content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * 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.
   */
  /**
   * (created at 2011-5-12)
   */
  package com.alibaba.cobar.parser.recognizer.mysql.syntax;
  
  import java.sql.SQLSyntaxErrorException;
  import java.util.List;
  
  import junit.framework.Assert;
  
  import com.alibaba.cobar.parser.ast.expression.Expression;
  import com.alibaba.cobar.parser.ast.expression.comparison.ComparisionEqualsExpression;
  import com.alibaba.cobar.parser.ast.expression.logical.LogicalAndExpression;
  import com.alibaba.cobar.parser.ast.expression.primary.Identifier;
  import com.alibaba.cobar.parser.ast.expression.primary.ParamMarker;
  import com.alibaba.cobar.parser.ast.fragment.GroupBy;
  import com.alibaba.cobar.parser.ast.fragment.Limit;
  import com.alibaba.cobar.parser.ast.fragment.OrderBy;
  import com.alibaba.cobar.parser.ast.fragment.SortOrder;
  import com.alibaba.cobar.parser.ast.fragment.tableref.IndexHint;
  import com.alibaba.cobar.parser.ast.fragment.tableref.InnerJoin;
  import com.alibaba.cobar.parser.ast.fragment.tableref.NaturalJoin;
  import com.alibaba.cobar.parser.ast.fragment.tableref.OuterJoin;
  import com.alibaba.cobar.parser.ast.fragment.tableref.StraightJoin;
  import com.alibaba.cobar.parser.ast.fragment.tableref.SubqueryFactor;
  import com.alibaba.cobar.parser.ast.fragment.tableref.TableRefFactor;
  import com.alibaba.cobar.parser.ast.fragment.tableref.TableReference;
  import com.alibaba.cobar.parser.ast.fragment.tableref.TableReferences;
  import com.alibaba.cobar.parser.ast.stmt.dml.DMLSelectStatement;
  import com.alibaba.cobar.parser.recognizer.mysql.lexer.MySQLLexer;
  import com.alibaba.cobar.parser.util.ListUtil;
  import com.alibaba.cobar.parser.util.Pair;
  
  /**
   * @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
   */
  public class MySQLDMLParserTest extends AbstractSyntaxTest {
  
      protected MySQLDMLParser getDMLParser(MySQLLexer lexer) {
          MySQLExprParser exp = new MySQLExprParser(lexer);
          MySQLDMLParser parser = new MySQLDMLSelectParser(lexer, exp);
          return parser;
      }
  
      public void testOrderBy() throws SQLSyntaxErrorException {
          String sql = "order by c1 asc, c2 desc  , c3 ";
          MySQLLexer lexer = new MySQLLexer(sql);
          MySQLDMLParser parser = getDMLParser(lexer);
          OrderBy orderBy = parser.orderBy();
          String output = output2MySQL(orderBy, sql);
          ListUtil.isEquals(ListUtil.createList(
                  new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC),
                  new Pair<Expression, SortOrder>(new Identifier(null, "c2"), SortOrder.DESC),
                  new Pair<Expression, SortOrder>(new Identifier(null, "c3"), SortOrder.ASC)), orderBy.getOrderByList());
          Assert.assertEquals("ORDER BY c1, c2 DESC, c3", output);
  
          sql = "order by c1   ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          orderBy = parser.orderBy();
          output = output2MySQL(orderBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC)),
                  orderBy.getOrderByList());
          Assert.assertEquals("ORDER BY c1", output);
  
          sql = "order by c1 asc  ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          orderBy = parser.orderBy();
          output = output2MySQL(orderBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC)),
                  orderBy.getOrderByList());
          Assert.assertEquals("ORDER BY c1", output);
  
          sql = "order by c1 desc  ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          orderBy = parser.orderBy();
          output = output2MySQL(orderBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.DESC)),
                  orderBy.getOrderByList());
          Assert.assertEquals("ORDER BY c1 DESC", output);
      }
  
      public void testLimit() throws SQLSyntaxErrorException {
          String sql = "limit 1,2";
          MySQLLexer lexer = new MySQLLexer(sql);
          MySQLDMLParser parser = getDMLParser(lexer);
          Limit limit = parser.limit();
          String output = output2MySQL(limit, sql);
          Assert.assertEquals(1, limit.getOffset());
          Assert.assertEquals(2, limit.getSize());
          Assert.assertEquals("LIMIT 1, 2", output);
  
