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Type: Task
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Resolution: Done
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Priority: Major - P3
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Affects Version/s: None
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Labels:
From the docs it wasn't clear to me that the number of index entries for an array field is based on the number of distinct values in the array.
I read the docs below to imply that the number of entries is based on the number of values in the array.
For example, this array [1,1,2] will generate 2 index entries, not 3. This was highlighted in NHTT training and I think the docs should explain it.
https://docs.mongodb.com/manual/core/index-multikey/
"To index a field that holds an array value, MongoDB creates an index key for each element in the array. "
https://docs.mongodb.com/manual/indexes/
"MongoDB creates separate index entries for every element of the array"