/*
* 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.db2;
import java.util.List;
import org.junit.Assert;
import com.alibaba.druid.sql.DB2Test;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.db2.parser.DB2StatementParser;
import com.alibaba.druid.sql.dialect.db2.visitor.DB2SchemaStatVisitor;
import com.alibaba.druid.stat.TableStat;
import com.alibaba.druid.stat.TableStat.Column;
import com.alibaba.druid.util.JdbcConstants;
public class DB2SelectTest_5 extends DB2Test {
public void test_0() throws Exception {
String sql = "SELECT * FROM (SELECT TEMP_TAB.*,ROWNUMBER() OVER() AS IDX FROM (SELECT" //
+ " DISTINCT ( OH.ORDER_ID )" //
+ " FROM" //
+ " ORDER_HEADER OH," //
+ " ORDER_ITEM OI," //
+ " ORDER_PAYMENT_PERFERENCE OPP," //
+ " ORDER_SHIPMENT_PERFERENCE OSP" //
+ " WHERE" //
+ " OH.ORDER_ID = OI.ORDER_ID" //
+ " AND OH.ORDER_ID = OPP.ORDER_ID" //
+ " AND OH.ORDER_ID = OSP.ORDER_ID" //
+ " " //
+ " AND OH.ORDER_ID = ? ) AS TEMP_TAB ) AS TEMP_TAB_WITH_IDX "//
+ " WHERE TEMP_TAB_WITH_IDX.IDX > 0 AND TEMP_TAB_WITH_IDX.IDX <= 20" //
+ "";
DB2StatementParser parser = new DB2StatementParser(sql);
List<SQLStatement> statementList = parser.parseStatementList();
SQLStatement stmt = statementList.get(0);
print(statementList);
Assert.assertEquals(1, statementList.size());
DB2SchemaStatVisitor visitor = new DB2SchemaStatVisitor();
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());
Assert.assertEquals(4, visitor.getTables().size());
Assert.assertEquals(4, visitor.getColumns().size());
Assert.assertEquals(4, visitor.getConditions().size());
Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("ORDER_HEADER")));
Assert.assertTrue(visitor.getColumns().contains(new Column("ORDER_HEADER", "ORDER_ID")));
// Assert.assertTrue(visitor.getColumns().contains(new Column("mytable", "first_name")));
// Assert.assertTrue(visitor.getColumns().contains(new Column("mytable", "full_name")));
String output = SQLUtils.toSQLString(stmt, JdbcConstants.DB2);
Assert.assertEquals("SELECT *"//
+ "\nFROM (SELECT TEMP_TAB.*, ROWNUMBER() OVER () AS IDX"//
+ "\n\tFROM (SELECT DISTINCT OH.ORDER_ID"//
+ "\n\t\tFROM ORDER_HEADER OH, ORDER_ITEM OI, ORDER_PAYMENT_PERFERENCE OPP, ORDER_SHIPMENT_PERFERENCE OSP"//
+ "\n\t\tWHERE OH.ORDER_ID = OI.ORDER_ID"//
+ "\n\t\t\tAND OH.ORDER_ID = OPP.ORDER_ID"//
+ "\n\t\t\tAND OH.ORDER_ID = OSP.ORDER_ID"//
+ "\n\t\t\tAND OH.ORDER_ID = ?"//
+ "\n\t\t) TEMP_TAB"//
+ "\n\t) TEMP_TAB_WITH_IDX"//
+ "\nWHERE TEMP_TAB_WITH_IDX.IDX > 0"//
+ "\n\tAND TEMP_TAB_WITH_IDX.IDX <= 20", //
output);
}
}