Manual:Externallinks table

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MediaWiki database layoutManual:Database layout

externallinks table

The externallinks table is where MediaWiki stores and tracks external links. This table was introduced after 1.5.

Fields

el_id

MediaWiki version:

≥ 1.22

The primary key. Presently not used for anything, but will help with online schema changes.

el_from

The page identifier of the referring wiki page.

el_to

The actual URL itself. It is passed to the browser.

el_index

This is the same URL as el_to search-optimized: username and password information is stripped, and the other components are reversed for faster searching, so http://user:[email protected]/page.html becomes http://com.example.sub./page.html, which allows searches of the form 'Show all links pointing to *.example.com'.

Schema

Current version

MediaWiki version:

1.22

mysql> describe externallinks;
+----------+------------------+------+-----+---------+----------------+
| Field    | Type             | Null | Key | Default | Extra          |
+----------+------------------+------+-----+---------+----------------+
| el_id    | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| el_from  | int(10) unsigned | NO   | MUL | 0       |                |
| el_to    | blob             | NO   | MUL | NULL    |                |
| el_index | blob             | NO   | MUL | NULL    |                |
+----------+------------------+------+-----+---------+----------------+

Previous versions

MediaWiki versions:

1.19 – 1.20

mysql> describe externallinks;
+----------+------------------+------+-----+---------+-------+
| Field    | Type             | Null | Key | Default | Extra |
+----------+------------------+------+-----+---------+-------+
| el_from  | int(10) unsigned | NO   | MUL | 0       |       |
| el_to    | blob             | NO   | MUL | NULL    |       |
| el_index | blob             | NO   | MUL | NULL    |       |
+----------+------------------+------+-----+---------+-------+

MediaWiki version:

1.12

+----------+-----------------+------+-----+---------+-------+
| Field    | Type            | Null | Key | Default | Extra |
+----------+-----------------+------+-----+---------+-------+
| el_from  | int(8) unsigned | NO   | MUL | 0       |       |
| el_to    | blob            | NO   | MUL | NULL    |       |
| el_index | blob            | NO   | MUL | NULL    |       |
+----------+-----------------+------+-----+---------+-------+

MediaWiki version:

1.11

MediaWiki version:

1.10

+----------+-----------------+------+-----+---------+-------+
| Field    | Type            | Null | Key | Default | Extra |
+----------+-----------------+------+-----+---------+-------+
| el_from  | int(10) unsigned| NO   | MUL | 0       |       |
| el_to    | blob            | NO   | MUL | NULL    |       |
| el_index | blob            | NO   | MUL | NULL    |       |
+----------+-----------------+------+-----+---------+-------+

MediaWiki version:

1.9

MediaWiki version:

1.8

MediaWiki version:

1.7

MediaWiki version:

1.6

MediaWiki version:

1.5

+----------+-----------------+------+-----+---------+-------+
| Field    | Type            | Null | Key | Default | Extra |
+----------+-----------------+------+-----+---------+-------+
| el_from  | int(8) unsigned |      | MUL | 0       |       |
| el_to    | blob            |      | MUL |         |       |
| el_index | blob            |      | MUL |         |       |
+----------+-----------------+------+-----+---------+-------+

DatabasesManual:Database layout

Engines: MySQLManual:MySQL – OracleManual:Oracle – PostgreSQLManual:PostgreSQL – SQLiteManual:SQLite Technical documentation: SchemaManual:Database layout (tablesCategory:MediaWiki database tables) – API property associationsAPI:Database field and API property associations – Field prefixesDatabase field prefixes – Primary key storage in other fieldsManual:Primary key storage in other fields – Wikimedia extension tablesCategory:Wikimedia extension database tables Configuration: SettingsManual:Configuration_settings#Database_settings – SharingManual:Shared database Development: AccessManual:Database access – OptimizationDatabase optimization – PolicyDevelopment policy#Database_patches – UpdaterManual:DatabaseUpdater.php – Extension schema updatesManual:Hooks/LoadExtensionSchemaUpdates – Patch fileManual:SQL patch file Core tables: archive – category – categorylinks – change_tag – config – externallinks – filearchive – hitcounter – image – imagelinks – interwiki – iwlinks – ipblocks – job – l10n_cache – langlinks – logging – log_search – msg_resource – msg_resource_links – module_deps – objectcache – oldimage – page – pagelinks – page_props – page_restrictions – protected_titles – querycache – querycachetwo – querycache_info – recentchanges – redirect – revision – searchindex – sites – site_stats – tag_summary – templatelinks – text – transcache – updatelog – uploadstash – user – user_former_groups – user_groups – user_newtalk – user_properties – valid_tag – watchlist