Index: modules/system/system.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.install,v
retrieving revision 1.448
diff -u -r1.448 system.install
--- modules/system/system.install	18 Feb 2010 04:36:38 -0000	1.448
+++ modules/system/system.install	24 Feb 2010 13:09:16 -0000
@@ -1230,7 +1230,7 @@
         'description' => 'The queue name.',
       ),
       'data' => array(
-        'type' => 'text',
+        'type' => 'blob',
         'not null' => FALSE,
         'size' => 'big',
         'serialize' => TRUE,
@@ -2426,6 +2426,21 @@
 }
 
 /**
+ * Change {queue}.data column from text to blob.
+ */
+function system_update_7051() {
+  $data_column_schema = array('description' => 'A collection of data to cache.', 'type' => 'blob', 'not null' => FALSE, 'size' => 'big');
+  if (db_driver() == 'pgsql') {
+    db_add_field('queue', 'data_temp', $data_column_schema);
+    db_query('UPDATE {queue} SET data_temp = data::bytea');
+    db_drop_field('queue', 'data');
+    db_change_field('queue', 'data_temp', 'data', $data_column_schema);
+  } else {
+    db_change_field('queue', 'data', 'data', $data_column_schema);
+  }
+}
+
+/**
  * @} End of "defgroup updates-6.x-to-7.x"
  * The next series of updates should start at 8000.
  */