Web10 mei 2024 · The executed query is the following: SELECT "Like"."postId" FROM "like" "Like" WHERE "Like"."userId" = $1 AND "Like"."contestId" = $2 -- PARAMETERS: [3,3] Which returns the following - desired - output: The problem is that the above getPostIds method always returns an empty array. What am I missing? 8 Contributor Web13 mei 2024 · MongoDB: Check if value is null or the array is empty. I would like to match all documents that don't contain the "Company" attribute or where the "Company" value …
mongodb - Mongoose aggregation check in twice nested array of …
WebWhy am I getting an empty array from MongoCollection::find 2015-01-05 14:02:40 1 93 php / mongodb. Getting an empty array Mongoose 2024-10-18 16:12:25 1 22 ... getting empty array in mongoose by using mongoDB 2024-11 ... Web27 jul. 2024 · You can use a match,to filter out the empty arrays (size=0). But i dont think that match and unwind after will have any difference in perfomance. false is the default,so you dont need this option {"preserveNullAndEmptyArrays", false} If the question is if you can remove the documents that didnt joined with any, at $lookup stage ericsson nyemission
Find MongoDB records where array field is empty - Stack Overflow
Web10 apr. 2024 · I am building a web application using MongoDB and NodeJS (Typescript). I am using Typegoose for interacting with mongodb from my application. Now, I am having a problem using nested discriminator especially inserting array of object to the field. Below is my code. These are my model classes WebWhy am I getting an empty array from MongoCollection::find 2015-01-05 14:02:40 1 93 php / mongodb. Getting an empty array Mongoose 2024-10-18 16:12:25 1 22 ... getting … Web28 apr. 2024 · I created mongoose schema for find document in MongoDB but it doesn't work, return always an empty array. In MongoDB, I have a collection with such … find the 4th root of 16i