jrgemignani commented on issue #1709:
URL: https://github.com/apache/age/issues/1709#issuecomment-2033310671
@mingfang Question - Just curious, why are you doing it this particular way?
If you use merge as follows, it works -
```
psql-16.1-5432-pgsql=# SELECT * FROM cypher('playground', $$
UNWIND [{first: 'jon', last: 'snow'}, {first: 'ned', last: 'stark'}] AS map
MERGE (v:PERSON {first: map.first, last: map.last}) RETURN v $$) AS (v
agtype);
v
-----------------------------------------------------------------------------------------------------
{"id": 844424930131971, "label": "PERSON", "properties": {"last": "snow",
"first": "jon"}}::vertex
{"id": 844424930131972, "label": "PERSON", "properties": {"last": "stark",
"first": "ned"}}::vertex
(2 rows)
psql-16.1-5432-pgsql=# SELECT * FROM cypher('playground', $$
MATCH (v:PERSON)
RETURN v
$$) AS (v agtype);
v
-----------------------------------------------------------------------------------------------------
{"id": 844424930131971, "label": "PERSON", "properties": {"last": "snow",
"first": "jon"}}::vertex
{"id": 844424930131972, "label": "PERSON", "properties": {"last": "stark",
"first": "ned"}}::vertex
(2 rows)
psql-16.1-5432-pgsql=#
```
I'm thinking this might be an issue with SET, and not MERGE.
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