result:=model.DB().Exec("insert into cp_relation(user_id1, user_id2) select ?,? where not exists (select user_id1 from cp_relation where user_id1 in (?) or user_id2 in (?));",userId1,userId2,userIds,userIds)
oldCp:=make([]*Cp,0)
// 这两个人以前是否有旧的cp关系
err:=model.DB().Model(Cp{}).Where("status = 1 and user_id1 in (?) and user_id2 in (?)",userIds,userIds).Find(&oldCp).Error
result:=model.DB().Exec("insert into cp_relation(user_id1, user_id2, created_time) select ?,?,? where not exists (select user_id1 from cp_relation where user_id1 in (?) or user_id2 in (?));",userId1,userId2,createdTime.Format(utils.DATETIME_FORMAT),userIds,userIds)