tajo-core/tajo-core-backend/src/test/java/org/apache/tajo/engine/query/TestUnionQuery.java

/**
 * 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.tajo.engine.query;

import org.apache.tajo.IntegrationTest;
import org.apache.tajo.QueryTestCaseBase;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import java.sql.ResultSet;

/*
 * Notations
 * - S - select
 * - SA - select *
 * - U - union
 * - G - group by
 * - O - order by
 */
@Category(IntegrationTest.class)
public class TestUnionQuery extends QueryTestCaseBase {

  @Test
  /**
   * S (SA U SA) O
   */
  public final void testUnion1() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  /**
   * S (S U S) O
   */
  public final void testUnion2() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  /**
   * S O ((S G) U (S G))
   */
  public final void testUnion3() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  /**
   * S G (S G)
   */
  public final void testUnion4() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  /**
   * S G (S F G)
   */
  public final void testUnion5() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  /**
   * S G (SA)
   */
  public final void testUnion6() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  /**
   * S (SA)
   */
  public final void testUnion7() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  public final void testUnion8() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  public final void testUnion9() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  public final void testUnion10() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }

  @Test
  public final void testUnionWithSameAliasNames() throws Exception {
    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);
  }
}