@SQLReview 
Always using a single number for rev_user, limit is always 2

```
explain SELECT rev_id FROM `revision` left join `page` ON ((revision.rev_page = page.page_id)) WHERE rev_user = 86019  ORDER BY rev_timestamp DESC LIMIT 2;
+----+-------------+----------+--------+----------------+----------------+---------+--------------------------+-------+--------------------------+
| id | select_type | table    | type   | possible_keys  | key            | key_len | ref                      | rows  | Extra                    |
+----+-------------+----------+--------+----------------+----------------+---------+--------------------------+-------+--------------------------+
|  1 | SIMPLE      | revision | ref    | user_timestamp | user_timestamp | 4       | const                    | 14688 | Using where; Using index |
|  1 | SIMPLE      | page     | eq_ref | PRIMARY        | PRIMARY        | 4       | tardis.revision.rev_page |     1 | Using index              |
+----+-------------+----------+--------+----------------+----------------+---------+--------------------------+-------+--------------------------+

```