jayzhan211 commented on code in PR #15685:
URL: https://github.com/apache/datafusion/pull/15685#discussion_r2040450375
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datafusion/physical-expr/src/expressions/dynamic_filters.rs:
##########
@@ -335,22 +313,12 @@ mod test {
]));
// Each ParquetExec calls `with_new_children` on the
DynamicFilterPhysicalExpr
// and remaps the children to the file schema.
- let dynamic_filter_1 = reassign_predicate_columns(
- Arc::clone(&dynamic_filter) as Arc<dyn PhysicalExpr>,
- &filter_schema_1,
- false,
- )
- .unwrap();
- let snap = dynamic_filter_1.snapshot().unwrap().unwrap();
- insta::assert_snapshot!(format!("{snap:?}"), @r#"BinaryExpr { left:
Column { name: "a", index: 0 }, op: Eq, right: Literal { value: Int32(42) },
fail_on_overflow: false }"#);
- let dynamic_filter_2 = reassign_predicate_columns(
- Arc::clone(&dynamic_filter) as Arc<dyn PhysicalExpr>,
- &filter_schema_2,
- false,
- )
- .unwrap();
- let snap = dynamic_filter_2.snapshot().unwrap().unwrap();
- insta::assert_snapshot!(format!("{snap:?}"), @r#"BinaryExpr { left:
Column { name: "a", index: 1 }, op: Eq, right: Literal { value: Int32(42) },
fail_on_overflow: false }"#);
+ let dynamic_filter_1 =
dynamic_filter.with_schema(Arc::clone(&filter_schema_1));
+ let snap_1 = dynamic_filter_1.snapshot().unwrap().unwrap();
+ insta::assert_snapshot!(format!("{snap_1:?}"), @r#"BinaryExpr { left:
Column { name: "a", index: 0 }, op: Eq, right: Literal { value: Int32(42) },
fail_on_overflow: false }"#);
+ let dynamic_filter_2 =
dynamic_filter.with_schema(Arc::clone(&filter_schema_2));
Review Comment:
When you need `reassign_predicate_columns`, basically it re-project columns
based on the provided schema.
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