Github user jacques-n commented on a diff in the pull request:
https://github.com/apache/drill/pull/207#discussion_r43472340
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
---
@@ -280,6 +281,9 @@ private StreamingAggregator createAggregatorInternal()
throws SchemaChangeExcept
for (int i = 0; i < valueExprs.length; i++) {
final NamedExpression ne = popConfig.getExprs()[i];
final LogicalExpression expr =
ExpressionTreeMaterializer.materialize(ne.getExpr(), incoming, collector,
context.getFunctionRegistry());
+ if (expr instanceof IfExpression) {
+ throw new SchemaChangeException("Union type not supported in
aggregate functions");
--- End diff --
UserException
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