          sql = "limit 1,?";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(1, limit.getOffset());
          Assert.assertEquals(new ParamMarker(1), limit.getSize());
          Assert.assertEquals("LIMIT 1, ?", output);
  
          sql = "limit ?,9";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(new ParamMarker(1), limit.getOffset());
          Assert.assertEquals(9, limit.getSize());
          Assert.assertEquals("LIMIT ?, 9", output);
  
          sql = "limit ?,?";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(new ParamMarker(1), limit.getOffset());
          Assert.assertEquals(new ParamMarker(2), limit.getSize());
          Assert.assertEquals("LIMIT ?, ?", output);
  
          sql = "limit ? d";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(0, limit.getOffset());
          Assert.assertEquals(new ParamMarker(1), limit.getSize());
          Assert.assertEquals("LIMIT 0, ?", output);
  
          sql = "limit 9 f";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(0, limit.getOffset());
          Assert.assertEquals(9, limit.getSize());
          Assert.assertEquals("LIMIT 0, 9", output);
  
          sql = "limit 9 ofFset 0";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(0, limit.getOffset());
          Assert.assertEquals(9, limit.getSize());
          Assert.assertEquals("LIMIT 0, 9", output);
  
          sql = "limit ? offset 0";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(0, limit.getOffset());
          Assert.assertEquals(new ParamMarker(1), limit.getSize());
          Assert.assertEquals("LIMIT 0, ?", output);
  
          sql = "limit ? offset ?";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(new ParamMarker(2), limit.getOffset());
          Assert.assertEquals(new ParamMarker(1), limit.getSize());
          Assert.assertEquals("LIMIT ?, ?", output);
  
          sql = "limit 9 offset ?";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          limit = parser.limit();
          output = output2MySQL(limit, sql);
          Assert.assertEquals(new ParamMarker(1), limit.getOffset());
          Assert.assertEquals(9, limit.getSize());
          Assert.assertEquals("LIMIT ?, 9", output);
  
      }
  
      public void testGroupBy() throws SQLSyntaxErrorException {
          String sql = "group by c1 asc, c2 desc  , c3 with rollup";
          MySQLLexer lexer = new MySQLLexer(sql);
          MySQLDMLParser parser = getDMLParser(lexer);
          GroupBy groupBy = parser.groupBy();
          String output = output2MySQL(groupBy, sql);
          ListUtil.isEquals(ListUtil.createList(
                  new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC),
                  new Pair<Expression, SortOrder>(new Identifier(null, "c2"), SortOrder.DESC),
                  new Pair<Expression, SortOrder>(new Identifier(null, "c3"), SortOrder.ASC)), groupBy.getOrderByList());
          Assert.assertEquals("GROUP BY c1, c2 DESC, c3 WITH ROLLUP", output);
  
          sql = "group by c1 asc, c2 desc  , c3 ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          groupBy = parser.groupBy();
          output = output2MySQL(groupBy, sql);
          ListUtil.isEquals(ListUtil.createList(
                  new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC),
                  new Pair<Expression, SortOrder>(new Identifier(null, "c2"), SortOrder.DESC),
                  new Pair<Expression, SortOrder>(new Identifier(null, "c3"), SortOrder.ASC)), groupBy.getOrderByList());
          Assert.assertEquals("GROUP BY c1, c2 DESC, c3", output);
  
          sql = "group by c1   ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          groupBy = parser.groupBy();
          output = output2MySQL(groupBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC)),
                  groupBy.getOrderByList());
          Assert.assertEquals("GROUP BY c1", output);
  
          sql = "group by c1 asc  ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          groupBy = parser.groupBy();
          output = output2MySQL(groupBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC)),
                  groupBy.getOrderByList());
          Assert.assertEquals("GROUP BY c1", output);
  
          sql = "group by c1 desc  ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          groupBy = parser.groupBy();
          output = output2MySQL(groupBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.DESC)),
                  groupBy.getOrderByList());
          Assert.assertEquals("GROUP BY c1 DESC", output);
  
          sql = "group by c1 with rollup  ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          groupBy = parser.groupBy();
          output = output2MySQL(groupBy, sql);
          ListUtil.isEquals(
                  ListUtil.createList(new Pair<Expression, SortOrder>(new Identifier(null, "c1"), SortOrder.ASC)),
                  groupBy.getOrderByList());
          Assert.assertEquals("GROUP BY c1 WITH ROLLUP", output);
      }
  
