集合上的方法
db.test.addIdIfNeeded( db.test.getSplitKeysForChunks(
db.test.aggregate( db.test.getWriteConcern(
db.test.bulkWrite( db.test.group(
db.test.constructor db.test.groupcmd(
db.test.convertToCapped( db.test.hasOwnProperty
db.test.convertToSingleObject( db.test.hashAllDocs(
db.test.copyTo( db.test.help(
db.test.count( db.test.initializeOrderedBulkOp(
db.test.countDocuments( db.test.initializeUnorderedBulkOp(
db.test.createIndex( db.test.insert(
db.test.createIndexes( db.test.insertMany(
db.test.dataSize( db.test.insertOne(
db.test.deleteMany( db.test.isCapped(
db.test.deleteOne( db.test.latencyStats(
db.test.distinct( db.test.mapReduce(
db.test.drop( db.test.propertyIsEnumerable
db.test.dropIndex( db.test.prototype
db.test.dropIndexes( db.test.reIndex(
db.test.ensureIndex( db.test.remove(
db.test.estimatedDocumentCount( db.test.renameCollection(
db.test.exists( db.test.replaceOne(
db.test.explain( db.test.runCommand(
db.test.find( db.test.runReadCommand(
db.test.findAndModify( db.test.save(
db.test.findOne( db.test.setSlaveOk(
db.test.findOneAndDelete( db.test.setWriteConcern(
db.test.findOneAndReplace( db.test.shellPrint(
db.test.findOneAndUpdate( db.test.stats(
db.test.getCollection( db.test.storageSize(
db.test.getDB( db.test.toLocaleString
db.test.getFullName( db.test.toString(
db.test.getIndexKeys( db.test.tojson(
db.test.getIndexSpecs( db.test.totalIndexSize(
db.test.getIndexes( db.test.totalSize(
db.test.getIndices( db.test.unsetWriteConcern(
db.test.getMongo( db.test.update(
db.test.getName( db.test.updateMany(
db.test.getPlanCache( db.test.updateOne(
db.test.getQueryOptions( db.test.validate(
db.test.getShardDistribution( db.test.valueOf
db.test.getShardVersion( db.test.verify(
db.test.getSlaveOk(
集合方法说明
db.test.find().help() - show DBCursor help
db.test.bulkWrite( operations, ) - bulk execute write operations, optional parameters are: w, wtimeout, j
db.test.count( query = {}, ) - count the number of documents that matches the query, optional parameters are: limit, skip, hint, maxTimeMS
db.test.countDocuments( query = {}, ) - count the number of documents that matches the query, optional parameters are: limit, skip, hint, maxTimeMS
db.test.estimatedDocumentCount( ) - estimate the document count using collection metadata, optional parameters are: maxTimeMS
db.test.copyTo(newColl) - duplicates collection by copying all documents to newColl; no indexes are copied.
db.test.convertToCapped(maxBytes) - calls {convertToCapped:'test', size:maxBytes}} command
db.test.createIndex(keypattern[,options])
db.test.createIndexes([keypatterns], )
db.test.dataSize()
db.test.deleteOne( filter, ) - delete first matching document, optional parameters are: w, wtimeout, j
db.test.deleteMany( filter, ) - delete all matching documents, optional parameters are: w, wtimeout, j
db.test.distinct( key, query, ) - e.g. db.test.distinct( 'x' ), optional parameters are: maxTimeMS
db.test.drop() drop the collection
db.test.dropIndex(index) - e.g. db.test.dropIndex( "indexName" ) or db.test.dropIndex( { "indexKey" : 1 } )
db.test.dropIndexes()
db.test.ensureIndex(keypattern[,options]) - DEPRECATED, use createIndex() instead
db.test.explain().help() - show explain help
db.test.reIndex()
db.test.find([query],[fields]) - query is an optional query filter. fields is optional set of fields to return.
e.g. db.test.find( {x:77} , {name:1, x:1} )
db.test.find(...).count()
db.test.find(...).limit(n)
db.test.find(...).skip(n)
db.test.find(...).sort(...)
db.test.findOne([query], [fields], [options], [readConcern])
db.test.findOneAndDelete( filter, ) - delete first matching document, optional parameters are: projection, sort, maxTimeMS
db.test.findOneAndReplace( filter, replacement, ) - replace first matching document, optional parameters are: projection, sort, maxTimeMS, upsert, returnNewDocument
db.test.findOneAndUpdate( filter, update, ) - update first matching document, optional parameters are: projection, sort, maxTimeMS, upsert, returnNewDocument
db.test.getDB() get DB object associated with collection
db.test.getPlanCache() get query plan cache associated with collection
db.test.getIndexes()
db.test.group( { key : ..., initial: ..., reduce : ...[, cond: ...] } )
db.test.insert(obj)
db.test.insertOne( obj, ) - insert a document, optional parameters are: w, wtimeout, j
db.test.insertMany( [objects], ) - insert multiple documents, optional parameters are: w, wtimeout, j
db.test.mapReduce( mapFunction , reduceFunction , )
db.test.aggregate( [pipeline], ) - performs an aggregation on a collection; returns a cursor
db.test.remove(query)
db.test.replaceOne( filter, replacement, ) - replace the first matching document, optional parameters are: upsert, w, wtimeout, j
db.test.renameCollection( newName , ) renames the collection.
db.test.runCommand( name , ) runs a db command with the given name where the first param is the collection name
db.test.save(obj)
db.test.stats({scale: N, indexDetails: true/false, indexDetailsKey: , indexDetailsName: })
db.test.storageSize() - includes free space allocated to this collection
db.test.totalIndexSize() - size in bytes of all the indexes
db.test.totalSize() - storage allocated for all data and indexes
db.test.update( query, object[, upsert_bool, multi_bool] ) - instead of two flags, you can pass an object with fields: upsert, multi
db.test.updateOne( filter, update, ) - update the first matching document, optional parameters are: upsert, w, wtimeout, j
db.test.updateMany( filter, update, ) - update all matching documents, optional parameters are: upsert, w, wtimeout, j
db.test.validate( ) - SLOW
db.test.getShardVersion() - only for use with sharding
db.test.getShardDistribution() - prints statistics about data distribution in the cluster
db.test.getSplitKeysForChunks( ) - calculates split points over all chunks and returns splitter function
db.test.getWriteConcern() - returns the write concern used for any operations on this collection, inherited from server/db if set
db.test.setWriteConcern( ) - sets the write concern for writes to the collection
db.test.unsetWriteConcern( ) - unsets the write concern for writes to the collection
db.test.latencyStats() - display operation latency histograms for this collection
本文作者：前端首席体验师(CheongHu)
联系邮箱：[email protected]
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