The partial_filter_selector field replaces the selector field, previously only valid in text indexes. Your view query options are controlled by query parameters added to your view’s URL. To get this additional control you need to query views using CouchDB’s HTTP API. The longpoll feed, probably most applicable for a browser, is a more efficient form of polling that waits for a change to occur before the response is sent.longpoll avoids the need to frequently poll CouchDB to discover nothing has changed!. For more information, see the CouchDB documentation and the original example. Long Polling¶. Creating and Managing Views. A better way might be to pick one keyword to perform your query and then to use client code to select the documents that match all of the keywords out of the results returned by CouchDB. Create a Directory couchdb/views and instantiate a FolderDesignDocument in the following way and create the design document in the database: 1 These selectors match the document with that value in its _id field. See Table 4-1 for a list of available query parameters. Selectors. The simplest selectors are just a string. CouchDB’s views are stored in the B-tree file structure (which will be described in more detail later on). With SQL I would do something like. Doctrine CouchDB ODM allows you to create and query views in your application. The whole CouchDB query documentation can be found here. IBM Cloudant Query supports partial indexes by using the partial_filter_selector field. { "selector": { "type": "offer" } } I don't fully understand the part of the question where you say "which exist in an OfferID field." Here are some common ways of selecting the elements on a page. CouchDB started reading at the bottom of the view and went backward until it hit endkey. Now that looks a lot better. but it's important to note that Cloudant Query & Mango can only query single documents - you can't say "get me all the documents which are offers, where another document has a certain property". Besides the “selector” property, CouchDB has a few other neat properties to aid in your query. The CouchDB connector provides access to Apache CouchDB servers. Uses Cloudant query syntax. The #id selector. Alternatively, in the selector query the index can be specified using the use_index keyword. It allows you to search for, add, update and delete documents in a CouchDB server. Default is false. 1.3.12.1.2. Upon deployment, the index will automatically be utilized by chaincode queries. SELECT * FROM database.table WHERE database.table.id IN (2,4,56); What is a recipe for doing this in CouchDB by either _id or another field? nano.find(selector, [callback]) performs a "Mango" query by supplying a JavaScript object containing a selector: the fields option can be used to retrieve specific fields. You can do this using cURL, so most of the examples in this chapter will only be provided in cURL. I would like to query for a list of particular documents with one call to CouchDB. Below code demonstrates how to retrieve documents from couchdb. 4d 2: Retrieve multiple files - nano.find(selector). CouchDB can automatically determine which index to use based on the fields being used in a query. When you want more dynamic data processing than you can get with pure-CouchDB views, some client-side processing can make up the difference nicely. The View to Get Comments for Posts. selector: [String:Any] – JSON object describing criteria used to select documents. 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