content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.druid.bvt.sql.oracle;
  
  import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
  import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
  import com.alibaba.druid.sql.test.TestUtils;
  import junit.framework.TestCase;
  
  public class OracleSubqueryFactoringTest extends TestCase {
      public void test_interval() throws Exception {
          String sql = "WITH dept_costs AS (\n"
                  + "SELECT department_name, SUM(salary) dept_total\n"
                  + "FROM employees e, departments d\n"
                  + "WHERE e.department_id = d.department_id\n"
                  + "GROUP BY department_name), "
                  + "avg_cost AS (SELECT SUM(dept_total)/COUNT(*) avg FROM dept_costs)\n"
                  + "SELECT * FROM dept_costs WHERE dept_total > (SELECT avg FROM avg_cost) ORDER BY department_name;";
  
          String expected = "WITH dept_costs AS (\n" +
                  "\t\tSELECT department_name, SUM(salary) AS dept_total\n" +
                  "\t\tFROM employees e, departments d\n" +
                  "\t\tWHERE e.department_id = d.department_id\n" +
                  "\t\tGROUP BY department_name\n" +
                  "\t),\n" +
                  "\tavg_cost AS (\n" +
                  "\t\tSELECT SUM(dept_total) / COUNT(*) AS avg\n" +
                  "\t\tFROM dept_costs\n" +
                  "\t)\n" +
                  "SELECT *\n" +
                  "FROM dept_costs\n" +
                  "WHERE dept_total > (\n" +
                  "\tSELECT avg\n" +
                  "\tFROM avg_cost\n" +
                  ")\n" +
                  "ORDER BY department_name;";
  
          OracleStatementParser parser = new OracleStatementParser(sql);
          SQLSelectStatement stmt = (SQLSelectStatement) parser.parseStatementList().get(0);
  
          String text = TestUtils.outputOracle(stmt);
  
          assertEquals(expected, text);
      }
  }
  