Manual:templatelinks table

MediaWiki database layout

templatelinks table

MediaWiki version:

≥ 1.6

The templatelinks table contains for each current transclusion the id of the host page, the namespace number of the included page, and its title without namespace.

The target page may or may not exist, and due to renames and deletions may refer to different page records as time goes by.

Despite the name, transclusions are not limited to templates, nor to the MediaWiki parser's transclusion mechanism; various extensions use this table to mark that they have incorporated content from another page. (E.g. Scribunto 's {{#invoke:...}} and TemplateStyles 's <templatestyles src="..." /> both record the target page in the templatelinks table.)

Fields edit

tl_from edit

Key to the page_id of the page doing the transclusion.

tl_namespace edit

MediaWiki versions:

1.6 – 1.38

Key to page_namespace of the page being transcluded page. Used in conjunction with tl_title.

tl_title edit

MediaWiki versions:

1.6 – 1.38

Key to page_title of the page being transcluded. Used in conjunction with tl_namespace.

tl_from_namespace edit

MediaWiki version:

≥ 1.24

page_namespace of the page doing the transclusion.

tl_target_id edit

MediaWiki version:

≥ 1.38

Foreign key to linktarget.lt_id

Schema summary edit

MediaWiki version:

≥ 1.39

DESCRIBE templatelinks;

+-------------------+---------------------+------+-----+---------+-------+
| Field             | Type                | Null | Key | Default | Extra |
+-------------------+---------------------+------+-----+---------+-------+
| tl_from           | int(10) unsigned    | NO   | PRI | 0       |       |
| tl_target_id      | bigint(20) unsigned | NO   | PRI | NULL    |       |
| tl_from_namespace | int(11)             | NO   | MUL | 0       |       |
+-------------------+---------------------+------+-----+---------+-------+

MediaWiki version:

1.38

DESCRIBE templatelinks;

+-------------------+---------------------+------+-----+---------+-------+
| Field             | Type                | Null | Key | Default | Extra |
+-------------------+---------------------+------+-----+---------+-------+
| tl_from           | int(10) unsigned    | NO   | PRI | 0       |       |
| tl_namespace      | int(11)             | NO   | PRI | 0       |       |
| tl_title          | varbinary(255)      | NO   | PRI |         |       |
| tl_from_namespace | int(11)             | NO   | MUL | 0       |       |
| tl_target_id      | bigint(20) unsigned | YES  | MUL | NULL    |       |
+-------------------+---------------------+------+-----+---------+-------+

MediaWiki versions:

1.36 – 1.37

DESCRIBE templatelinks;

+-------------------+------------------+------+-----+---------+-------+
| Field             | Type             | Null | Key | Default | Extra |
+-------------------+------------------+------+-----+---------+-------+
| tl_from           | int(10) unsigned | NO   | PRI | 0       |       |
| tl_namespace      | int(11)          | NO   | PRI | 0       |       |
| tl_title          | varbinary(255)   | NO   | PRI |         |       |
| tl_from_namespace | int(11)          | NO   | MUL | 0       |       |
+-------------------+------------------+------+-----+---------+-------+

MediaWiki versions:

1.26 – 1.35

DESCRIBE templatelinks;

+-------------------+------------------+------+-----+---------+-------+
| Field             | Type             | Null | Key | Default | Extra |
+-------------------+------------------+------+-----+---------+-------+
| tl_from           | int(10) unsigned | NO   | PRI | 0       |       |
| tl_from_namespace | int(11)          | NO   | MUL | 0       |       |
| tl_namespace      | int(11)          | NO   | PRI | 0       |       |
| tl_title          | varbinary(255)   | NO   | PRI |         |       |
+-------------------+------------------+------+-----+---------+-------+

MediaWiki versions:

1.24 – 1.25

DESCRIBE templatelinks;

+-------------------+---------------------+------+-----+-----------+-------+
| Field             | Type                | Null | Key | Default   | Extra |
+-------------------+---------------------+------+-----+-----------+-------+
| tl_from           | int(10) unsigned    | NO   | PRI | 0         |       |
| tl_from_namespace | int(11)             | NO   |     | 0         |       |
| tl_namespace      | int(11)             | NO   | PRI | 0         |       |
| tl_title          | varchar(255) binary | NO   | PRI | 0         |       |
+-------------------+---------------------+------+-----+-----------+-------+

MediaWiki versions:

1.10 – 1.23

DESCRIBE templatelinks;

+---------------+---------------------+------+-----+-----------+-------+
| Field         | Type                | Null | Key | Default   | Extra |
+---------------+---------------------+------+-----+-----------+-------+
| tl_from       | int(10) unsigned    | NO   | PRI | 0         |       |
| tl_namespace  | int(11)             | NO   | PRI | 0         |       |
| tl_title      | varchar(255) binary | NO   | PRI | 0         |       |
+---------------+---------------------+------+-----+-----------+-------+

MediaWiki versions:

1.6 – 1.9

DESCRIBE templatelinks;

+---------------+---------------------+------+-----+-----------+-------+
| Field         | Type                | Null | Key | Default   | Extra |
+---------------+---------------------+------+-----+-----------+-------+
| tl_from       | int(8) unsigned     | NO   | PRI | 0         |       |
| tl_namespace  | int(8)              | NO   | PRI | 0         |       |
| tl_title      | varchar(255) binary | NO   | PRI | 0         |       |
+---------------+---------------------+------+-----+-----------+-------+

Indexes edit

MediaWiki version:

≥ 1.39

SHOW INDEX IN templatelinks;

+---------------+------------+----------------------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table         | Non_unique | Key_name                         | Seq_in_index | Column_name       | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+---------------+------------+----------------------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| templatelinks |          0 | PRIMARY                          |            1 | tl_from           | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| templatelinks |          0 | PRIMARY                          |            2 | tl_target_id      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| templatelinks |          1 | tl_target_id                     |            1 | tl_target_id      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| templatelinks |          1 | tl_target_id                     |            2 | tl_from           | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| templatelinks |          1 | tl_backlinks_namespace_target_id |            1 | tl_from_namespace | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| templatelinks |          1 | tl_backlinks_namespace_target_id |            2 | tl_target_id      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| templatelinks |          1 | tl_backlinks_namespace_target_id |            3 | tl_from           | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
+---------------+------------+----------------------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+