I want to copy a collection within the same database and give it a different name - basically take a snapshot.
What's the best way to do this? Is there a command, or do I have to copy each record in turn?
I'm aware of the cloneCollection
command, but it seems to be for copying to another server only.
I'm also aware of mongoimport
and mongoexport
, but as I'm doing this via PHP I'd prefer not to make calls out to the shell.
ベストアンサー1
> use yourDatabaseName
> db.myOriginal.aggregate([{$out: "myCopy"}])
It is a lot faster than doing many inserts in a forEach
loop.