MongoDB batch modify values

class:MongoDB views:134 Author:xiaomo314
db.getCollection('rule').update({"key":".$"},{$set:{"key":"\\\\.$"}},false, true)
{"key":".$"} : query condition
{$set:{"key":"\\\\.$"}} : update statement
false : Do not insert data if it does not exist
true : all the query data is processed
Operation result
Updated 5615 existing record(s) in 227ms

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