MediaWiki

Manual:templatelinks table

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↑ Manual:Contents 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

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tl_from

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Key to the page_id of the page doing the transclusion.

tl_namespace

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MediaWiki versions:
1.6 – 1.38

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

tl_title

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MediaWiki versions:
1.6 – 1.38

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

tl_from_namespace

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MediaWiki version:
≥ 1.24

page_namespace of the page doing the transclusion.

tl_target_id

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MediaWiki version:
≥ 1.38

Foreign key to linktarget.lt_id

Schema summary

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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

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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      |         |               |
+---------------+------------+----------------------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
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