alamb commented on a change in pull request #8903:
URL: https://github.com/apache/arrow/pull/8903#discussion_r541906226
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File path: rust/datafusion/src/optimizer/filter_push_down.rs
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@@ -215,13 +215,38 @@ fn issue_filters(
push_down(&state, &plan)
}
+/// converts "A AND B AND C" => [A, B, C]
+fn split_members(predicate: &Expr) -> Vec<&Expr> {
Review comment:
Eventually (as part of some other PR) this code might more naturally
belong in the utils.rs module -- splitting expressions into an AND list is a
common thing to want to do, I think. It would make the code easier to find if
people need it for other optimizations. I feel like I have seen this code
before in DataFusion but I can't find it now...
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