public void ShouldTransformComplexQuery()
{
IEnumerable <int> positives = Enumerable.Range(0, 100);
IEnumerable <int> negatives = Enumerable.Range(-100, 0);
Expression body = X.Express(() => from p in positives
from n in negatives
let sum = p + n
where sum == 0
let product = p * n
orderby product descending
select sum.ToString());
QueryExpression query = X.Query(body);
string[] result = query.Compile <Func <IEnumerable <string> > >()().ToArray();
}