mongodb query multiple
For the second condition, you can use the $in operator in your query as: db.emp.find( "type" : "$in": ["WebUser", "User"] }, "city" : "$in": ["Pune", "Mumbai"] } }). ,Your updated solution in your question is generally fine, as using $in is an excellent way of fetching a set of results (you'll want to make sure that you've indexed ...
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 mongodb query multiple 相關參考資料
MongoDB: how to filter by multiple fields – Developers Log
Learn how to filter by multiple fields in MongoDB, and how to use basic ... to query the MongoDB collections filtering by different conditions. https://developerslogblog.word MongoDB query with multiple conditions - Stack Overflow
For the second condition, you can use the $in operator in your query as: db.emp.find( "type" : "$in": ["WebUser", "User"] }, "city" : "$in"... https://stackoverflow.com Multiple queries inside mongodb query - Stack Overflow
Your updated solution in your question is generally fine, as using $in is an excellent way of fetching a set of results (you'll want to make sure that you've indexed ... https://stackoverflow.com Search multiple fields for multiple values in MongoDB - Stack ...
try db.collection.find( // Find documents matching any of these values $or:[ "field1":"$in":["foo","bar"]}}, "field2":"$in":["foo"... https://stackoverflow.com Query Operators - MongoDB Documentation
MongoDB provides an implicit AND operation when specifying a comma separated list of expressions. Examples¶. AND Queries With Multiple Expressions ... https://docs.mongodb.com db.collection.find() - MongoDB Documentation
Use the $elemMatch operator to specify multiple criteria on an array element. For more information and examples of querying an array, see: Query an Array ... https://docs.mongodb.com $in — MongoDB Manual
For additional examples in querying, see: Query Documents. Use the $in Operator with a Regular Expression¶. The ... https://docs.mongodb.com MongoDB query multiple collections at once - Stack Overflow
Trying to JOIN in MongoDB would defeat the purpose of using MongoDB. You could, however, use a DBref and write your application-level code (or library) so ... https://stackoverflow.com Mongodb execute multiple queries in one round trip - Stack ...
Yes, there is something similar in MongoDB. Using Aggregation Framework you can define multiple aggregation pipelines inside $facet stage. https://stackoverflow.com How can I query multiple collections in mongodb at same time ...
Hi, I want to query data from different collections at the same time. The collections maybe in same mongodb, maybe not. I see the Querying Existing Query ... https://discuss.redash.io |