    @objc dynamic var region_id: String? = nil



    let total = RealmOptional<Float>()

}


Now I want to get only customers with orders in a region (using region_id) and sort the customers by calculating the total of all orders in that region.



Thanks,
Urkman






ios swift realm







share|improve this question














is there a way calculating and sorting using subquerys?



I have this objects(simplified) in my Realm database:



class Customer: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var name: String? = nil

}



class Order: RealmSwift.Object {

    @objc dynamic var id: String? = nil

    @objc dynamic var customer_id: String? = nil

    @objc dynamic var region_id: String? = nil



    let total = RealmOptional<Float>()

}


Now I want to get only customers with orders in a region (using region_id) and sort the customers by calculating the total of all orders in that region.



Thanks,
Urkman






ios swift realm




ios swift realm






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 3 at 11:05









UrkmanUrkman

6771024




6771024













  • I don't understand, what relation is between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:09











  • In "Order" there is a "customer_id"...

    – Urkman
    Jan 3 at 11:11













  • Wouldn't be better to have relation many to many between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:12













  • Sure, I can update the database to have a let orders = List<Order>(). But, would that help me in this case?

    – Urkman
    Jan 3 at 11:14



















  • I don't understand, what relation is between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:09











  • In "Order" there is a "customer_id"...

    – Urkman
    Jan 3 at 11:11













  • Wouldn't be better to have relation many to many between Customer and Order?

    – Robert Dresler
    Jan 3 at 11:12













  • Sure, I can update the database to have a let orders = List<Order>(). But, would that help me in this case?

    – Urkman
    Jan 3 at 11:14

















I don't understand, what relation is between Customer and Order?

– Robert Dresler
Jan 3 at 11:09





I don't understand, what relation is between Customer and Order?

– Robert Dresler
Jan 3 at 11:09













In "Order" there is a "customer_id"...

– Urkman
Jan 3 at 11:11







In "Order" there is a "customer_id"...

– Urkman
Jan 3 at 11:11















Wouldn't be better to have relation many to many between Customer and Order?

– Robert Dresler
Jan 3 at 11:12







Wouldn't be better to have relation many to many between Customer and Order?

– Robert Dresler
Jan 3 at 11:12















Sure, I can update the database to have a let orders = List<Order>(). But, would that help me in this case?

– Urkman
Jan 3 at 11:14





Sure, I can update the database to have a let orders = List<Order>(). But, would that help me in this case?

– Urkman
Jan 3 at 11:14












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