add support for column comments in SQL Server

lib/Doctrine/DBAL/Schema/SQLServerSchemaManager.php

@@ -80,6 +80,8 @@ class SQLServerSchemaManager extends AbstractSchemaManager
         }
 
         $type                   = $this->_platform->getDoctrineTypeMapping($dbType);
+        $type                   = $this->extractDoctrineTypeFromComment($tableColumn['comment'], $type);
+        $tableColumn['comment'] = $this->removeDoctrineTypeFromComment($tableColumn['comment'], $type);
 
         switch ($type) {
             case 'char':
@@ -99,6 +101,7 @@ class SQLServerSchemaManager extends AbstractSchemaManager
             'scale'         => $tableColumn['scale'],
             'precision'     => $tableColumn['precision'],
             'autoincrement' => (bool) $tableColumn['autoincrement'],
+            'comment'       => $tableColumn['comment'] !== '' ? $tableColumn['comment'] : null,
         );
 
         $platformOptions = array(

tests/Doctrine/Tests/DBAL/Functional/Schema/SchemaManagerFunctionalTestCase.php

@@ -522,7 +522,9 @@ class SchemaManagerFunctionalTestCase extends \Doctrine\Tests\DbalFunctionalTest
      */
     public function testGetColumnComment()
     {
-        if (!$this->_conn->getDatabasePlatform()->supportsInlineColumnComments() && !$this->_conn->getDatabasePlatform()->supportsCommentOnStatement()) {
+        if ( ! $this->_conn->getDatabasePlatform()->supportsInlineColumnComments() &&
+             ! $this->_conn->getDatabasePlatform()->supportsCommentOnStatement() &&
+             ! $this->_conn->getDatabasePlatform()->getName() == 'mssql') {
             $this->markTestSkipped('Database does not support column comments.');
         }
 
@@ -556,7 +558,9 @@ class SchemaManagerFunctionalTestCase extends \Doctrine\Tests\DbalFunctionalTest
      */
     public function testAutomaticallyAppendCommentOnMarkedColumns()
     {
-        if (!$this->_conn->getDatabasePlatform()->supportsInlineColumnComments() && !$this->_conn->getDatabasePlatform()->supportsCommentOnStatement()) {
+        if ( ! $this->_conn->getDatabasePlatform()->supportsInlineColumnComments() &&
+             ! $this->_conn->getDatabasePlatform()->supportsCommentOnStatement() &&
+             ! $this->_conn->getDatabasePlatform()->getName() == 'mssql') {
             $this->markTestSkipped('Database does not support column comments.');
         }