adriangb commented on code in PR #15764:
URL: https://github.com/apache/datafusion/pull/15764#discussion_r2051557860
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datafusion/physical-optimizer/src/pruning.rs:
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@@ -1215,8 +1215,33 @@ fn is_compare_op(op: Operator) -> bool {
// For example, casts from string to numbers is not correct.
// Because the "13" is less than "3" with UTF8 comparison order.
fn verify_support_type_for_prune(from_type: &DataType, to_type: &DataType) ->
Result<()> {
- // TODO: support other data type for prunable cast or try cast
- if matches!(
+ // Dictionary casts are always supported as long as the value types are
supported
Review Comment:
Thank you @etseidl, I'll implement that instead. I think we do need to keep
the dict part in here.
Tangential but do any of you know where we have functionality to
simplify/adapt a PhysicalExpr given a schema eg to remove unnecessary casts or
add cases where necessary?
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