Merge remote-tracking branch 'origin/2.2' into 2.2

lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php

@@ -445,6 +445,11 @@ class PostgreSqlPlatform extends AbstractPlatform
             if ($columnDiff->hasChanged('comment') && $comment = $this->getColumnComment($column)) {
                 $commentsSQL[] = $this->getCommentOnColumnSQL($diff->name, $column->getName(), $comment);
             }
+
+            if ($columnDiff->hasChanged('length')) {
+                $query = 'ALTER ' . $column->getName() . ' TYPE ' . $column->getType()->getSqlDeclaration($column->toArray(), $this);
+                $sql[] = 'ALTER TABLE ' . $diff->name . ' ' . $query;
+            }
         }
 
         foreach ($diff->renamedColumns as $oldColumnName => $column) {

lib/Doctrine/DBAL/Schema/MySqlSchemaManager.php

@@ -141,17 +141,11 @@ class MySqlSchemaManager extends AbstractSchemaManager
         }
 
         $length = ((int) $length == 0) ? null : (int) $length;
-        $def =  array(
-            'type' => $type,
-            'length' => $length,
-            'unsigned' => (bool) $unsigned,
-            'fixed' => (bool) $fixed
-        );
 
         $options = array(
             'length'        => $length,
-            'unsigned'      => (bool)$unsigned,
-            'fixed'         => (bool)$fixed,
+            'unsigned'      => (bool) (strpos($tableColumn['type'], 'unsigned') !== false),
+            'fixed'         => (bool) $fixed,
             'default'       => isset($tableColumn['default']) ? $tableColumn['default'] : null,
             'notnull'       => (bool) ($tableColumn['null'] != 'YES'),
             'scale'         => null,