albertogpz commented on pull request #6200:
URL: https://github.com/apache/geode/pull/6200#issuecomment-814287858
> We had a small impromtu discussion with the query engine team and some
research on how NoSQL treats null (or nil in some worlds)
>
> * in MongoDB we founnd that
> `The { item : null } query matches documents that either contain the
item field whose value is null or that do not contain the item field.`
>
> * in redis nil is returned if the field does not exist.
>
>
> Hence we think that the current behavior i.e. querying without indexes is
the right result and we should try to make the indexes return the same result.
@nabarunnag Thanks for your comments. If @agingade agrees (I will check his
answers after having provided mine to his comments) I will look into this
possibility.
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