mingfang commented on issue #1691:
URL: https://github.com/apache/age/issues/1691#issuecomment-2004732935
Also this is only a problem when multiple MERGE are called in the same query.
e.g. this works as expected, only one vertex is created
```
SELECT * FROM cypher('playground', $$
unwind ["foo"] as each
merge (v:TEST {name: each})
return v
$$) AS (v agtype)
SELECT * FROM cypher('playground', $$
unwind ["foo"] as each
merge (v:TEST {name: each})
return v
$$) AS (v agtype)
```
I'm guessing if multiple MERGE in the same query somehow is not seeing each
statement's "state" since the transaction is not committed yet. Totally a wild
guess.
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