function size(list|pattern-expression)
To return or filter on the size of a list, use the size() function.
This is the same size() method described before, but instead of passing in a list directly,
you provide a pattern expression that can be used in a match query to provide a new set of results.
The size of the result is calculated, not the length of the expression itself.
Arguments:
RETURN size(['Alice', 'Bob']) AS col MATCH (a) WHERE a.name='Alice' RETURN size((a)-->()-->()) AS fof