      public void testTR1() throws SQLSyntaxErrorException {
          String sql = "(select * from `select`) as `select`";
          MySQLLexer lexer = new MySQLLexer(sql);
          MySQLDMLParser parser = getDMLParser(lexer);
          TableReferences trs = parser.tableRefs();
          String output = output2MySQL(trs, sql);
          List<TableReference> list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(SubqueryFactor.class, list.get(0).getClass());
          Assert.assertEquals("(SELECT * FROM `select`) AS `SELECT`", output);
  
          sql = "(((selecT * from any)union select `select` from `from` order by dd) as 'a1', (((t2)))), t3";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(2, list.size());
          Assert.assertEquals(TableReferences.class, list.get(0).getClass());
          Assert.assertEquals(TableRefFactor.class, list.get(1).getClass());
          list = ((TableReferences) list.get(0)).getTableReferenceList();
          Assert.assertEquals(2, list.size());
          Assert.assertEquals(SubqueryFactor.class, list.get(0).getClass());
          Assert.assertEquals(TableReferences.class, list.get(1).getClass());
          Assert.assertEquals(
                  "((SELECT * FROM any) UNION (SELECT `select` FROM `from` ORDER BY dd)) AS 'a1', t2, t3",
                  output);
  
          sql = "(t1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          TableReference tr = list.get(0);
          Assert.assertEquals(TableReferences.class, tr.getClass());
          list = ((TableReferences) tr).getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("t1", output);
  
          sql = "(t1,t2,(t3))";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableReferences.class, list.get(0).getClass());
          tr = (TableReferences) list.get(0);
          Assert.assertEquals(TableReferences.class, tr.getClass());
          list = ((TableReferences) tr).getTableReferenceList();
          Assert.assertEquals(3, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals(TableRefFactor.class, list.get(1).getClass());
          Assert.assertEquals(TableRefFactor.class, list.get(1).getClass());
          Assert.assertEquals("t1, t2, t3", output);
  
          sql = "(tb1 as t1)inner join (tb2 as t2) on t1.name=t2.name";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(InnerJoin.class, list.get(0).getClass());
          tr = ((InnerJoin) list.get(0)).getLeftTableRef();
          Assert.assertEquals(TableReferences.class, tr.getClass());
          list = ((TableReferences) tr).getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Expression ex = ((InnerJoin) (trs.getTableReferenceList()).get(0)).getOnCond();
          Assert.assertEquals(ex.getClass(), ComparisionEqualsExpression.class);
          Assert.assertEquals("(tb1 AS T1) INNER JOIN (tb2 AS T2) ON t1.name = t2.name", output);
  
          sql = "(tb1 as t1)inner join tb2 as t2 using (c1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          List<String> using_list = ((InnerJoin) (trs.getTableReferenceList()).get(0)).getUsing();
          Assert.assertEquals(1, using_list.size());
          Assert.assertEquals("(tb1 AS T1) INNER JOIN tb2 AS T2 USING (c1)", output);
  
          sql = "(tb1 as t1)inner join tb2 as t2 using (c1,c2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          using_list = ((InnerJoin) (trs.getTableReferenceList()).get(0)).getUsing();
          Assert.assertEquals(2, using_list.size());
          Assert.assertEquals("(tb1 AS T1) INNER JOIN tb2 AS T2 USING (c1, c2)", output);
  
          sql = "tb1 as t1 use index (i1,i2,i3)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          List<IndexHint> hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          IndexHint indexhint = hintlist.get(0);
          Assert.assertEquals(3, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("tb1 AS T1 USE INDEX (i1, i2, i3)", output);
  
          sql = "tb1 as t1 use index (i1,i2,i3),tb2 as t2 use index (i1,i2,i3)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(2, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(3, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(1)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(3, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("tb1 AS T1 USE INDEX (i1, i2, i3), tb2 AS T2 USE INDEX (i1, i2, i3)", output);
  
          sql = "tb1 as t1";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals("T1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          Assert.assertEquals("tb1 AS T1", output);
  
          sql = "tb1 t1";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals("T1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          Assert.assertEquals("tb1 AS T1", output);
  
