FLOR or FLWOR

[David Carlisle]

> I do have an example. Correct ?


> for $v in distinct-values($values) where count($values[. = $v]) > 2
> return $v

But that is a typical example where the where clause is not needed.

it is

distinct-values($values)[let $v := . return count($values[. = $v]) > 2]

or simpler

distinct-values($values)[let $v := . return $values[. = $v][2]]


It is possible to come up with cases where where is theoretically more
expressive as it has access to the full tuple stream, but they temd to
be rather artificial.

David



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