文档get()取全部记录有bug?
取到空记录,reduce()出错
https://developers.weixin.qq.com/miniprogram/dev/wxcloud/reference-sdk-api/database/collection/Collection.get.html
取到空记录,reduce()出错
https://developers.weixin.qq.com/miniprogram/dev/wxcloud/reference-sdk-api/database/collection/Collection.get.html