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MongoDB array index
To index a field that holds an array value, MongoDB creates an index key for each element in the array. These multikey indexes support efficient queries ...
MongoDB Manual - How to query an array: query on the array field as a whole, check if element in array, query for array element, query if field in array, ...
MongoDB uses multikey indexes to index the content stored in arrays. If you index a field that holds an array value, MongoDB creates separate index entries for ...
2019年2月26日When you index an array field, MongoDB creates a multi-key index. A multi index index includes a pointer to the document for each element in its ...
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2021年2月17日MongoDB allows to index a field that holds an array value by creating an index key for each element in the array, such type of indexing is ...
Indexing Array Fields ... Suppose we want to search user documents based on the user's tags. For this, we will create an index on tags array in the collection.
2020年10月16日Learn how to filter elements from arrays in MongoDB by using the ... as a result, we get documents in which one element of the array matches ...
When you index a field that holds an array value, MongoDB creates an index key for each element in the array. This means that the index size increases, ...

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