          sql = "tb1,tb2,tb3";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(3, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          Assert.assertEquals("tb2", ((TableRefFactor) (trs.getTableReferenceList()).get(1)).getTable().getIdText());
          Assert.assertEquals("tb3", ((TableRefFactor) (trs.getTableReferenceList()).get(2)).getTable().getIdText());
          Assert.assertEquals("tb1, tb2, tb3", output);
  
          sql = "tb1 use key for join (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("KEY", indexhint.getType().name());
          Assert.assertEquals("JOIN", indexhint.getScope().name());
          Assert.assertEquals("tb1 USE KEY FOR JOIN (i1, i2)", output);
  
          sql = "tb1 use index for group by(i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 USE INDEX FOR GROUP BY (i1, i2)", output);
  
          sql = "tb1 use key for order by (i1,i2) use key for group by () " + "ignore index for group by (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(3, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("KEY", indexhint.getType().name());
          Assert.assertEquals("ORDER_BY", indexhint.getScope().name());
          indexhint = hintlist.get(1);
          Assert.assertEquals(0, indexhint.getIndexList().size());
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("KEY", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          indexhint = hintlist.get(2);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("IGNORE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 USE KEY FOR ORDER BY (i1, i2) "
                  + "USE KEY FOR GROUP BY () IGNORE INDEX FOR GROUP BY (i1, i2)", output);
  
          sql = "tb1 use index for order by (i1,i2) force index for group by (i1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(2, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("ORDER_BY", indexhint.getScope().name());
          indexhint = hintlist.get(1);
          Assert.assertEquals(1, indexhint.getIndexList().size());
          Assert.assertEquals("FORCE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 USE INDEX FOR ORDER BY (i1, i2) FORCE INDEX FOR GROUP BY (i1)", output);
  
          sql = "tb1 ignore key for join (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("IGNORE", indexhint.getAction().name());
          Assert.assertEquals("KEY", indexhint.getType().name());
          Assert.assertEquals("JOIN", indexhint.getScope().name());
          Assert.assertEquals("tb1 IGNORE KEY FOR JOIN (i1, i2)", output);
  
          sql = "tb1 ignore index for group by (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("IGNORE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 IGNORE INDEX FOR GROUP BY (i1, i2)", output);
  
          sql = "(offer  a  straight_join wp_image b use key for join(t1,t2) on a.member_id=b.member_id inner join product_visit c )";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals(
                  "offer AS A STRAIGHT_JOIN wp_image AS B USE KEY FOR JOIN (t1, t2) ON a.member_id = b.member_id INNER JOIN product_visit AS C",
                  output);
  
          sql = "tb1 ignore index for order by(i1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(1, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("IGNORE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("ORDER_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 IGNORE INDEX FOR ORDER BY (i1)", output);
  
          sql = "tb1 force key for group by (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("FORCE", indexhint.getAction().name());
          Assert.assertEquals("KEY", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 FORCE KEY FOR GROUP BY (i1, i2)", output);
  
          sql = "tb1 force index for group by (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("FORCE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("GROUP_BY", indexhint.getScope().name());
          Assert.assertEquals("tb1 FORCE INDEX FOR GROUP BY (i1, i2)", output);
  
          sql = "tb1 force index for join (i1,i2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals("tb1", ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getTable().getIdText());
          Assert.assertEquals(null, ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getAlias());
          hintlist = ((TableRefFactor) (trs.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("FORCE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("JOIN", indexhint.getScope().name());
          Assert.assertEquals("tb1 FORCE INDEX FOR JOIN (i1, i2)", output);
  
