@Test
  public void testCONCATHplSQLFunction() throws Throwable {
    String scriptText = "select CONCAT('a', 'b', NULL, 'c')";
    testScriptFile(scriptText, args(), "abc");
  }
Start up a local Hive Server 2 for these tests
itests/hive-unit/src/test/java/org/apache/hive/beeline/TestHplSqlViaBeeLine.java