imback82 commented on a change in pull request #27842: [SPARK-31078][SQL]
Respect aliases in output ordering
URL: https://github.com/apache/spark/pull/27842#discussion_r389331709
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/sources/BucketedReadSuite.scala
##########
@@ -604,6 +604,18 @@ abstract class BucketedReadSuite extends QueryTest with
SQLTestUtils {
}
}
+ test("sort should not be introduced when aliases are used") {
+ withSQLConf(SQLConf.AUTO_BROADCASTJOIN_THRESHOLD.key -> "0") {
+ withTable("t") {
+ df1.repartition(1).write.format("parquet").bucketBy(8,
"i").sortBy("i").saveAsTable("t")
Review comment:
Do you mean something like the following?
```
val t1 = spark.range(10).selectExpr("id as k1").orderBy("k1")
.selectExpr("k1 as k11").orderBy("k11")
val t2 = spark.range(10).selectExpr("id as k2").orderBy("k2")
t1.join(t2, t1("k11") === t2("k2")).explain(true)
```
Extra `Sort` is optimized away, so it doesn't affect the physical plan (no
extra sort).
----------------------------------------------------------------
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.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
