Add Order to plan output if it exists

[oskarhane]

Only in neo4j >= 3.5.0 where index backed order by is a thing.

Examples below are for the query: EXPLAIN MATCH (n:Person) WHERE n.age > 18 RETURN n.name ORDER BY n.age

It will show up in the Query Plan like this example: Ordered by n.age
(note that screenshots below have old wording, but the principle is still true)

When connected to neo4j 3.4:

On 3.5.0 without index:

On 3.5.0 with index:

[sherfert]

Nice!

I would change Order by index into either Ordered by or Row ordering. The word index suggests that the ordering always results from an index, but it can also be inserted after a Sort operation, as in your "On 3.5.0 without index" example.