          sql = "(tb1 force index for join (i1,i2) )left outer join tb2 as t2 " + "use index (i1,i2,i3) on t1.id1=t2.id1";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(OuterJoin.class, list.get(0).getClass());
          Assert.assertEquals(true, (((OuterJoin) list.get(0)).isLeftJoin()));
          TableReferences ltr = (TableReferences) ((OuterJoin) list.get(0)).getLeftTableRef();
          Assert.assertEquals(1, ltr.getTableReferenceList().size());
          Assert.assertEquals(TableRefFactor.class, ltr.getTableReferenceList().get(0).getClass());
          Assert.assertEquals(null, ((TableRefFactor) (ltr.getTableReferenceList().get(0))).getAlias());
          Assert.assertEquals("tb1", ((TableRefFactor) (ltr.getTableReferenceList().get(0))).getTable().getIdText());
          hintlist = ((TableRefFactor) (ltr.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("FORCE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("JOIN", indexhint.getScope().name());
          TableRefFactor rtf = (TableRefFactor) ((OuterJoin) list.get(0)).getRightTableRef();
          Assert.assertEquals("T2", rtf.getAlias());
          Assert.assertEquals("tb2", rtf.getTable().getIdText());
          hintlist = rtf.getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(3, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("ALL", indexhint.getScope().name());
          Assert.assertEquals(ComparisionEqualsExpression.class, ((OuterJoin) list.get(0)).getOnCond().getClass());
          Assert.assertEquals("(tb1 FORCE INDEX FOR JOIN (i1, i2)) "
                  + "LEFT JOIN tb2 AS T2 USE INDEX (i1, i2, i3) ON t1.id1 = t2.id1", output);
  
          sql = " (((tb1 force index for join (i1,i2),tb3),tb4),tb5) "
                  + "left outer join (tb2 as t2 use index (i1,i2,i3)) using(id1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(OuterJoin.class, list.get(0).getClass());
          Assert.assertEquals(true, (((OuterJoin) list.get(0)).isLeftJoin()));
          ltr = (TableReferences) ((OuterJoin) list.get(0)).getLeftTableRef();
          Assert.assertEquals(2, ltr.getTableReferenceList().size());
          Assert.assertEquals(TableReferences.class, ltr.getTableReferenceList().get(0).getClass());
          TableReferences ltr1 = (TableReferences) (ltr.getTableReferenceList()).get(0);
          Assert.assertEquals(2, ltr1.getTableReferenceList().size());
          Assert.assertEquals(TableReferences.class, ltr1.getTableReferenceList().get(0).getClass());
          TableReferences ltr2 = (TableReferences) (ltr1.getTableReferenceList()).get(0);
          Assert.assertEquals(2, ltr2.getTableReferenceList().size());
          Assert.assertEquals(TableRefFactor.class, ltr2.getTableReferenceList().get(0).getClass());
          Assert.assertEquals(null, ((TableRefFactor) (ltr2.getTableReferenceList().get(0))).getAlias());
          Assert.assertEquals("tb1", ((TableRefFactor) (ltr2.getTableReferenceList().get(0))).getTable().getIdText());
          hintlist = ((TableRefFactor) (ltr2.getTableReferenceList()).get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(2, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("FORCE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("JOIN", indexhint.getScope().name());
          Assert.assertEquals(TableRefFactor.class, ltr2.getTableReferenceList().get(1).getClass());
          Assert.assertEquals("tb3", ((TableRefFactor) (ltr2.getTableReferenceList().get(1))).getTable().getIdText());
          Assert.assertEquals(TableRefFactor.class, ltr1.getTableReferenceList().get(1).getClass());
          Assert.assertEquals("tb4", ((TableRefFactor) (ltr1.getTableReferenceList().get(1))).getTable().getIdText());
          Assert.assertEquals(TableRefFactor.class, ltr.getTableReferenceList().get(1).getClass());
          Assert.assertEquals("tb5", ((TableRefFactor) (ltr.getTableReferenceList().get(1))).getTable().getIdText());
          TableReferences rtr = (TableReferences) ((OuterJoin) list.get(0)).getRightTableRef();
          Assert.assertEquals("T2", ((TableRefFactor) rtr.getTableReferenceList().get(0)).getAlias());
          Assert.assertEquals("tb2", ((TableRefFactor) rtr.getTableReferenceList().get(0)).getTable().getIdText());
          hintlist = ((TableRefFactor) rtr.getTableReferenceList().get(0)).getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals(3, indexhint.getIndexList().size());
          Assert.assertEquals("i1", indexhint.getIndexList().get(0));
          Assert.assertEquals("i2", indexhint.getIndexList().get(1));
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("ALL", indexhint.getScope().name());
          using_list = ((OuterJoin) (trs.getTableReferenceList()).get(0)).getUsing();
          Assert.assertEquals(1, using_list.size());
          Assert.assertEquals("(tb1 FORCE INDEX FOR JOIN (i1, i2), tb3, tb4, tb5) "
                  + "LEFT JOIN (tb2 AS T2 USE INDEX (i1, i2, i3)) USING (id1)", output);
  
