Guys i am finding hard to understand whats the difference between those two.Please someone explain.Thanks in advance
There are 2 ways to use $elemMatch
operator,
Below reference documents clears every doubts of usage with example.
1) $elemMatch
(query)
The
$elemMatch
operator matches documents that contain an array field with at least one element that matches all the specified query criteria.
2) $elemMatch
(projection)
The
$elemMatch
operator limits the contents of an<array>
field from the query results to contain only the first element matching the$elemMatch
condition.
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