? sites/default/files
? sites/default/settings.php
Index: includes/database/mysql/schema.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database/mysql/schema.inc,v
retrieving revision 1.1
diff -u -p -r1.1 schema.inc
--- includes/database/mysql/schema.inc	21 Aug 2008 19:36:36 -0000	1.1
+++ includes/database/mysql/schema.inc	27 Aug 2008 20:23:32 -0000
@@ -73,6 +73,12 @@ class DatabaseSchema_mysql extends Datab
   protected function createFieldSql($name, $spec) {
     $sql = "`" . $name . "` " . $spec['mysql_type'];
   
+    // BLOB and TEXT columns cannot have DEFAULT values.
+    // Refer to http://dev.mysql.com/doc/refman/5.1/en/blob.html
+    if (($spec['type'] == 'text') || ($spec['type'] == 'blob')) {
+      unset($spec['default']);
+    }
+    
     if (isset($spec['length'])) {
       $sql .= '(' . $spec['length'] . ')';
     }
Index: modules/comment/comment.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.install,v
retrieving revision 1.24
diff -u -p -r1.24 comment.install
--- modules/comment/comment.install	2 Aug 2008 20:29:43 -0000	1.24
+++ modules/comment/comment.install	27 Aug 2008 20:23:33 -0000
@@ -109,6 +109,16 @@ 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' => TRUE, 'default' => '', 'size' => 'big'));
+
+  return $ret;
+}
+
+/**
  * @} End of "defgroup updates-6.x-to-7.x"
  * The next series of updates should start at 8000.
  */
@@ -151,8 +161,9 @@ function comment_schema() {
         'description' => t('The comment title.'),
       ),
       'comment' => array(
-        'type' => 'text',
+        'type' => 'blob',
         'not null' => TRUE,
+        'default' => '',
         'size' => 'big',
         'description' => t('The comment body.'),
       ),
Index: modules/comment/comment.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.module,v
retrieving revision 1.647
diff -u -p -r1.647 comment.module
--- modules/comment/comment.module	21 Aug 2008 19:36:36 -0000	1.647
+++ modules/comment/comment.module	27 Aug 2008 20:23:34 -0000
@@ -666,7 +666,17 @@ function comment_save($edit) {
       );
       if ($edit['cid']) {
         // Update the comment in the database.
-        db_query("UPDATE {comments} SET status = %d, timestamp = %d, subject = '%s', comment = '%s', format = %d, uid = %d, name = '%s', mail = '%s', homepage = '%s' WHERE cid = %d", $edit['status'], $edit['timestamp'], $edit['subject'], $edit['comment'], $edit['format'], $edit['uid'], $edit['name'], $edit['mail'], $edit['homepage'], $edit['cid']);
+        db_update('comments')->fields(array(
+          'status' => $edit['status'],
+          'timestamp' => $edit['timestamp'],
+          'subject' => $edit['subject'],
+          'comment' => $edit['comment'],
+          'format' => $edit['format'],
+          'uid' => $edit['uid'],
+          'name' => $edit['name'],
+          'mail' => $edit['mail'],
+          'homepage' => $edit['homepage']
+        ))->condition('cid', $edit['cid'])->execute();
         // Allow modules to respond to the updating of a comment.
         comment_invoke_comment($edit, 'update');
         // Add an entry to the watchdog log.
@@ -719,8 +729,21 @@ function comment_save($edit) {
           $edit['name'] = $user->name;
         }
 
-        db_query("INSERT INTO {comments} (nid, pid, uid, subject, comment, format, hostname, timestamp, status, thread, name, mail, homepage) VALUES (%d, %d, %d, '%s', '%s', %d, '%s', %d, %d, '%s', '%s', '%s', '%s')", $edit['nid'], $edit['pid'], $edit['uid'], $edit['subject'], $edit['comment'], $edit['format'], ip_address(), $edit['timestamp'], $edit['status'], $thread, $edit['name'], $edit['mail'], $edit['homepage']);
-        $edit['cid'] = db_last_insert_id('comments', 'cid');
+        $edit['cid'] = db_insert('comments')->fields(array(
+          'nid' => $edit['nid'],
+          'pid' => $edit['pid'],
+          'uid' => $edit['uid'],
+          'subject' => $edit['subject'],
+          'comment' => $edit['comment'],
+          'format' => $edit['format'],
+          'hostname' => ip_address(),
+          'timestamp' => $edit['timestamp'],
+          'status' => $edit['status'],
+          'thread' => $thread,
+          'name' => $edit['name'],
+          'mail' => $edit['mail'],
+          'homepage' => $edit['homepage']
+        ))->execute();
         // Tell the other modules a new comment has been submitted.
         comment_invoke_comment($edit, 'insert');
         // Add an entry to the watchdog log.