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Support some form of "reduce" operation. #3

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nlfiedler opened this issue Sep 8, 2019 · 1 comment
Open

Support some form of "reduce" operation. #3

nlfiedler opened this issue Sep 8, 2019 · 1 comment

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@nlfiedler
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This library has the "map" concept from CouchDB/PouchDB, but it lacks the corresponding "reduce" that is part of the "map/reduce" paradigm. It is not a critical feature, but it is sometimes useful. In particular, a way to "count" or "sum" the outputs of the map function seems the most common use case.
@nlfiedler
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Added count_by_key() and count_all_keys() which does a query that returns results similar to what a _count CouchDB reducer would produce.

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@nlfiedler