Changes

Summary

  1. [SPARK-36210][SQL] Preserve column insertion order in (details)
Commit 73645d4562544c94cf42c0d87a12e9438141186d by viirya
[SPARK-36210][SQL] Preserve column insertion order in Dataset.withColumns

### What changes were proposed in this pull request?
Preserve the insertion order of columns in Dataset.withColumns

### Why are the changes needed?
It is the expected behavior. We preserve insertion order in all other places.

### Does this PR introduce _any_ user-facing change?
No. Currently Dataset.withColumns is not actually used anywhere to insert more than one column. This change is to make sure it behaves as expected when it is used for that purpose in future.

### How was this patch tested?
Added test in DatasetSuite

Closes #33423 from koertkuipers/feat-withcolumns-preserve-order.

Authored-by: Koert Kuipers <koert@tresata.com>
Signed-off-by: Liang-Chi Hsieh <viirya@gmail.com>
(cherry picked from commit bf680bf25aae9619d462caee05c41cc33909338a)
Signed-off-by: Liang-Chi Hsieh <viirya@gmail.com>
The file was modifiedsql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala (diff)
The file was modifiedsql/core/src/main/scala/org/apache/spark/sql/Dataset.scala (diff)