/*
* Copyright 1999-2011 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.visitor;
import java.util.List;
import org.junit.Assert;
import junit.framework.TestCase;
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 com.alibaba.druid.stat.TableStat.Column;
public class MySqlSchemaStatVisitorTest_Subquery2 extends TestCase {
public void test_0() throws Exception {
String sql = "SELECT a.id, a.name, b.name groupName FROM (select id, name, groupId from users limit 10) a inner join groups b on a.groupId = b.id";
MySqlStatementParser parser = new MySqlStatementParser(sql);
List<SQLStatement> statementList = parser.parseStatementList();
SQLStatement statemen = statementList.get(0);
Assert.assertEquals(1, statementList.size());
MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
statemen.accept(visitor);
System.out.println(sql);
System.out.println("Tables : " + visitor.getTables());
System.out.println("fields : " + visitor.getColumns());
Assert.assertEquals(2, visitor.getTables().size());
Assert.assertEquals(true, visitor.containsTable("users"));
Assert.assertEquals(true, visitor.containsTable("groups"));
Assert.assertEquals(5, visitor.getColumns().size());
Assert.assertEquals(true, visitor.getColumns().contains(new Column("users", "id")));
Assert.assertEquals(true, visitor.getColumns().contains(new Column("users", "groupId")));
Assert.assertEquals(true, visitor.getColumns().contains(new Column("users", "name")));
Assert.assertEquals(true, visitor.getColumns().contains(new Column("groups", "id")));
Assert.assertEquals(true, visitor.getColumns().contains(new Column("groups", "name")));
}
}