xudong963 commented on code in PR #15954:
URL: https://github.com/apache/datafusion/pull/15954#discussion_r2081994480
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datafusion/physical-plan/src/test/exec.rs:
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@@ -614,6 +614,103 @@ impl ExecutionPlan for StatisticsExec {
}
}
+/// A mock execution plan that returns per-partition statistics
Review Comment:
Maybe you can just create `DataSourceExec` with statistics to do tests.
https://github.com/apache/datafusion/blob/main/datafusion/core/tests/physical_optimizer/partition_statistics.rs#L189
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