haohuaijin commented on code in PR #20145:
URL: https://github.com/apache/datafusion/pull/20145#discussion_r2764663514
##########
datafusion/core/tests/physical_optimizer/filter_pushdown.rs:
##########
@@ -1808,6 +1808,67 @@ fn test_filter_pushdown_through_union() {
);
}
+#[test]
+fn test_filter_pushdown_through_union_mixed_support() {
+ // Test case where one child supports filter pushdown and one doesn't
+ let scan1 = TestScanBuilder::new(schema()).with_support(true).build();
+ let scan2 = TestScanBuilder::new(schema()).with_support(false).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=false
+ output:
+ Ok:
+ - UnionExec
+ - DataSourceExec: file_groups={1 group: [[test.parquet]]},
projection=[a, b, c], file_type=test, pushdown_supported=true, predicate=a@0 =
foo
+ - FilterExec: a@0 = foo
+ - DataSourceExec: file_groups={1 group: [[test.parquet]]},
projection=[a, b, c], file_type=test, pushdown_supported=false
Review Comment:
added in
https://github.com/apache/datafusion/pull/20145/changes#diff-cc932d43efc8c2d251d018ecaa22d7e898b4da64d5f216c08a089e13cecfb67f
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