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https://issues.apache.org/jira/browse/DRILL-3232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14981909#comment-14981909
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ASF GitHub Bot commented on DRILL-3232:
---------------------------------------
Github user jacques-n commented on a diff in the pull request:
https://github.com/apache/drill/pull/207#discussion_r43472317
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java
---
@@ -211,6 +212,10 @@ private HashAggregator createAggregatorInternal()
throws SchemaChangeException,
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 --
Let's use UserException.Unsupported
> Modify existing vectors to allow type promotion
> -----------------------------------------------
>
> Key: DRILL-3232
> URL: https://issues.apache.org/jira/browse/DRILL-3232
> Project: Apache Drill
> Issue Type: Sub-task
> Components: Execution - Codegen, Execution - Data Types, Execution -
> Relational Operators, Functions - Drill
> Reporter: Steven Phillips
> Assignee: Hanifi Gunes
> Fix For: 1.3.0
>
>
> Support the ability for existing vectors to be promoted similar to supported
> implicit casting rules.
> For example:
> INT > DOUBLE > STRING > EMBEDDED
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