          sql = "(tb1 force index for join (i1,i2),tb3) "
                  + "left outer join tb2 as t2 use index (i1,i2,i3) using(id1,id2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("(tb1 FORCE INDEX FOR JOIN (i1, i2), tb3) "
                  + "LEFT JOIN tb2 AS T2 USE INDEX (i1, i2, i3) USING (id1, id2)", output);
  
          sql = "(tb1 force index for join (i1,i2),tb3) left outer join (tb2 as t2 use index (i1,i2,i3)) using(id1,id2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("(tb1 FORCE INDEX FOR JOIN (i1, i2), tb3) "
                  + "LEFT JOIN (tb2 AS T2 USE INDEX (i1, i2, i3)) USING (id1, id2)", output);
  
          sql = "tb1 as t1 cross join tb2 as t2 use index(i1)using(id1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 AS T1 INNER JOIN tb2 AS T2 USE INDEX (i1) USING (id1)", output);
  
          sql = "(tb1 as t1) cross join tb2 as t2 use index(i1)using(id1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("(tb1 AS T1) INNER JOIN tb2 AS T2 USE INDEX (i1) USING (id1)", output);
  
          sql = "tb1 as _latin't1' cross join tb2 as t2 use index(i1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 AS _LATIN't1' INNER JOIN tb2 AS T2 USE INDEX (i1)", output);
  
          sql = "((select '  @  from' from `from`)) as t1 cross join tb2 as t2 use index()";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(InnerJoin.class, list.get(0).getClass());
          SubqueryFactor lsf = (SubqueryFactor) ((InnerJoin) list.get(0)).getLeftTableRef();
          Assert.assertEquals("T1", lsf.getAlias());
          Assert.assertEquals(DMLSelectStatement.class, lsf.getSubquery().getClass());
          rtf = (TableRefFactor) ((InnerJoin) list.get(0)).getRightTableRef();
          Assert.assertEquals("T2", rtf.getAlias());
          hintlist = rtf.getHintList();
          Assert.assertEquals(1, hintlist.size());
          indexhint = hintlist.get(0);
          Assert.assertEquals("USE", indexhint.getAction().name());
          Assert.assertEquals("INDEX", indexhint.getType().name());
          Assert.assertEquals("ALL", indexhint.getScope().name());
          Assert.assertEquals("tb2", rtf.getTable().getIdText());
          Assert.assertEquals("(SELECT '  @  from' FROM `from`) AS T1 " + "INNER JOIN tb2 AS T2 USE INDEX ()", output);
  
          sql = "(tb1 as t1) straight_join (tb2 as t2)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("(tb1 AS T1) STRAIGHT_JOIN (tb2 AS T2)", output);
  
          sql = "tb1 straight_join tb2 as t2 on tb1.id=tb2.id";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 STRAIGHT_JOIN tb2 AS T2 ON tb1.id = tb2.id", output);
  
          sql = "tb1 left outer join tb2 on tb1.id=tb2.id";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 LEFT JOIN tb2 ON tb1.id = tb2.id", output);
  
          sql = "tb1 left outer join tb2 using(id)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 LEFT JOIN tb2 USING (id)", output);
  
          sql = "(tb1 right outer join tb2 using()) join tb3 on tb1.id=tb2.id and tb2.id=tb3.id";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(InnerJoin.class, list.get(0).getClass());
          ltr = (TableReferences) ((InnerJoin) list.get(0)).getLeftTableRef();
          Assert.assertEquals(1, ltr.getTableReferenceList().size());
          TableRefFactor lltrf = (TableRefFactor) ((OuterJoin) ltr.getTableReferenceList().get(0)).getLeftTableRef();
          Assert.assertEquals(null, lltrf.getAlias());
          Assert.assertEquals("tb1", lltrf.getTable().getIdText());
          using_list = ((OuterJoin) ltr.getTableReferenceList().get(0)).getUsing();
          Assert.assertEquals(0, using_list.size());
          rtf = (TableRefFactor) ((InnerJoin) list.get(0)).getRightTableRef();
          Assert.assertEquals(null, rtf.getAlias());
          hintlist = rtf.getHintList();
          Assert.assertEquals(0, hintlist.size());
          Assert.assertEquals("tb3", rtf.getTable().getIdText());
          Assert.assertEquals(LogicalAndExpression.class, ((InnerJoin) list.get(0)).getOnCond().getClass());
          Assert.assertEquals(
                  "(tb1 RIGHT JOIN tb2 USING ()) " + "INNER JOIN tb3 ON tb1.id = tb2.id AND tb2.id = tb3.id",
                  output);
  
