Manual:Watchlist table

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MediaWiki database layout

Watchlist table

The watchlist table contains for each registered user his or her id and for all the pages the user watches, the namespace number, the page title without namespace, and a notification timestamp, used for page change notification.

"DESCRIBE watchlist;" in version 1.4 gives the following:

+------------------+---------------------+------+-----+---------+----------------+
| Field            | Type                | Null | Key | Default | Extra          |
+------------------+---------------------+------+-----+---------+----------------+
| wl_user          | int(5) unsigned     |      |     |         |                |
| wl_namespace     | tinyint(2) unsigned |      |     |    0    |                |
| wl_title         | varchar(255) binary |      |     |    ''   |                |
+------------------+---------------------+------+-----+---------+----------------+

"DESCRIBE watchlist;" in version 1.5 gives the following:

+--------------------------+-----------------+------+-----+---------+-------+
| Field                    | Type            | Null | Key | Default | Extra |
+--------------------------+-----------------+------+-----+---------+-------+
| wl_user                  | int(5) unsigned | NO   | PRI |         |       |
| wl_namespace             | int(11)         | NO   | PRI | 0       |       |
| wl_title                 | varchar(255)    | NO   | PRI |         |       |
| wl_notificationtimestamp | varchar(14)     | NO   |     | 0       |       |
+--------------------------+-----------------+------+-----+---------+-------+

"DESCRIBE watchlist;" in version 1.8 gives the following:

+--------------------------+-----------------+------+-----+---------+-------+
| Field                    | Type            | Null | Key | Default | Extra |
+--------------------------+-----------------+------+-----+---------+-------+
| wl_user                  | int(5) unsigned | NO   | PRI | NULL    |       |
| wl_namespace             | int(11)         | NO   | PRI | 0       |       |
| wl_title                 | varchar(255)    | NO   | PRI | NULL    |       |
| wl_notificationtimestamp | varchar(14)     | YES  |     | NULL    |       |
+--------------------------+-----------------+------+-----+---------+-------+

mysql> describe mw_watchlist;
+--------------------------+-----------------+------+-----+---------+-------+
| Field                    | Type            | Null | Key | Default | Extra |
+--------------------------+-----------------+------+-----+---------+-------+
| wl_user                  | int(5) unsigned | NO   | PRI | NULL    |       |
| wl_namespace             | int(11)         | NO   | PRI | 0       |       |
| wl_title                 | varchar(255)    | NO   | PRI | NULL    |       |
| wl_notificationtimestamp | varchar(14)     | YES  |     | NULL    |       |
+--------------------------+-----------------+------+-----+---------+-------+
4 rows in set (0.01 sec)

Some of this information was adapted from schema.doc in the MediaWiki docs/ directory.