cypher query result using DISTINCT clause

[Marwa Elabri]

Hi

I want to execute this query :

MATCH (N0:user) 

OPTIONAL MATCH (N0:user)-[R0:rating]->()

WITH distinct N0,R0, N0.age as AN0,  count(R0.likes) as AR0

order by ID(N0), AN0, AR0 desc 

WITH   N0.age as O1,  head(collect(R0.likes)) as O2, N0

RETURN  O1, O2, count(ID(N0)) 

ORDER BY  O1, O2

But I don't know why if I change the order of variables (N0,R0,..) after the clause DISTINCT this change the result of the query 

have you any axplanation for this please I need this urgently