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From "Yusuf (Jira)" <j...@apache.org>
Subject [jira] [Created] (DRILL-7772) When several columns are selected in RDBMS, the drill selects all (*) columns
Date Mon, 27 Jul 2020 07:19:00 GMT
Yusuf created DRILL-7772:
----------------------------

             Summary: When several columns are selected in RDBMS, the drill selects all (*)
columns
                 Key: DRILL-7772
                 URL: https://issues.apache.org/jira/browse/DRILL-7772
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning &amp; Optimization
    Affects Versions: 1.17.0
            Reporter: Yusuf
         Attachments: all column.PNG

 
hi, 
When I select some columns in RDBMS, the drill first selects all (*) columns and then transmits
the columns I selected.
 
This process also fills the NETWORK and memory.
Please, 
In RDBMS, only the columns I select are pushed down.



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