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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/03/25 04:43:09 UTC

[GitHub] [arrow-datafusion] Ted-Jiang opened a new issue #2083: Error occurs when using union in query

Ted-Jiang opened a new issue #2083:
URL: https://github.com/apache/arrow-datafusion/issues/2083


   **Describe the bug**
   in pg
   ```
   postgres=# select 1 union select 2;
    ?column?
   ----------
           1
           2
   (2 rows)
   ```
   in df
   ```
   ❯ select 1;
   +----------+
   | Int64(1) |
   +----------+
   | 1        |
   +----------+
   1 row in set. Query took 0.002 seconds.
   ❯ select 2;
   +----------+
   | Int64(2) |
   +----------+
   | 2        |
   +----------+
   1 row in set. Query took 0.001 seconds.
   ❯ select 1 union select 2;
   Plan("UNION ALL schemas are expected to be the same")
   
   ```
   I think there two problems:
   1. can not get result.
   2. use `union` but get `UNION ALL`: i think they are totaly different 
   
   related to #2032 
   **To Reproduce**
   Steps to reproduce the behavior:
   
   **Expected behavior**
   A clear and concise description of what you expected to happen.
   
   **Additional context**
   Add any other context about the problem here.
   


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[GitHub] [arrow-datafusion] Ted-Jiang commented on issue #2083: Error occurs when using union in query

Posted by GitBox <gi...@apache.org>.
Ted-Jiang commented on issue #2083:
URL: https://github.com/apache/arrow-datafusion/issues/2083#issuecomment-1078651896


   I will try to fix this😊


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[GitHub] [arrow-datafusion] xudong963 commented on issue #2083: Error occurs when using union in query

Posted by GitBox <gi...@apache.org>.
xudong963 commented on issue #2083:
URL: https://github.com/apache/arrow-datafusion/issues/2083#issuecomment-1078728831


   @Ted-Jiang I think there is a duplicate issue: https://github.com/apache/arrow-datafusion/issues/1818


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[GitHub] [arrow-datafusion] Ted-Jiang commented on issue #2083: Error occurs when using union in query

Posted by GitBox <gi...@apache.org>.
Ted-Jiang commented on issue #2083:
URL: https://github.com/apache/arrow-datafusion/issues/2083#issuecomment-1078758843


   > @Ted-Jiang I think there is a duplicate issue: #1818
   
   Thanks for your info❤️


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