added testcase for sqlserver 'doModifyLimitQuery' select-from pattern

to test preg_replace performance

tests/Doctrine/Tests/DBAL/Platforms/AbstractSQLServerPlatformTestCase.php

@@ -246,6 +246,20 @@ abstract class AbstractSQLServerPlatformTestCase extends AbstractPlatformTestCas
         $this->assertEquals('SELECT * FROM (SELECT a.fromFoo, fromBar, ROW_NUMBER() OVER (ORDER BY (SELECT 0)) AS doctrine_rownum FROM foo) AS doctrine_tbl WHERE doctrine_rownum BETWEEN 1 AND 10', $sql);
     }
 
+    /**
+     * @group DBAL-927
+     */
+    public function testModifyLimitQueryWithExtraLongQuery()
+    {
+        $query = 'SELECT table1.column1, table2.column2, table3.column3, table4.column4, table5.column5, table6.column6, table7.column7, table8.column8 FROM table1, table2, table3, table4, table5, table6, table7, table8 ';
+        $query.= 'WHERE (table1.column1 = table2.column2) AND (table1.column1 = table3.column3) AND (table1.column1 = table4.column4) AND (table1.column1 = table5.column5) AND (table1.column1 = table6.column6) AND (table1.column1 = table7.column7) AND (table1.column1 = table8.column8) AND (table2.column2 = table3.column3) AND (table2.column2 = table4.column4) AND (table2.column2 = table5.column5) AND (table2.column2 = table6.column6) ';
+        $query.= 'AND (table2.column2 = table7.column7) AND (table2.column2 = table8.column8) AND (table3.column3 = table4.column4) AND (table3.column3 = table5.column5) AND (table3.column3 = table6.column6) AND (table3.column3 = table7.column7) AND (table3.column3 = table8.column8) AND (table4.column4 = table5.column5) AND (table4.column4 = table6.column6) AND (table4.column4 = table7.column7) AND (table4.column4 = table8.column8) ';
+        $query.= 'AND (table5.column5 = table6.column6) AND (table5.column5 = table7.column7) AND (table5.column5 = table8.column8) AND (table6.column6 = table7.column7) AND (table6.column6 = table8.column8) AND (table7.column7 = table8.column8)';
+        
+        $sql = $this->_platform->modifyLimitQuery($query, 10);
+        $this->assertNotNull($sql);
+    }
+
     /**
      * @group DDC-2470
      */