ListModel from SQL. Relation one to many

[VlastV]

Hello,

There are two tables, user and group.
One to many relationship: group.id = user.group_id.

How do I get out of QSqlQueryModel model similar to:

@
ListModel {
ListElement {
group_id: "12"
name: "Admin"
users: [
ListElement {
user_id: "1"
name: "test1"
},
ListElement {
user_id: "2"
name: "test2"
},
ListElement {
user_id: "3"
name: "test3"
}
]
}
ListElement {
group_id: "223"
name: "Staff"
users: [
ListElement {
user_id: "5"
name: "staff1"
}
]
}
}@