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.db2;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.MysqlTest;
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
  import com.alibaba.druid.util.JdbcConstants;
  
  import java.util.List;
  
  public class DB2SelectTest_hierarchical_1 extends MysqlTest {
      protected final DbType dbType = JdbcConstants.DB2;
  
      public void test_0() throws Exception {
          String sql = "SELECT last_name, employee_id, manager_id, LEVEL\n" +
                  "      FROM employees\n" +
                  "      START WITH employee_id = 100\n" +
                  "      CONNECT BY PRIOR employee_id = manager_id\n" +
                  "      ORDER SIBLINGS BY last_name;";
  
          List<SQLStatement> stmtList = SQLUtils.parseStatements(sql, dbType);
          SQLStatement stmt = stmtList.get(0);
  
          {
              String result = SQLUtils.toSQLString(stmt, dbType);
              assertEquals("SELECT last_name, employee_id, manager_id, LEVEL\n" +
                      "FROM employees\n" +
                      "START WITH employee_id = 100\n" +
                      "CONNECT BY PRIOR employee_id = manager_id\n" +
                      "ORDER SIBLINGS BY last_name;", result);
          }
          {
              String result = SQLUtils.toSQLString(stmt, dbType, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
              assertEquals("select last_name, employee_id, manager_id, LEVEL\n" +
                      "from employees\n" +
                      "start with employee_id = 100\n" +
                      "connect by prior employee_id = manager_id\n" +
                      "order siblings by last_name;", result);
          }
  
          assertEquals(1, stmtList.size());
  
          SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(dbType);
          stmt.accept(visitor);
  
          System.out.println("Tables : " + visitor.getTables());
          System.out.println("fields : " + visitor.getColumns());
          System.out.println("coditions : " + visitor.getConditions());
          System.out.println("orderBy : " + visitor.getOrderByColumns());
  
          assertEquals(1, visitor.getTables().size());
          assertEquals(3, visitor.getColumns().size());
          assertEquals(2, visitor.getConditions().size());
  
          // assertTrue(visitor.getTables().containsKey(new TableStat.Name("t_basic_store")));
      }
  }
  