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Posted to dev@calcite.apache.org by "xzh_dz (Jira)" <ji...@apache.org> on 2020/09/12 08:25:00 UTC

[jira] [Created] (CALCITE-4251) Overload RelMetadataQuery#getColumnOrigin method

xzh_dz created CALCITE-4251:
-------------------------------

             Summary: Overload RelMetadataQuery#getColumnOrigin method
                 Key: CALCITE-4251
                 URL: https://issues.apache.org/jira/browse/CALCITE-4251
             Project: Calcite
          Issue Type: Wish
            Reporter: xzh_dz


A case:

 
{code:java}
// 
select col1, col2 , sum(count_col4) as sum_col4 
from (
  select col1, col2, col3, count(col4) as count_col4   
  from tbl   
  group by col1, col2, col3
)
group by col1, col2
{code}
When i try to get the `sum_col4` origin column field,it will return null and it is derived. we always get the origin column although it is derived. We should overload this method.

 

 

 



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