输出一组没有转发的随机推文mongodb

Question

goal: eliminate retweets RT while outputting a random set of tweets

The following code outputs 20 random tweets:

DBQuery.shellBatchSize = 20
db.mycollection.aggregate({$sample: {size: 20}}, {$project: {"_id": 0,"text": 1}})

The following code eliminates retweets:

db.mycollection.find({text:{$nin:[/^RT /]}},{text:1, _id:0})

question: Is there a way to add text:{$nin:[/^RT /] to db.mycollection.aggregate code to eliminate retweets RT and generate a given number of random tweets? if not, what line of code will allow me to do so?

Answer 1

Per Veeram的评论：

db.mycollection.aggregate({$match:{text:{$nin:[/^RT /]}}},{$sample: {size: 20}}, {$project: {"_id": 0,"text": 1}})