alamb commented on code in PR #3809:
URL: https://github.com/apache/arrow-datafusion/pull/3809#discussion_r993477430
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datafusion/optimizer/src/utils.rs:
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@@ -68,6 +68,60 @@ pub fn split_conjunction<'a>(predicate: &'a Expr,
predicates: &mut Vec<&'a Expr>
}
}
+/// Combines an array of filter expressions into a single filter expression
+/// consisting of the input filter expressions joined with logical AND.
+/// Returns None if the filters array is empty.
+pub fn combine_filters(filters: &[Expr]) -> Option<Expr> {
Review Comment:
Moved from elsewhere
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datafusion/expr/src/expr_fn.rs:
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@@ -468,60 +468,6 @@ pub fn when(when: Expr, then: Expr) -> CaseBuilder {
CaseBuilder::new(None, vec![when], vec![then], None)
}
-/// Combines an array of filter expressions into a single filter expression
Review Comment:
This code was moved
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