Collections and paths are key concepts in Cypher. To use them for updating data, you can use the FOREACH construct. It allows you to do updating commands on elements in a collection — a path, or a collection created by aggregation.

The identifier context inside of the foreach parenthesis is separate from the one outside it, i.e. if you CREATE a node identifier inside of a FOREACH, you will not be able to use it outside of the foreach statement, unless you match to find it.

Inside of the FOREACH parentheses, you can do any updating commands — CREATE, CREATE UNIQUE, DELETE, and FOREACH.

START begin = node(2), end = node(1)
MATCH p = begin -[*]-> end foreach(n in nodes(p) :
SET n.marked = true)