How to filter only unique id documents?

[steevej (Steeve Juneau)]

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How to select the array element

Hi @Prathamesh_N , What you are looking for is called positional projection : Where you can project first element that match a query : "syllabus.topicNames.$" : 1 Or use aggregation { $addFields: { "syllabus.topicNames": { $first: "$syllabus.topicNames" } }} Thanks Pavel

How to fetch all the values of the specified date in the particular array

Try to do that in an aggregation $set stage using $filter.