PragyanD commented on issue #339:
URL: https://github.com/apache/age/issues/339#issuecomment-1295112119
> Update regarding the location of the error: The issue may be in the
`cypher_gram.y` file where the `EXISTS` function is defined.
>
> This query works:
>
> ```sql
> SELECT * FROM cypher('test', $$ OPTIONAL MATCH (a)-[:incs]->(c) WHERE
EXISTS((c)<-[:incs]-(a)) RETURN a,c $$) AS (a agtype, c agtype);
> ```
>
> However when `MATCH (a:A) WITH a` is added before the cypher query and `a`
is referenced in the parameter of `EXISTS` function, the query fails. The
grammar is probably not defined accurately for this specific pattern.
>
> Anyone who is also working on this issue is welcome to make a comment on
this.
Nice catch Rafsun! I'll investigate this interaction further.
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