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Posted to dev@age.apache.org by GitBox <gi...@apache.org> on 2021/08/17 12:26:19 UTC

[GitHub] [incubator-age] Misterion777 opened a new issue #105: List comprehensions

Misterion777 opened a new issue #105:
URL: https://github.com/apache/incubator-age/issues/105


   Hey, 
   are list comprehensions supported in AGE?
   Using syntax from Neo4j doesnt seem to work, simple example:
   ```
   SELECT * FROM cypher('g1', $$
   MATCH (v)
   RETURN [x in v.array_field]
   $$) as (a agtype);
   ```


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[GitHub] [incubator-age] Misterion777 commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Misterion777 commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900345053


   > You mean that this query(array_field) is working or not with AGE?
   > 
   > I tried that query. Once it works as 'query' (return as jsonb from Pgadmin).
   > 
   > But I'm not sure this result is correct(Because it returns null).
   > 
   > Someone who knows this issue?
   
   array_field is some random array which is an attribute of a graph vertex.
   i'm trying it with AGE and receiving following error:
   ```
   ERROR:  variable `x` does not exist
   LINE 3: RETURN [x in v.test_ids]
   ```
   


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[GitHub] [incubator-age] Halkrine commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Halkrine commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900817895


   Understood.
   
   Maybe, that function is not supported yet now..


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[GitHub] [incubator-age] Halkrine commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Halkrine commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900357776


   replace x -> v and try it.


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[GitHub] [incubator-age] JoshInnis commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
JoshInnis commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-901233708


   Hi, List Comprehensions are not currently supported


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[GitHub] [incubator-age] Misterion777 edited a comment on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Misterion777 edited a comment on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900345053


   > You mean that this query(array_field) is working or not with AGE?
   > 
   > I tried that query. Once it works as 'query' (return as jsonb from Pgadmin).
   > 
   > But I'm not sure this result is correct(Because it returns null).
   > 
   > Someone who knows this issue?
   
   array_field is some random array which is an attribute of a graph vertex.
   i'm trying it with AGE and receiving following error:
   ```
   ERROR:  variable `x` does not exist
   LINE 3: RETURN [x in v.array_field]
   ```
   


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[GitHub] [incubator-age] Misterion777 commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Misterion777 commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900362053


   > replace x -> v and try it.
   
   no, it should be another variable: it should iterate through the array like in any list comprehension


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[GitHub] [incubator-age] Halkrine commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Halkrine commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900340370


   You mean that this query(array_field) is working or not with AGE?
   
   I tried that query. Once it works as 'query' (return as jsonb from Pgadmin). 
   
   But I'm not sure this result is correct(Because it returns null). 
   
   
   Someone who knows this issue?


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[GitHub] [incubator-age] JoshInnis commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
JoshInnis commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-901233708


   Hi, List Comprehensions are not currently supported


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[GitHub] [incubator-age] Halkrine commented on issue #105: List comprehensions

Posted by GitBox <gi...@apache.org>.
Halkrine commented on issue #105:
URL: https://github.com/apache/incubator-age/issues/105#issuecomment-900817895


   Understood.
   
   Maybe, that function is not supported yet now..


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