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-rw-r--r--sql/mysqld.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/mysqld.h b/sql/mysqld.h
index ad19ce13db8..44db6c6216b 100644
--- a/sql/mysqld.h
+++ b/sql/mysqld.h
@@ -187,7 +187,8 @@ enum vers_system_time_t
SYSTEM_TIME_AS_OF,
SYSTEM_TIME_FROM_TO,
SYSTEM_TIME_BETWEEN,
- SYSTEM_TIME_BEFORE,
+ SYSTEM_TIME_BEFORE, // used for DELETE HISTORY ... BEFORE
+ SYSTEM_TIME_HISTORY, // used for DELETE HISTORY
SYSTEM_TIME_ALL
};