WebJul 6, 2024 · We could use the find () command to check for equality to null. The filter for { department : null } would match documents with the department field explicitly set to null OR documents where the that do not contain the department field. This is a nuance that you’ll want to commit to memory. So the command: 1 WebWhen using scalar list filters with a relational database connector, array fields with a NULL value are not considered by the following conditions: NOT (array does not contain X) isEmpty (array is empty) This means that records you might expect to see are not returned. Consider the following examples:
Find MongoDB records where array field is not empty
WebAug 29, 2024 · There are various methods available to see if the collection is empty. They are − Using the isEmpty () method The isEmpty () method returns true/false. It’s true when the collection is empty and false if it’s not. Following is … WebAug 30, 2024 · Mongodb documents where array field exists and not empty To find mongo records where an array field exists and not empty, you need to use element query … mail rediff login
How to check empty field in a MongoDB collection - TutorialsPoint
WebMay 15, 2024 · here docs is an array field and want to check that it is not empty. mongodb; spring-data-mongodb; Share. Improve this question. Follow asked May 15, 2024 at 17:38. Rakesh Rakesh. ... how to search the array with no empty value from mongodb in java? Related. 613. WebFeb 6, 2024 · mongodb filter empty array Awgiedawgie collection.find ( { arrayElementName: { $exists: true, $not: {$size: 0} } }) View another examples Add Own solution Log in, to leave a comment 4 1 Awgiedawgie 104555 points db.collection.find ( {arrayElementName : {$exists:true, $size:0}}) Thank you! 1 4 (1 Votes) 0 3.5 3 Phoenix … WebIf the array followed the $all operator is empty, then the $all operator matches no documents. When the array followed the $all operator contains a single element, you should use the contain expression instead: { : element1 } Code language: HTML, XML (xml) $all and $and The following expression that uses the $all operator: oak hills to temecula