          sql = "tb1 right outer join tb2 using(id1,id2) " + "join (tb3,tb4) on tb1.id=tb2.id and tb2.id=tb3.id";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(InnerJoin.class, list.get(0).getClass());
          OuterJoin loj = (OuterJoin) ((InnerJoin) list.get(0)).getLeftTableRef();
          lltrf = (TableRefFactor) loj.getLeftTableRef();
          Assert.assertEquals(null, lltrf.getAlias());
          Assert.assertEquals("tb1", lltrf.getTable().getIdText());
          using_list = loj.getUsing();
          Assert.assertEquals(2, using_list.size());
          rtr = (TableReferences) ((InnerJoin) list.get(0)).getRightTableRef();
          Assert.assertEquals(2, rtr.getTableReferenceList().size());
          Assert.assertEquals("tb3", ((TableRefFactor) (rtr.getTableReferenceList().get(0))).getTable().getIdText());
          Assert.assertEquals("tb4", ((TableRefFactor) (rtr.getTableReferenceList().get(1))).getTable().getIdText());
          Assert.assertEquals(LogicalAndExpression.class, ((InnerJoin) list.get(0)).getOnCond().getClass());
          Assert.assertEquals("tb1 RIGHT JOIN tb2 USING (id1, id2) "
                  + "INNER JOIN (tb3, tb4) ON tb1.id = tb2.id AND tb2.id = tb3.id", output);
  
          sql = "tb1 left outer join tb2 join tb3 using(id)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 LEFT JOIN (tb2 INNER JOIN tb3) USING (id)", output);
  
          sql = "tb1 right join tb2 on tb1.id=tb2.id";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 RIGHT JOIN tb2 ON tb1.id = tb2.id", output);
  
          sql = "tb1 natural right join tb2 ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 NATURAL RIGHT JOIN tb2", output);
  
          sql = "tb1 natural right outer join tb2 natural left outer join tb3";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(NaturalJoin.class, list.get(0).getClass());
          NaturalJoin lnj = (NaturalJoin) ((NaturalJoin) list.get(0)).getLeftTableRef();
          lltrf = (TableRefFactor) lnj.getLeftTableRef();
          Assert.assertEquals(null, lltrf.getAlias());
          Assert.assertEquals("tb1", lltrf.getTable().getIdText());
          TableRefFactor rltrf = (TableRefFactor) lnj.getRightTableRef();
          Assert.assertEquals(null, rltrf.getAlias());
          Assert.assertEquals("tb2", rltrf.getTable().getIdText());
          rtf = (TableRefFactor) ((NaturalJoin) list.get(0)).getRightTableRef();
          Assert.assertEquals(null, rtf.getAlias());
          Assert.assertEquals("tb3", rtf.getTable().getIdText());
          Assert.assertEquals("tb1 NATURAL RIGHT JOIN tb2 NATURAL LEFT JOIN tb3", output);
  
          sql = "tb1 natural left outer join tb2 ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("tb1 NATURAL LEFT JOIN tb2", output);
  
          sql = "(tb1  t1) natural  join (tb2 as t2) ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          Assert.assertEquals("(tb1 AS T1) NATURAL JOIN (tb2 AS T2)", output);
  
          sql = "(select (select * from tb1) from `select` " + "where `any`=any(select id2 from tb2))any  ";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(SubqueryFactor.class, list.get(0).getClass());
          Assert.assertEquals("ANY", ((SubqueryFactor) list.get(0)).getAlias());
          Assert.assertEquals("(SELECT SELECT * FROM tb1 FROM `select` "
                  + "WHERE `any` = ANY (SELECT id2 FROM tb2)) AS ANY", output);
  
