Extension:CheckUser/cuci user table

A table for the CheckUser extension used find the wikis that a given account has edited on.

This table is in a set of tables that begin with the cuci_ prefix which are used to index the CheckUser result tables on multiple wikis. For single wiki installs, these tables are unused but are still created as there is not an easy way to determine if a wiki is in a multi-wiki install.

The central ID associated with this row. Used in the composite primary key.

The wiki ID associated with this row. The ID for a row in the cuci_wiki_map table. Used in the composite primary key.

The most recent timestamp for actions associated with this central ID and IP.

DESCRIBEcuci_user;

+----------------+----------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------+----------------------+------+-----+---------+-------+
| ciu_central_id | int(10) unsigned | NO | PRI | NULL | |
| ciu_ciwm_id | smallint(5) unsigned | NO | PRI | NULL | |
| ciu_timestamp | binary(14) | NO | MUL | NULL | |
+----------------+----------------------+------+-----+---------+-------+

SHOWINDEXINcuci_user;

+-----------+------------+--------------------------+--------------+----------------+-----------+-------------+----------+--------+------+------------+---------+---------------+---------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment | Ignored |
+-----------+------------+--------------------------+--------------+----------------+-----------+-------------+----------+--------+------+------------+---------+---------------+---------+
| cuci_user | 0 | PRIMARY | 1 | ciu_central_id | A | 0 | NULL | NULL | | BTREE | | | NO |
| cuci_user | 0 | PRIMARY | 2 | ciu_ciwm_id | A | 0 | NULL | NULL | | BTREE | | | NO |
| cuci_user | 1 | ciu_timestamp | 1 | ciu_timestamp | A | 0 | NULL | NULL | | BTREE | | | NO |
| cuci_user | 1 | ciu_central_id_timestamp | 1 | ciu_central_id | A | 0 | NULL | NULL | | BTREE | | | NO |
| cuci_user | 1 | ciu_central_id_timestamp | 2 | ciu_timestamp | A | 0 | NULL | NULL | | BTREE | | | NO |
+-----------+------------+--------------------------+--------------+----------------+-----------+-------------+----------+--------+------+------------+---------+---------------+---------+

• Wikimedia extension database tables