mingmwang commented on code in PR #4043:
URL: https://github.com/apache/arrow-datafusion/pull/4043#discussion_r1012389014
##########
datafusion/physical-expr/src/utils.rs:
##########
@@ -65,6 +74,210 @@ pub fn sort_expr_list_eq_strict_order(
list1.len() == list2.len() && list1.iter().zip(list2.iter()).all(|(e1,
e2)| e1.eq(e2))
}
+/// Assume the predicate is in the form of CNF, split the predicate to a Vec
of PhysicalExprs.
+///
+/// For example, split "a1 = a2 AND b1 <= b2 AND c1 != c2" into ["a1 = a2",
"b1 <= b2", "c1 != c2"]
+///
+pub fn split_predicate(predicate: &Arc<dyn PhysicalExpr>) -> Vec<&Arc<dyn
PhysicalExpr>> {
Review Comment:
Sure.
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