[GitHub] [arrow-datafusion] alamb opened a new issue #560: Pruning on `!=` predicate results in incorrect results

[GitBox <gi...@apache.org>]

alamb opened a new issue #560:
URL: https://github.com/apache/arrow-datafusion/issues/560


   **Describe the bug**
   The logic for pruning on `!=` predicates introduced in https://github.com/apache/arrow-datafusion/pull/544  is incorrect
   
   **To Reproduce**
   Use the pruning logic with a `!=` predicate where the range covers the expression
   
   So like `s != M` where the min/max is `A` -> `Z`. 
   
   **Expected behavior**
   Must check all values in block (as s!=M might be true for every one)
   
   Actual behavior: Pruning logic says we must look at it. 
   
   **Additional context**
   I found this issue when integrating / testing DataFusion into IOx here: https://github.com/influxdata/influxdb_iox/pull/1721#issuecomment-860858033
   


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[GitHub] [arrow-datafusion] alamb closed issue #560: Pruning on `!=` predicate results in incorrect results

[GitBox <gi...@apache.org>]

alamb closed issue #560:
URL: https://github.com/apache/arrow-datafusion/issues/560


   


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