The following operations support views:以下操作支持视图：
collMod
count
create
distinct
find
mongosh
db.collection.aggregate()
db.collection.count()
db.collection.countDocuments()
db.collection.distinct()
db.collection.find()
db.collection.findOne()
db.createCollection()
db.createView()
db.getCollection()
db.getCollectionInfos()
db.getCollectionNames()
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On-Demand Materialized Views按需物化视图