relation.Type = HasOne
		case reflect.Slice:
			relation.Type = HasMany
		}
	}

	if schema.err == nil {
		schema.setRelation(relation)
		switch relation.Type {
		case HasOne:
			schema.Relationships.HasOne = append(schema.Relationships.HasOne, relation)
		case HasMany:
			schema.Relationships.HasMany = append(schema.Relationships.HasMany, relation)
		case BelongsTo:

			if association.Unscope && oldBelongsToExpr != nil {
				association.Error = association.DB.Model(nil).Where(oldBelongsToExpr).Delete(reflect.New(rel.FieldSchema.ModelType).Interface()).Error
			}
		case schema.HasOne, schema.HasMany:
			var (
				primaryFields []*schema.Field
				foreignKeys   []string
				updateMap     = map[string]interface{}{}

	if uni, ok := uniqueConstraints[name]; ok {
		return &uni, stmt.Table
	}

	getTable := func(rel *schema.Relationship) string {
		switch rel.Type {
		case schema.HasOne, schema.HasMany:
			return rel.FieldSchema.Table
		case schema.Many2Many:
			return rel.JoinTable.Table
		}
		return stmt.Table
	}

	for _, rel := range stmt.Schema.Relationships.Relations {

		}
	}

	assocDB := s.c.g.db.Session(&Session{NewDB: true, Context: ctx}).Model(assocModel).Where(op.Conditions)

	switch rel.Type {
	case schema.HasOne, schema.HasMany:
		assocDB = assocDB.Where("? IN (?)", foreignColumns, base.Select(ownerPKNames))
		switch op.Type {
		case clause.OpUnlink:
			return assocDB.Updates(fkNil).Error
		case clause.OpDelete: