1 files changed, 10 insertions, 0 deletions
diff --git a/modules/system/system.install b/modules/system/system.install
index f22a6f2b5..4757d9b75 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -1316,6 +1316,13 @@ function system_schema() {
         'not null' => TRUE,
         'default' => '',
       ),
+      'ssid' => array(
+        'description' => "Unique key: Secure session ID. The value is generated by PHP's Session API.",
+        'type' => 'varchar',
+        'length' => 64,
+        'not null' => FALSE,
+        'default' => NULL,
+      ),
       'hostname' => array(
         'description' => 'The IP address that last used this session ID (sid).',
         'type' => 'varchar',
@@ -1347,6 +1354,9 @@ function system_schema() {
       'timestamp' => array('timestamp'),
       'uid' => array('uid'),
     ),
+    'unique keys' => array(
+      'ssid' => array('ssid'),
+    ),
     'foreign keys' => array(
       'uid' => array('users' => 'uid'),
     ),