jrgemignani opened a new issue, #979:
URL: https://github.com/apache/age/issues/979
**Describe the bug**
The MERGE command doesn't see a valid case of variable reuse for a vertex.
**How are you accessing AGE (Command line, driver, etc.)?**
psql command line
**What data setup do we need to do?**
Setup shouldn't matter. However, this was done on an empty graph database.
**What is the necessary configuration info needed?**
AGE
**What is the command that caused the error?**
The following command fails, but the second 'x' should be seen as a valid
reuse of 'x'. This command works successfully on Neo4j.
```
psql-11.5-5432-pgsql=# SELECT * FROM cypher('test', $$ MERGE (x:C)-[:A]->(x)
RETURN x $$) as (r agtype);
ERROR: multiple labels for variable 'x' are not supported
LINE 1: ...ELECT * FROM cypher('test', $$ MERGE (x:C)-[:A]->(x) RETURN ...
^
psql-11.5-5432-pgsql=#
```
**Expected behavior**
It should create a vertex with a self loop.
**Environment (please complete the following information):**
current master branch
**Additional context**
None.
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