mongodb中"deletemany"和"remove"之间有什么区别？

Question

这两个命令有什么区别？
db.collection.deleteMany({condition})
db.collection.remove({condition})

Answer 1

据我所知,

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

REF:db.collection.deleteMany

在哪里

db.collection.remove

返回WriteResult

并且要删除单个文档,还有一个类似的命令,db.collection.removeOne其中db.collection.remove需要设置和选项调用justOne选项来限制删除到1个文档.

否则我猜他们是相似的.

node.js驱动程序

在谈论时node.js drivers,remove已被弃用(可能在将来的版本中被删除)和deleteOne或deleteMany.

希望这是有道理的....

Answer 2

他们做同样的事情.不同之处在于返回的值.

用remove():

> db.ticker.remove({"name": "Bitcoin"})
WriteResult({ "nRemoved" : 2 })

用deleteMany():

> db.ticker.deleteMany({"name": "Bitcoin"})
{ "acknowledged" : true, "deletedCount" : 2 }