mongodb index type
The value of the field in the index specification describes the kind of index for that field. For example, a value of 1 specifies an index that orders items in ... ,For an ascending index on a field, specify a value of 1 ; for descending index, specify a value of -1 . MongoDB supports several different index types including text, geospatial, and hashed indexes. See index types for more information.
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 mongodb index type 相關參考資料
Compatibility and Index Type Changes in MongoDB 2.4 — MongoDB ...
In 2.4 MongoDB adds two new index types: 2dsphere and text . These index types do not exist in 2.2, and for each database, creating a 2dsphere or text index, ... https://docs.mongodb.com Compound Indexes — MongoDB Manual
The value of the field in the index specification describes the kind of index for that field. For example, a value of 1 specifies an index that orders items in ... https://docs.mongodb.com db.collection.createIndex() — MongoDB Manual
For an ascending index on a field, specify a value of 1 ; for descending index, specify a value of -1 . MongoDB supports several different index types including text, geospatial, and hashed indexes. S... https://docs.mongodb.com Indexes — MongoDB Manual
https://docs.mongodb.com Indexing Strategies — MongoDB Manual
The best indexes for your application must take a number of factors into account, including the kinds of queries you expect, the ratio of reads to writes, and the ... https://docs.mongodb.com Manage Indexes — MongoDB Manual
... Remove Indexes; Modify an Index. This page shows how to manage existing indexes. For instructions on creating indexes, refer to the specific index type ... https://docs.mongodb.com Single Field Indexes — MongoDB Manual
The value of the field in the index specification describes the kind of index for that field. For example, a value of 1 specifies an index that orders items in ... https://docs.mongodb.com Text Indexes — MongoDB Manual
Compound Index. A compound index can include a text index key in combination with ascending/descending index keys. However, these compound indexes have the following restrictions: A compound text inde... https://docs.mongodb.com Unique Indexes — MongoDB Manual
createIndex() method with the unique option set to true . copy. copied. db.collection.createIndex( <key and index type specification>, unique: true } ) ... https://docs.mongodb.com [mongoDB]index功能的筆記@ 雷伊的工作心得:: 隨意窩Xuite日誌
mongoDB可以建立index以利未來的searching，在以後searching時如果是searching有建立index的欄位，那麼mongoDB就不會進去資料欄位，而是調出己經建好B ... https://blog.xuite.net |