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https://issues.apache.org/jira/browse/DRILL-8375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17804074#comment-17804074
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ASF GitHub Bot commented on DRILL-8375:
---------------------------------------
paul-rogers commented on code in PR #2867:
URL: https://github.com/apache/drill/pull/2867#discussion_r1444117648
##########
exec/java-exec/src/test/java/org/apache/drill/exec/physical/resultSet/impl/TestResultSetLoaderUnprojected.java:
##########
@@ -0,0 +1,455 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.drill.exec.physical.resultSet.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.List;
+
+import org.apache.drill.common.expression.SchemaPath;
+import org.apache.drill.common.types.TypeProtos.MinorType;
+import org.apache.drill.exec.physical.resultSet.ResultSetLoader;
+import org.apache.drill.exec.physical.resultSet.RowSetLoader;
+import
org.apache.drill.exec.physical.resultSet.impl.ResultSetLoaderImpl.ResultSetOptions;
+import org.apache.drill.exec.physical.resultSet.project.Projections;
+import org.apache.drill.exec.physical.rowSet.RowSet;
+import org.apache.drill.exec.physical.rowSet.RowSet.SingleRowSet;
+import org.apache.drill.exec.physical.rowSet.RowSetTestUtils;
+import org.apache.drill.exec.record.metadata.SchemaBuilder;
+import org.apache.drill.exec.record.metadata.TupleMetadata;
+import org.apache.drill.exec.vector.accessor.ArrayWriter;
+import org.apache.drill.exec.vector.accessor.ScalarWriter;
+import org.apache.drill.exec.vector.accessor.TupleWriter;
+import org.apache.drill.test.SubOperatorTest;
+import org.apache.drill.test.rowSet.RowSetUtilities;
+import org.junit.Test;
+
+/**
+ * Verify the correct functioning of the "dummy" columns created
+ * for unprojected columns.
+ */
+public class TestResultSetLoaderUnprojected extends SubOperatorTest {
Review Comment:
The UNION type has been discussed for as long as I've been involved in the
project: since 2016. The idea is simple: Drill should be able to read any kind
of JSON, and UNION (plus LIST, etc.) have been essential for this. The problem,
as we've also discussed for a long time, is that UNION barely works, and JDBC
and similar clients can't make sense of it. That is, UNION turned out to be the
wrong solution to the problem.
Still, there is always the hope that UNION can be made to work
> Incomplete support for non-projected complex vectors
> ----------------------------------------------------
>
> Key: DRILL-8375
> URL: https://issues.apache.org/jira/browse/DRILL-8375
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Major
>
> The `ResultSetLoader` implementation supports all of Drill's vector types.
> However, DRILL-8188 discovered holes in support for non-projected vectors.
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