mongodb 中的“deletemany”和“remove”有什么区别？
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What's the difference between "deletemany" and "remove" in mongodb?
提问by look
What's the difference between the two commands here?db.collection.deleteMany({condition})db.collection.remove({condition})
这里的两个命令有什么区别？db.collection.deleteMany({condition})db.collection.remove({condition})
采纳答案by Dave Amit
As far as I can say,
据我所知，
db.collection.deleteMany
db.collection.deleteMany
Returns:
A document containing:
> A boolean acknowledged as true if the operation ran with write concern or false if write concern was disabled
> deletedCount containing the number of deleted documents
Where as
然而
db.collection.remove
db.collection.remove
return WriteResult
返回写入结果
And to remove a single document, there a similar command, db.collection.removeOnewhere as with db.collection.removeyou need to set and option called justOneoption to limit delete to 1 document.
要删除单个文档，有一个类似的命令，db.collection.removeOne其中db.collection.remove您需要设置和选项称为justOne选项以将删除限制为 1 个文档。
Otherwise I guess they are similar.
否则我猜他们是相似的。
node.js drivers
node.js 驱动程序
When talking about node.js drivers, removehas been deprecated (and may be removed in future releases) and deleteOneor deleteMany.
在谈论 时node.js drivers，remove已被弃用（并且可能会在未来版本中删除）和deleteOne或deleteMany。
Hope this makes sense ....
希望这是有道理的......
回答by Revol89
They do the same. The difference is the valuesthat return.
他们做同样的事情。不同之处在于返回的值。
With remove():
与remove()：
> db.ticker.remove({"name": "Bitcoin"})
WriteResult({ "nRemoved" : 2 })
With deleteMany():
与deleteMany()：
> db.ticker.deleteMany({"name": "Bitcoin"})
{ "acknowledged" : true, "deletedCount" : 2 }
