2 files changed, 4 insertions, 1 deletions
diff --git a/engine/schema/mysql.sql b/engine/schema/mysql.sql
index b906f9b5b..695a2e79f 100644
--- a/engine/schema/mysql.sql
+++ b/engine/schema/mysql.sql
@@ -288,7 +288,7 @@ CREATE TABLE `prefix_users_sessions` (
 CREATE TABLE `prefix_datalists` (
   `name` varchar(32) NOT NULL,
   `value` text NOT NULL,
-  KEY `name` (`name`)
+  PRIMARY KEY `name` (`name`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
 
 -- System log
diff --git a/engine/schema/upgrades/2008110601.sql b/engine/schema/upgrades/2008110601.sql
new file mode 100644
index 000000000..ddd80a91b
--- /dev/null
+++ b/engine/schema/upgrades/2008110601.sql
@@ -0,0 +1,3 @@
+-- Alter datalists to have a primary key
+ALTER TABLE `prefix_datalists` DROP KEY `name`;
+ALTER TABLE `prefix_datalists` ADD PRIMARY KEY `name` (`name`);