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fix(spark): output columns of expand relation #310

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Oct 25, 2024
Merged

fix(spark): output columns of expand relation #310

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7 changes: 5 additions & 2 deletions spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -224,9 +224,12 @@ class ToLogicalPlan(spark: SparkSession) extends DefaultRelVisitor[LogicalPlan]
throw new UnsupportedOperationException("ConsistentField not currently supported")
}

val output = projections.head
// An output column is nullable if any of the projections can assign null to it
val types = projections.transpose.map(p => (p.head.dataType, p.exists(_.nullable)))

val output = types
.zip(names)
.map { case (t, name) => StructField(name, t.dataType, t.nullable) }
.map { case (t, name) => StructField(name, t._1, t._2) }
.map(f => AttributeReference(f.name, f.dataType, f.nullable, f.metadata)())

Expand(projections, output, child)
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2 changes: 1 addition & 1 deletion spark/src/test/scala/io/substrait/spark/TPCDSPlan.scala
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Expand Up @@ -33,7 +33,7 @@ class TPCDSPlan extends TPCDSBase with SubstraitPlanTestBase {

// spotless:off
val successfulSQL: Set[String] = Set("q1", "q3", "q4", "q7",
"q11", "q13", "q14b", "q15", "q16", "q18", "q19",
"q11", "q13", "q14a", "q14b", "q15", "q16", "q18", "q19",
"q21", "q22", "q23a", "q23b", "q24a", "q24b", "q25", "q26", "q28", "q29",
"q30", "q31", "q32", "q33", "q37", "q38",
"q40", "q41", "q42", "q43", "q46", "q48",
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