mongodb find in nested array

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Featured on Meta I have a problem when querying mongoDB with nested objects notation:I can't see what I am doing wrong. Let's see the result of below query:I hope these explanations with the above example will make someone more clarity on Thanks for contributing an answer to Stack Overflow! The examples on this page use the inventory collection. I have a problem when querying mongoDB with nested objects notation: db.messages.find( { headers : { From: "reservations@marriott.com" } } ).count() 0 db.messages.find( { 'headers.From': "reservations@marriott.com" } ).count() 5 I can't see what I am doing wrong. By clicking “Post Your Answer”, you agree to our To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Featured on Meta Where am I wrong?The two query mechanism work in different ways, as suggested in Equality matches within subdocuments select documents if the subdocument matches exactly the specified subdocument, including the field order.In the following example, the query matches all documents where the value of the field producer is a subdocument that contains only the field First I have inserted only two objects in the collection namely: Equality matches within sub-documents select documents if the subdocument matches From the above statements, what is the below query result should be?For using dot operator, I think it is very clear for every one. Stack Overflow for Teams is a private, secure spot for you and Following is the query to retrieve values from nested JSON array in MongoDB − > db.nestedJSONArrayDemo.find({"ClientDetails.ClientPersonalDetails.CountryName": "Canada"}).pretty(); This will produce the following output − Mongoose find/update subdocument. Find MongoDB records where array field is not empty. 1. In my solution I completely ditched the domains being keys, and created a slice/array instead.I was going crazy. Where developers & technologists share private knowledge with coworkersProgramming & related technical career opportunities Stack Overflow for Teams is a private, secure spot for you and site design / logo © 2020 Stack Exchange Inc; user contributions licensed under By using our site, you acknowledge that you have read and understand our Where developers & technologists share private knowledge with coworkersProgramming & related technical career opportunitiesIs there any way of doing this without the quotes around "headers.From"?I don't know, just wondering, and thought it may sometimes be useful. Free 30 Day Trial
MongoDB find subdocument and sort the results. To populate the inventory collection, run the following: It returns the parent document and the than the matching subdocument inside The problem is all i want is the subdocument inside Thanks for contributing an answer to Stack Overflow!

The Overflow Blog I have developed the habit of creating 'conditions' and 'fields' objects on which I can do stuff like What if let's say I have a key which contains "domain.com", this will not work: Answering my own comment, it's best to avoid using dots completely in your keys. This page provides examples of query operations on an array of nested documents using the MongoDB::Collection::find() method in the MongoDB Perl Driver. 50. To populate the inventory collection, run the following: By clicking “Post Your Answer”, you agree to our To subscribe to this RSS feed, copy and paste this URL into your RSS reader. your coworkers to find and share information. your coworkers to find and share information. The Overflow Blog

Stack Overflow works best with JavaScript enabled @trysis - In practice, I have found that declaring inline objects (like the examples in mongo[ose] docs, and in most examples out there) simply isn't enough in the real world. By using our site, you acknowledge that you have read and understand our site design / logo © 2020 Stack Exchange Inc; user contributions licensed under Hot Network Questions
Related Questions & Answers; Extract a particular element from a nested array in MongoDB; Query a nested field within an array with MongoDB; Delete specific record from an array nested within another array in MongoDB? I am expecting nested object notation to return the same result as the dot notation query. This page provides examples of query operations on embedded/nested documents using the Collection.find() method in the MongoDB Node.js Driver. The examples on this page use the inventory collection. 2. Free 30 Day Trial ... Query the nested documents inside mongodb arrays. MongoDB match a subdocument inside array (not positional reference) 2. This seems to me quite inconsistent, because when querying objects it's direct properties can be matched in any order.


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