the-magical-marvels-of-mongodb-slides
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Updating a Field Name With $rename<br />
We can use $rename to change field names.<br />
{<br />
"_id": ObjectId(...),<br />
"name": "Love",<br />
"score": 84,<br />
...<br />
}<br />
{<br />
"_id": ObjectId(...),<br />
"name": "Love",<br />
"grade": 84,<br />
...<br />
}<br />
Renamed to<br />
grade!<br />
Renames<br />
specified<br />
field<br />
SHELL<br />
> db.potions.update(<br />
{},<br />
{"$rename": {"score": "grade"}},<br />
{"multi": true}<br />
).<br />
Field to<br />
rename<br />
New field<br />
name