? sites/default/modules
? sites/default/settings.php
Index: modules/comment/comment.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.install,v
retrieving revision 1.26
diff -u -p -r1.26 comment.install
--- modules/comment/comment.install	17 Sep 2008 07:11:56 -0000	1.26
+++ modules/comment/comment.install	13 Nov 2008 04:13:06 -0000
@@ -109,6 +109,15 @@ function comment_update_7001() {
 }
 
 /**
+ * Remap {comments}.comment as BLOB type.
+ */
+function comment_update_7002() {
+  $ret = array();
+  db_change_field($ret, 'comments', 'comment', 'comment', array('type' => 'blob', 'not null' => FALSE, 'size' => 'big'));
+  return $ret;
+}
+
+/**
  * @} End of "defgroup updates-6.x-to-7.x"
  * The next series of updates should start at 8000.
  */
@@ -151,8 +160,8 @@ function comment_schema() {
         'description' => t('The comment title.'),
       ),
       'comment' => array(
-        'type' => 'text',
-        'not null' => TRUE,
+        'type' => 'blob',
+        'not null' => FALSE,
         'size' => 'big',
         'description' => t('The comment body.'),
       ),