alamb commented on code in PR #18054:
URL: https://github.com/apache/datafusion/pull/18054#discussion_r2430401449
##########
datafusion/core/tests/physical_optimizer/filter_pushdown/mod.rs:
##########
@@ -1833,6 +1834,34 @@ STORED AS PARQUET;
// Pushdown pruned most rows
}
+#[test]
+fn test_filter_pushdown_through_union() {
+ let scan1 = TestScanBuilder::new(schema()).with_support(true).build();
+ let scan2 = TestScanBuilder::new(schema()).with_support(true).build();
+
+ let union = UnionExec::try_new(vec![scan1, scan2]).unwrap();
+
+ let predicate = col_lit_predicate("a", "foo", &schema());
+ let plan = Arc::new(FilterExec::try_new(predicate, union).unwrap());
+
+ insta::assert_snapshot!(
+ OptimizationTest::new(plan, FilterPushdown::new(), true),
+ @r"
+ OptimizationTest:
+ input:
+ - FilterExec: a@0 = foo
+ - UnionExec
+ - DataSourceExec: file_groups={1 group: [[test.parquet]]},
projection=[a, b, c], file_type=test, pushdown_supported=true
+ - DataSourceExec: file_groups={1 group: [[test.parquet]]},
projection=[a, b, c], file_type=test, pushdown_supported=true
+ output:
+ Ok:
+ - UnionExec
+ - DataSourceExec: file_groups={1 group: [[test.parquet]]},
projection=[a, b, c], file_type=test, pushdown_supported=true, predicate=a@0 =
foo
Review Comment:
nice!
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