          sql = "((tb1),(tb3 as t3,`select`),tb2 use key for join (i1,i2))" + " left join tb4 join tb5 using ()";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(OuterJoin.class, list.get(0).getClass());
          Assert.assertEquals(TableReferences.class, ((OuterJoin) list.get(0)).getLeftTableRef().getClass());
          Assert.assertEquals(InnerJoin.class, ((OuterJoin) list.get(0)).getRightTableRef().getClass());
          list = ((TableReferences) ((OuterJoin) list.get(0)).getLeftTableRef()).getTableReferenceList();
          list = ((TableReferences) list.get(1)).getTableReferenceList();
          Assert.assertEquals(2, list.size());
          Assert.assertEquals("(tb1, tb3 AS T3, `select`, tb2 USE KEY FOR JOIN (i1, i2))"
                  + " LEFT JOIN (tb4 INNER JOIN tb5) USING ()", output);
  
          sql = "((select `select` from `from` ) tb1),(tb3 as t3,`select`),tb2 use key for join (i1,i2) "
                  + "left join tb4 using (i1,i2)straight_join tb5";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(3, list.size());
          Assert.assertEquals(TableReferences.class, list.get(0).getClass());
          Assert.assertEquals(TableReferences.class, list.get(1).getClass());
          Assert.assertEquals(StraightJoin.class, list.get(2).getClass());
          list = ((TableReferences) list.get(0)).getTableReferenceList();
          Assert.assertEquals(SubqueryFactor.class, list.get(0).getClass());
          list = trs.getTableReferenceList();
          list = ((TableReferences) list.get(1)).getTableReferenceList();
          Assert.assertEquals(TableRefFactor.class, list.get(0).getClass());
          Assert.assertEquals(TableRefFactor.class, list.get(1).getClass());
          list = trs.getTableReferenceList();
          StraightJoin sj = (StraightJoin) list.get(2);
          Assert.assertEquals(OuterJoin.class, sj.getLeftTableRef().getClass());
          Assert.assertEquals(TableRefFactor.class, sj.getRightTableRef().getClass());
          OuterJoin oj = (OuterJoin) sj.getLeftTableRef();
          using_list = oj.getUsing();
          Assert.assertEquals(2, using_list.size());
          Assert.assertEquals(
                  "(SELECT `select` FROM `from`) AS TB1, tb3 AS T3, `select`, tb2 USE KEY FOR JOIN (i1, i2) LEFT JOIN tb4 USING (i1, i2) STRAIGHT_JOIN tb5",
                  output);
  
          sql = "(`select`,(tb1 as t1 use index for join()ignore key for group by (i1)))" + "join tb2 on cd1=any "
                  + "right join " + "tb3 straight_join "
                  + "(tb4 use index() left outer join (tb6,tb7) on id3=all(select `all` from `all`)) "
                  + " on id2=any(select * from any) using  (i1)";
          lexer = new MySQLLexer(sql);
          parser = getDMLParser(lexer);
          trs = parser.tableRefs();
          output = output2MySQL(trs, sql);
          list = trs.getTableReferenceList();
          Assert.assertEquals(1, list.size());
          Assert.assertEquals(OuterJoin.class, list.get(0).getClass());
          using_list = ((OuterJoin) list.get(0)).getUsing();
          Assert.assertEquals(1, using_list.size());
          Assert.assertEquals(InnerJoin.class, ((OuterJoin) (list.get(0))).getLeftTableRef().getClass());
          Assert.assertEquals(StraightJoin.class, ((OuterJoin) (list.get(0))).getRightTableRef().getClass());
          StraightJoin rsj = (StraightJoin) ((OuterJoin) (list.get(0))).getRightTableRef();
          Assert.assertEquals(TableRefFactor.class, rsj.getLeftTableRef().getClass());
          Assert.assertEquals(TableReferences.class, rsj.getRightTableRef().getClass());
          list = ((TableReferences) rsj.getRightTableRef()).getTableReferenceList();
          Assert.assertEquals(OuterJoin.class, list.get(0).getClass());
          Assert.assertEquals("(`select`, tb1 AS T1 USE INDEX FOR JOIN () IGNORE KEY FOR GROUP BY (i1)) "
                  + "INNER JOIN tb2 ON cd1 = any RIGHT JOIN (tb3 STRAIGHT_JOIN (tb4 USE INDEX () "
                  + "LEFT JOIN (tb6, tb7) ON id3 = ALL (SELECT `all` FROM `all`)) ON id2 = ANY (SELECT * FROM any))"
                  + " USING (i1)", output);
      }
  
  }
  