Go Xorm – UNIQUE constraint failed

解决方法：定义 type 时指明自增

type RelDisplacementHint struct {
    Id           int    `json:"id" xorm:"pk autoincr 'id'"`
    CollectionId int    `json:"collection_id" xorm:"'collection_id'"`
    Translation  string `json:"translation" xorm:"'translation'"`
    Hint         string `json:"hint" xorm:"'hint'"`
}