fix page for SQLServer, add order by context to OrderByItems

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/merger/limit/LimitDecoratorResultSetMerger.java

@@ -48,6 +48,7 @@ public final class LimitDecoratorResultSetMerger extends AbstractDecoratorResult
                 return true;
             }
         }
+        rowNumber = limit.isRowCountRewriteFlag() ? 0 : limit.getOffsetValue();
         return false;
     }
     

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/SQLParser.java

@@ -150,7 +150,7 @@ public class SQLParser extends AbstractParser {
     
     private void setTableToken(final SQLStatement sqlStatement, final int beginPosition, final SQLPropertyExpression propertyExpr) {
         String owner = propertyExpr.getOwner().getName();
-        if (sqlStatement.getTables().getSingleTableName().equalsIgnoreCase(SQLUtil.getExactlyValue(owner))) {
+        if (!sqlStatement.getTables().isEmpty() && sqlStatement.getTables().getSingleTableName().equalsIgnoreCase(SQLUtil.getExactlyValue(owner))) {
             sqlStatement.getSqlTokens().add(new TableToken(beginPosition - owner.length(), owner));
         }
     }

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/sqlserver/SQLServerSelectParser.java

@@ -25,6 +25,7 @@ import com.dangdang.ddframe.rdb.sharding.parsing.parser.context.selectitem.Commo
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.context.selectitem.SelectItem;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.exception.SQLParsingUnsupportedException;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.statement.select.AbstractSelectParser;
+import com.dangdang.ddframe.rdb.sharding.parsing.parser.statement.select.SelectStatement;
 import com.google.common.base.Optional;
 
 public class SQLServerSelectParser extends AbstractSelectParser {
@@ -67,9 +68,14 @@ public class SQLServerSelectParser extends AbstractSelectParser {
     }
     
     @Override
-    protected SelectItem parseRowNumberSelectItem() {
+    protected SelectItem parseRowNumberSelectItem(final SelectStatement selectStatement) {
         getSqlParser().getLexer().nextToken();
         if (getSqlParser().equalAny(Symbol.LEFT_PAREN)) {
+            getSqlParser().skipUntil(DefaultKeyword.OVER);
+            getSqlParser().getLexer().nextToken();
+            getSqlParser().skipIfEqual(Symbol.LEFT_PAREN);
+            selectStatement.getOrderByItems().addAll(parseOrderBy());
+            getSqlParser().skipIfEqual(Symbol.RIGHT_PAREN);
             getSqlParser().skipUntil(DefaultKeyword.AS);
             getSqlParser().getLexer().nextToken();
             SelectItem result = new CommonSelectItem("ROW_NUMBER", Optional.of(getSqlParser().getLexer().getCurrentToken().getLiterals()), false);

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/statement/select/AbstractSelectParser.java

@@ -123,7 +123,7 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
     
     private SelectItem parseSelectItem() {
         if (isRowNumberSelectItem()) {
-            return parseRowNumberSelectItem();
+            return parseRowNumberSelectItem(selectStatement);
         }
         sqlParser.skipIfEqual(DefaultKeyword.CONNECT_BY_ROOT);
         String literals = sqlParser.getLexer().getCurrentToken().getLiterals();
@@ -153,7 +153,7 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
         return false;
     }
     
-    protected SelectItem parseRowNumberSelectItem() {
+    protected SelectItem parseRowNumberSelectItem(final SelectStatement selectStatement) {
         throw new UnsupportedOperationException("Cannot support special select item.");
     }
     

sharding-jdbc-core/src/test/java/com/dangdang/ddframe/rdb/integrate/tbl/pstatement/ShardingTablesOnlyForPreparedStatementWithSelectTest.java

@@ -73,7 +73,7 @@ public final class ShardingTablesOnlyForPreparedStatementWithSelectTest extends
     @Test
     public void assertSelectPagingWithOffsetAndRowCountSql() throws SQLException, DatabaseUnitException {
         if (currentDbType() == SQLServer) {
-            assertSelectPaging("SelectPagingWithOffsetAndRowCountSql.xml", replacePreparedStatement(getDatabaseTestSQL().getSelectPagingWithOffsetAndRowCountSql()), 2, 10, 19, 1000, 1909, 0);
+            assertSelectPaging("SelectPagingWithOffsetAndRowCountSql.xml", replacePreparedStatement(getDatabaseTestSQL().getSelectPagingWithOffsetAndRowCountSql()), 4, 10, 19, 1000, 1909, 2);
         } else {
             assertSelectPaging("SelectPagingWithOffsetAndRowCountSql.xml", replacePreparedStatement(getDatabaseTestSQL().getSelectPagingWithOffsetAndRowCountSql()), 10, 19, 1000, 1909, 2, 2);
         }