[GitHub] [arrow-datafusion] Dandandan commented on a diff in pull request #3868: Implement foundational filter selectivity analysis

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

Dandandan commented on code in PR #3868:
URL: https://github.com/apache/arrow-datafusion/pull/3868#discussion_r999687348


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datafusion/core/src/physical_plan/mod.rs:
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@@ -88,36 +89,6 @@ impl Stream for EmptyRecordBatchStream {
 /// Physical planner interface
 pub use self::planner::PhysicalPlanner;
 
-/// Statistics for a physical plan node
-/// Fields are optional and can be inexact because the sources
-/// sometimes provide approximate estimates for performance reasons
-/// and the transformations output are not always predictable.
-#[derive(Debug, Clone, Default, PartialEq, Eq)]
-pub struct Statistics {
-    /// The number of table rows
-    pub num_rows: Option<usize>,
-    /// total bytes of the table rows

Review Comment:
   :+1: 



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