MediaWiki

Manual:change_tag table

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↑ Manual:Contents MediaWiki database layout change_tag table
MediaWiki version:
≥ 1.15

The change_tag table tracks tags for revisions, logs and recent changes. See also the tag_summary and valid_tag tables.

Fields

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ct_id

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MediaWiki version:
≥ 1.28

The primary key.

ct_rc_id

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rc_id for the change.

ct_log_id

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log_id for the change.

ct_rev_id

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rev_id for the change. Note that this will not be unique: for each tag applied to a change, a distinct row is added.

ct_tag

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MediaWiki versions:
1.15 – 1.32

String corresponding to one tag applied to the change.

ct_tag_id

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MediaWiki version:
≥ 1.32

Foreign key to primary key of change_tag_def table (change_tag_def.ctd_id). When it's populated, ct_tag is obsolete.

ct_params

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Parameters for the tag. Example: gerrit:139881 in Extension:ContentTranslation .

Schema summary

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MediaWiki version:
≥ 1.43

DESCRIBE change_tag; 

+-----------+---------------------+------+-----+---------+----------------+
| Field     | Type                | Null | Key | Default | Extra          |
+-----------+---------------------+------+-----+---------+----------------+
| ct_id     | int(10) unsigned    | NO   | PRI | NULL    | auto_increment |
| ct_rc_id  | bigint(20) unsigned | YES  | MUL | NULL    |                |
| ct_log_id | int(10) unsigned    | YES  | MUL | NULL    |                |
| ct_rev_id | int(10) unsigned    | YES  | MUL | NULL    |                |
| ct_params | blob                | YES  |     | NULL    |                |
| ct_tag_id | int(10) unsigned    | NO   | MUL | NULL    |                |
+-----------+---------------------+------+-----+---------+----------------+
MediaWiki versions:
1.36 – 1.42

DESCRIBE change_tag; 

+-----------+------------------+------+-----+---------+----------------+
| Field     | Type             | Null | Key | Default | Extra          |
+-----------+------------------+------+-----+---------+----------------+
| ct_id     | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| ct_rc_id  | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_log_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_rev_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_params | blob             | YES  |     | NULL    |                |
| ct_tag_id | int(10) unsigned | NO   | MUL | NULL    |                |
+-----------+------------------+------+-----+---------+----------------+
MediaWiki versions:
1.33 – 1.35

DESCRIBE change_tag; 

+-----------+------------------+------+-----+---------+----------------+
| Field     | Type             | Null | Key | Default | Extra          |
+-----------+------------------+------+-----+---------+----------------+
| ct_id     | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| ct_rc_id  | int(11)          | YES  | MUL | NULL    |                |
| ct_log_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_rev_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_params | blob             | YES  |     | NULL    |                |
| ct_tag_id | int(10) unsigned | NO   | MUL | NULL    |                |
+-----------+------------------+------+-----+---------+----------------+
MediaWiki version:
1.32

DESCRIBE change_tag; 

+-----------+------------------+------+-----+---------+----------------+
| Field     | Type             | Null | Key | Default | Extra          |
+-----------+------------------+------+-----+---------+----------------+
| ct_id     | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| ct_rc_id  | int(11)          | YES  | MUL | NULL    |                |
| ct_log_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_rev_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_tag    | varbinary(255)   | NO   | MUL |         |                |
| ct_params | blob             | YES  |     | NULL    |                |
| ct_tag_id | int(10) unsigned | YES  | MUL | NULL    |                |
+-----------+------------------+------+-----+---------+----------------+
MediaWiki versions:
1.30 – 1.31

DESCRIBE change_tag; 

+-----------+------------------+------+-----+---------+----------------+
| Field     | Type             | Null | Key | Default | Extra          |
+-----------+------------------+------+-----+---------+----------------+
| ct_id     | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| ct_rc_id  | int(11)          | YES  | MUL | NULL    |                |
| ct_log_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_rev_id | int(10) unsigned | YES  | MUL | NULL    |                |
| ct_tag    | varbinary(255)   | NO   | MUL | NULL    |                |
| ct_params | blob             | YES  |     | NULL    |                |
+-----------+------------------+------+-----+---------+----------------+
MediaWiki versions:
1.28 – 1.29

DESCRIBE change_tag; 

+-----------+------------------+------+-----+---------+----------------+
| Field     | Type             | Null | Key | Default | Extra          |
+-----------+------------------+------+-----+---------+----------------+
| ct_id     | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| ct_rc_id  | int(11)          | YES  | MUL | NULL    |                |
| ct_log_id | int(11)          | YES  | MUL | NULL    |                |
| ct_rev_id | int(11)          | YES  | MUL | NULL    |                |
| ct_tag    | varbinary(255)   | NO   | MUL | NULL    |                |
| ct_params | blob             | YES  |     | NULL    |                |
+-----------+------------------+------+-----+---------+----------------+
MediaWiki versions:
1.15 – 1.27

DESCRIBE change_tag; 

+-----------+----------------+------+-----+---------+-------+
| Field     | Type           | Null | Key | Default | Extra |
+-----------+----------------+------+-----+---------+-------+
| ct_rc_id  | int(11)        | YES  | MUL | NULL    |       |
| ct_log_id | int(11)        | YES  | MUL | NULL    |       |
| ct_rev_id | int(11)        | YES  | MUL | NULL    |       |
| ct_tag    | varbinary(255) | NO   | MUL | NULL    |       |
| ct_params | blob           | YES  |     | NULL    |       |
+-----------+----------------+------+-----+---------+-------+

Indexes

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MediaWiki version:
≥ 1.37

SHOW INDEX IN change_tag; 

+------------+------------+---------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table      | Non_unique | Key_name      | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+------------+------------+---------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| change_tag |          0 | PRIMARY       |            1 | ct_id       | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| change_tag |          0 | ct_rc_tag_id  |            1 | ct_rc_id    | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |
| change_tag |          0 | ct_rc_tag_id  |            2 | ct_tag_id   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| change_tag |          0 | ct_log_tag_id |            1 | ct_log_id   | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |
| change_tag |          0 | ct_log_tag_id |            2 | ct_tag_id   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| change_tag |          0 | ct_rev_tag_id |            1 | ct_rev_id   | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |
| change_tag |          0 | ct_rev_tag_id |            2 | ct_tag_id   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| change_tag |          1 | ct_tag_id_id  |            1 | ct_tag_id   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| change_tag |          1 | ct_tag_id_id  |            2 | ct_rc_id    | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |
| change_tag |          1 | ct_tag_id_id  |            3 | ct_rev_id   | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |
| change_tag |          1 | ct_tag_id_id  |            4 | ct_log_id   | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |
+------------+------------+---------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
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