diff options
Diffstat (limited to 'sql/catalyst')
| -rw-r--r-- | sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala index 7e9f47ef21..c4a1f899d8 100644 --- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala @@ -33,7 +33,8 @@ class PlanTest extends FunSuite { * we must normalize them to check if two different queries are identical. */ protected def normalizeExprIds(plan: LogicalPlan) = { - val minId = plan.flatMap(_.expressions.flatMap(_.references).map(_.exprId.id)).min + val list = plan.flatMap(_.expressions.flatMap(_.references).map(_.exprId.id)) + val minId = if (list.isEmpty) 0 else list.min plan transformAllExpressions { case a: AttributeReference => AttributeReference(a.name, a.dataType, a.nullable)(exprId = ExprId(a.exprId.id - minId)) |