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-rw-r--r--engine/schema/mysql.sql3
1 files changed, 2 insertions, 1 deletions
diff --git a/engine/schema/mysql.sql b/engine/schema/mysql.sql
index a0c2f0dfd..6eafb0791 100644
--- a/engine/schema/mysql.sql
+++ b/engine/schema/mysql.sql
@@ -299,6 +299,7 @@ CREATE TABLE `prefix_system_log` (
KEY `object_subtype` (`object_subtype`),
KEY `event` (`event`),
KEY `performed_by_guid` (`performed_by_guid`),
- KEY `time_created` (`time_created`)
+ KEY `time_created` (`time_created`),
+ KEY `river_key` (`object_type`, `object_subtype`, `event`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;