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.mysql.select;
  
  import com.alibaba.druid.sql.MysqlTest;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
  import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
  
  import java.util.List;
  
  public class MySqlSelectTest_206_union extends MysqlTest {
      public void test_0() throws Exception {
          String sql = "SELECT uid FROM (select uid, cid, category, empid from comb_opportunity_sales_relation_online where uid = 1723876714657374)  \n" +
                  "union SELECT uid FROM (select uid, cid, category, empid from comb_opportunity_sales_relation_offline where uid = 1723876714657374) ";
  
          MySqlStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
          SQLStatement stmt = statementList.get(0);
  
          assertEquals(1, statementList.size());
  
          assertEquals("SELECT uid\n" +
                          "FROM (\n" +
                          "\tSELECT uid, cid, category, empid\n" +
                          "\tFROM comb_opportunity_sales_relation_online\n" +
                          "\tWHERE uid = 1723876714657374\n" +
                          ")\n" +
                          "UNION\n" +
                          "SELECT uid\n" +
                          "FROM (\n" +
                          "\tSELECT uid, cid, category, empid\n" +
                          "\tFROM comb_opportunity_sales_relation_offline\n" +
                          "\tWHERE uid = 1723876714657374\n" +
                          ")", //
                  stmt.toString());
  
          MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
          stmt.accept(visitor);
  
          assertEquals(2, visitor.getTables().size());
          assertEquals(8, visitor.getColumns().size());
          assertEquals(2, visitor.getConditions().size());
          assertEquals(0, visitor.getOrderByColumns().size());
      }
  }
  