mohayu22 commented on issue #729:
URL: https://github.com/apache/age/issues/729#issuecomment-1455079759
Path may look like a list but it is not the same thing as a list in cypher.
Therefore, the head() function cannot be used directly on a path object.
Instead, you can extract the vertices and edges from the path using the nodes()
and relationships() functions respectively, and then apply the head() function
to the resulting lists. For example, to get the first vertex and first edge of
the path, you can modify your query like this:
```
SELECT * FROM cypher('graph', $$
MATCH p = (u {name : "A"})-[e: DISTANCE*]->(v {name : "C"})
RETURN head(nodes(p)), head(relationships(p))
$$) AS (res1 agtype, res2 agtype);
```
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