content: /*
   * Copyright 1999-2017 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.select;
  
  import com.alibaba.druid.sql.OracleTest;
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
  import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleSchemaStatVisitor;
  
  import java.util.List;
  
  public class OracleSelectTest94 extends OracleTest {
      public void test_0() throws Exception {
          String sql = //
                  "select * from (\n" +
                          " select times_purchased as \"puchase frequency\", state_code\n" +
                          " from customers t\n" +
                          " )\n" +
                          " pivot xml\n" +
                          " (\n" +
                          " count(state_code)\n" +
                          " for state_code in (select state_code from preferred_states)\n" +
                          " )\n" +
                          " order by 1";
  
          System.out.println(sql);
  
          OracleStatementParser parser = new OracleStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
          SQLSelectStatement stmt = (SQLSelectStatement) statementList.get(0);
          System.out.println(stmt.toString());
  
          assertEquals(1, statementList.size());
  
          OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
          stmt.accept(visitor);
  
          {
              String text = SQLUtils.toOracleString(stmt);
  
              assertEquals("SELECT *\n" +
                      "FROM (\n" +
                      "\tSELECT times_purchased AS \"puchase frequency\", state_code\n" +
                      "\tFROM customers t\n" +
                      ")\n" +
                      "PIVOT XML (count(state_code) FOR state_code IN (\n" +
                      "\tSELECT state_code\n" +
                      "\tFROM preferred_states))\n" +
                      "ORDER BY 1", text);
          }
  
          System.out.println("Tables : " + visitor.getTables());
          System.out.println("fields : " + visitor.getColumns());
          System.out.println("coditions : " + visitor.getConditions());
          System.out.println("relationships : " + visitor.getRelationships());
          System.out.println("orderBy : " + visitor.getOrderByColumns());
  
          assertEquals(2, visitor.getTables().size());
          assertEquals(3, visitor.getColumns().size());
          assertEquals(0, visitor.getConditions().size());
          assertEquals(0, visitor.getRelationships().size());
          assertEquals(0, visitor.getOrderByColumns().size());
      }
  }
  