Query().Unique(true) includes fields not specified in Select

[domust]

Uniqueness query includes an id field, which is not specified in the explicit call to select method.

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Current Behavior 😯

SELECT DISTINCT id, name
FROM persons

Expected Behavior 🤔

SELECT DISTINCT name
FROM persons

Steps to Reproduce 🕹

Steps:

1. Define a table:

import "entgo.io/ent"

type Person struct {
        ent.Schema
}

2. Define the columns:

import (
        "entgo.io/ent"
        "entgo.io/ent/schema/field"
        "github.com/google/uuid"
)

func (Person) Fields() []ent.Field {
        return []ent.Fields{
                field.UUID("id", uuid.UUID{}).Default(uuid.New),
                field.String("name"),
        }
}

3. Insert 2 persons with the same name.

4. Execute the following query:

people, err := entClient.Person.Query().Unique(true).Select(person.FieldName).All(ctx)
// len(people) should return 1, not 2.

Your Environment 🌎

Tech	Version
Go	1.22.?
Ent	0.12.3
Database	PostgreSQL
Driver	https://github.com/lib/pq

[godcong]

What about using Scan instead?