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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/11/11 12:30:28 UTC

[GitHub] [arrow-datafusion] jackwener opened a new issue, #4174: `ProjectionPushDown` rule don't consider the alias in projection.

jackwener opened a new issue, #4174:
URL: https://github.com/apache/arrow-datafusion/issues/4174

   **Describe the bug**
   > It's from #4141 
   
   pushdown project rule don't handle alias. In fact, when handle projection with alias, we need replace the alias column in new_required_columns, but if we see the code of this rule, we can find that it didn't consider alias.
   
   For example:
   
   project c1 as c2
       tablescan c1.
   when we meet project c1 as c2, if new_required_columns include c2, we need replace it with c1.
   
   **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] alamb closed issue #4174: `ProjectionPushDown` rule don't consider the alias in projection.

Posted by GitBox <gi...@apache.org>.
alamb closed issue #4174: `ProjectionPushDown` rule don't consider the alias in projection.
URL: https://github.com/apache/arrow-datafusion/issues/4174


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[GitHub] [arrow-datafusion] liukun4515 commented on issue #4174: `ProjectionPushDown` rule don't consider the alias in projection.

Posted by GitBox <gi...@apache.org>.
liukun4515 commented on issue #4174:
URL: https://github.com/apache/arrow-datafusion/issues/4174#issuecomment-1312961269

   @jackwener related issue: https://github.com/apache/arrow-datafusion/issues/3635


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