alamb commented on a change in pull request #409:
URL: https://github.com/apache/arrow-datafusion/pull/409#discussion_r637932340
##########
File path: datafusion/src/optimizer/filter_push_down.rs
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@@ -1037,6 +1045,23 @@ mod tests {
Ok(())
}
+ #[test]
+ fn filter_with_table_provider_multiple_invocations() -> Result<()> {
+ let plan =
+
table_scan_with_pushdown_provider(TableProviderFilterPushDown::Inexact)?;
+
+ let optimised_plan = optimize_plan(&plan);
+
+ let expected = "\
+ Filter: #a Eq Int64(1)\
+ \n TableScan: projection=None, filters=[#a Eq Int64(1)]";
+
+ // Optimizing the same plan multiple times should produce the same plan
+ // each time.
+ assert_optimized_plan_eq(&optimised_plan, expected);
Review comment:
👍
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