return values of the ANY, ANY AND EVRY, EVERY is boolean

https://forums.couchbase.com/t/any-every-collection-operator-return-value/31480/2

If at least one item in the array satisfies the ANY expression, then it returns the boolean (true, false) or MISSING or NULL

ANY v IN a1 SATISFIES v.x = 123 END

a1 is MISSING returns MISSING
a1 is not array returns NULL
If at least one item in the array satisfies then returns true
else false