sunchao commented on code in PR #37749:
URL: https://github.com/apache/spark/pull/37749#discussion_r961777107
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/V2ExpressionUtils.scala:
##########
@@ -105,18 +105,27 @@ object V2ExpressionUtils extends SQLConfHelper with
Logging {
TransformExpression(bound, resolvedRefs, Some(numBuckets))
}
}
- case NamedTransform(name, refs)
- if refs.length == 1 && refs.forall(_.isInstanceOf[NamedReference]) =>
Review Comment:
I'm also +1 on the first option. I also tried on my side, and it's possible
to trigger the assertion error with the following example in
`EnsureRequirementsSuite`:
```scala
test("multiple named references in transform") {
val plan1 = DummySparkPlan(
outputPartitioning = KeyGroupedPartitioning(
truncate(exprD, exprA) :: bucket(16, exprB) :: Nil, 4)
)
val plan2 = DummySparkPlan(
outputPartitioning = KeyGroupedPartitioning(
truncate(exprD, exprA) :: bucket(16, exprC) :: Nil, 4)
)
val smjExec = SortMergeJoinExec(
exprD :: exprA :: exprB :: Nil, exprD :: exprA :: exprC :: Nil, Inner,
None, plan1, plan2)
EnsureRequirements.apply(smjExec) match {
case SortMergeJoinExec(_, _, _, _,
SortExec(_, _, DummySparkPlan(_, _, left: KeyGroupedPartitioning, _,
_), _),
SortExec(_, _, DummySparkPlan(_, _, right: KeyGroupedPartitioning,
_, _), _), _) =>
assert(left.expressions === Seq(truncate(exprD, exprA), bucket(16,
exprB)))
assert(right.expressions === Seq(truncate(exprD, exprA), bucket(16,
exprC)))
case other => fail(other.toString)
}
}
```
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