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The following commit(s) were added to refs/heads/master by this push: new 1c8526d [SPARK-28093][FOLLOW-UP] Remove migration guide of TRIM changes 1c8526d is described below commit 1c8526dc87212b7a51fddf5f180bc8387805e4d0 Author: gatorsmile <gatorsm...@gmail.com> AuthorDate: Fri Mar 13 11:45:59 2020 +0900 [SPARK-28093][FOLLOW-UP] Remove migration guide of TRIM changes ### What changes were proposed in this pull request? Since we reverted the original change in https://github.com/apache/spark/pull/27540, this PR is to remove the corresponding migration guide made in the commit https://github.com/apache/spark/pull/24948 ### Why are the changes needed? N/A ### Does this PR introduce any user-facing change? N/A ### How was this patch tested? N/A Closes #27896 from gatorsmile/SPARK-28093Followup. Authored-by: gatorsmile <gatorsm...@gmail.com> Signed-off-by: HyukjinKwon <gurwls...@apache.org> --- docs/sql-migration-guide.md | 2 -- 1 file changed, 2 deletions(-) diff --git a/docs/sql-migration-guide.md b/docs/sql-migration-guide.md index 468dcdb..7cca43e 100644 --- a/docs/sql-migration-guide.md +++ b/docs/sql-migration-guide.md @@ -34,8 +34,6 @@ license: | - Since Spark 3.0, configuration `spark.sql.crossJoin.enabled` become internal configuration, and is true by default, so by default spark won't raise exception on sql with implicit cross join. - - Since Spark 3.0, we reversed argument order of the trim function from `TRIM(trimStr, str)` to `TRIM(str, trimStr)` to be compatible with other databases. - - In Spark version 2.4 and earlier, SQL queries such as `FROM <table>` or `FROM <table> UNION ALL FROM <table>` are supported by accident. In hive-style `FROM <table> SELECT <expr>`, the `SELECT` clause is not negligible. Neither Hive nor Presto support this syntax. Therefore we will treat these queries as invalid since Spark 3.0. - Since Spark 3.0, the Dataset and DataFrame API `unionAll` is not deprecated any more. It is an alias for `union`. --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@spark.apache.org For additional commands, e-mail: commits-h...@spark.apache.org