> db.persons.find()
{ "_id" : 2, "name" : "33" }
{ "_id" : 3, "name" : "33" }
{ "_id" : 4, "name" : "4" }
{ "_id" : 5, "books" : [ "js", "db", "java" ] }
> ps = db.runCommand({ "findAndModify":"persons", "query":{"name":"33"}, "update
":{"$set":{"name":"333"}}, "new":true })
{
"value" : {
"_id" : 2,
"name" : "333"
},
"lastErrorObject" : {
"updatedExisting" : true,
"n" : 1
},
"ok" ......
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