Xuanwo opened a new pull request, #23831: URL: https://github.com/apache/datafusion/pull/23831
## Which issue does this PR close? - Part of #318. - Umbrella PR: #23738. - Depends on #23829 (and transitively #23828). ## Rationale for this change This is the DataFrame API layer of the ASOF JOIN stack. It exposes the logical contract through the fluent API without coupling that API review to SQL parsing or protobuf changes. GitHub shows the cumulative stack because fork branches cannot be selected as upstream PR bases. The isolated diff for this layer is: https://github.com/Xuanwo/datafusion/compare/xuanwo/asof-logical...xuanwo/asof-dataframe ## What changes are included in this PR? - Add `DataFrame::join_asof` for expression-based equality keys. - Add `DataFrame::join_asof_using` for same-named equality keys. - Export `AsOfMatch` and `Operator` from the DataFusion prelude. - Add a DataFrame-only execution test that does not depend on SQL syntax. ## Are these changes tested? Yes: - `cargo fmt --all` - `cargo clippy --all-targets --all-features -- -D warnings` - `cargo test -p datafusion --test core_integration dataframe::join_asof --all-features` - Extended workspace tests from the contributor guide ## Are there any user-facing changes? Users can build ASOF joins through `DataFrame::join_asof` and `DataFrame::join_asof_using`. This PR should be reviewed and merged after #23829. After its dependencies squash-merge, this branch will be refreshed from `main` without rewriting its published history. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
