srielau opened a new pull request, #57312: URL: https://github.com/apache/spark/pull/57312
## What changes were proposed in this pull request? Add Spark SQL Language Reference documentation for `ASOF JOIN`, based on the SQL reference spec used to implement the feature. - New page: `docs/sql-ref-syntax-qry-select-asof-join.md` (syntax, parameters, semantics, examples) - Cross-links from `JOIN`, `SELECT`, and SQL Syntax index pages - Migration guide note for Spark 4.3 (`spark.sql.join.asofJoin.enabled`, default `false`) This PR is stacked on the ASOF JOIN implementation subtasks (parser, analysis, execution, integration tests, FVT). It should merge after those land, or together if the stack is reviewed as a whole. ## Why are the changes needed? SPARK-58176 tracks user-facing documentation for the new `ASOF JOIN` SQL syntax introduced by the ASOF JOIN feature stack. ## Does this PR introduce _any_ user-facing change? Yes — documentation only. ## How was this patch tested? Docs-only change. Examples follow the SQL reference spec and match the FVT golden-file scenarios. ## Was this patch authored or co-authored using generative AI tooling? Yes, with human review. -- 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]
