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From jacques-n <...@git.apache.org>
Subject [GitHub] drill pull request: DRILL-3232: Handle promoting writers and vecto...
Date Fri, 30 Oct 2015 05:11:59 GMT
Github user jacques-n commented on a diff in the pull request:

    --- 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

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