Manual:Page table/fr

La table des pages peut être considérée comme le « coeur du wiki ». Chaque page d'une installation MediaWiki a une entrée ici qui l'identifie par le titre et qui contient quelques métadonnées essentielles. Introduit pour la première fois dans r6710, dans MediaWiki 1.5.

Le texte de la page elle-même est contenu dans la table. Pour récupérer le texte d'un article, MediaWiki cherche d'abord page_title dans la table des pages. Ensuite, page_latest est utilisé pour chercher dans la table, et  est obtenu dans le processus. La valeur obtenue pour est utilisée pour chercher  dans la table des textes pour récupérer le texte. Quand une page est supprimée, les révisions sont déplacées vers la table.

page_id
Uniquely identifying primary key. This value is preserved across edits and renames.

Page IDs do not change when pages are moved, but they do change when pages are deleted and then restored. As of MediaWiki 1.27, this value is still 'preserved' across deletions via an analogous field in the archive table (introduced in MediaWiki 1.11).

MediaWiki offre un nombre d'outils adaptés :


 * L'ID de chacune des pages (excepté les pages spéciales) peut être recherché par le lien « page information » du menu Outils.
 * Le mot magique peut être utilisé pour retourner l'Id de chaque page.
 * The special page Special:Redirect can be used to access pages via their page IDs. Par exemple, Special:Redirect/page/, redirige vers la page actuelle.
 * index.php accepts the parameter  to access pages via their page IDs. For example, [///w/index.php?curid= /w/index.php?curid=] will load the present page.

There are also many API features that either return the page ID or use it as an input. For example, for the present page,, see http://www.mediawiki.org/w/api.php?action=query&prop=info&titles=Manual:Page%20table and http://www.mediawiki.org/w/api.php?action=query&prop=info&pageids=10501. This field can be accessed by,  , etc.

page_namespace
A page name is broken into a namespace and a title. The namespace keys are UI-language-independent constants, defined in.

This field contains the number of the page's namespace. The values range from 0 to 15 for the standard namespaces, and from 100 to 2147483647 for custom namespaces.

page_title
The sanitized page title, without the namespace, with a maximum of 255 characters (binary). It is stored as text, with spaces replaced by underscores. The real title shown in articles is just this title with underscores (_) converted to spaces. For example, a page titled "Talk:Foo Bar" would have "Foo_Bar" in this field.

page_restrictions
Comma-separated set of permission keys indicating who can move or edit the page. Edit and move sections are separated by a colon (e.g., "edit=autoconfirmed,sysop:move=sysop").

page_counter
Number of times the page has been viewed. This feature was completely removed in MediaWiki 1.25, following a request for comment. Even before that, many sites including Wikimedia projects disabled it to increase performance; see for details.

page_is_redirect
A value of   here indicates the article is a redirect; it is   in all other cases.

page_is_new
This field stores whether the page is a new, meaning it either has only one revision or has not been edited since being restored, even if there is more than one revision. If the field contains a value of  , then it indicates that the page is a new; otherwise, it is  . Rollback links are not displayed if the page is new, since there is nothing to roll back to.

page_random
Random decimal value, between 0 and 1, used for Special:Random (see for more details). Generated by.

Around 2005, a bug caused these random values to be non-uniform. Since the field is set at page creation, wikis that have existed for a long time might still have some of these erroneous values. See T208909.

page_touched
This timestamp is updated whenever the page changes in a way requiring it to be re-rendered, invalidating caches. Aside from editing, this includes permission changes, creation or deletion of linked pages, and alteration of contained templates. Set to at the time of page creation.

page_links_updated
This timestamp is updated whenever a page is re-parsed and it has all the link tracking tables updated for it. This is useful for de-duplicating expensive backlink update jobs. Set to the default value of NULL when the page is created by WikiPage::insertOn.

page_latest
This is a foreign key to rev_id for the current revision. It may be 0 during page creation. It needs to link to a revision with a valid, or there will be the "The revision #0 of the page named 'Foo' does not exist" error when one tries to view the page. Can be obtained via.

page_len
Uncompressed length in bytes of the page's current source text.

This however, does not apply to images which still have records in this table. Instead, the uncompressed length in bytes of the  for the file is used as the latter is in the   field.

The  class in   has two methods, viz.,   and   that are responsible for populating these details.

page_content_model
Content model, see CONTENT_MODEL_XXX constants. Comparable to.

page_lang
Page content language. Set to the default value of NULL at the time of page creation.

Résumé du schéma
++-+--+-+++ ++-+--+-+++ ++-+--+-+++
 * Field             | Type                | Null | Key | Default        | Extra          |
 * page_id           | int(10) unsigned    | NO   | PRI | NULL           | auto_increment |
 * page_namespace    | int(11)             | NO   | MUL | NULL           |                |
 * page_title        | varbinary(255)      | NO   |     | NULL           |                |
 * page_restrictions | tinyblob            | NO   |     | NULL           |                |
 * page_is_redirect  | tinyint(3) unsigned | NO   | MUL | 0              |                |
 * page_is_new       | tinyint(3) unsigned | NO   |     | 0              |                |
 * page_random       | double unsigned     | NO   | MUL | NULL           |                |
 * page_touched      | binary(14)          | NO   |     |                |                |
 * page_links_updated | varbinary(14)      | YES  |     | NULL           |                |
 * page_latest       | int(10) unsigned    | NO   |     | NULL           |                |
 * page_len          | int(10) unsigned    | NO   | MUL | NULL           |                |
 * page_content_model | varbinary(32)      | YES  |     | NULL           |                |
 * page_lang         | varbinary(35)       | YES  |     | NULL           |                |

++-+--+-+-++ ++-+--+-+-++ ++-+--+-+-++
 * Field             | Type                | Null | Key | Default | Extra          |
 * page_id           | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
 * page_namespace    | int(11)             | NO   | MUL | NULL    |                |
 * page_title        | varchar(255) binary | NO   |     | NULL    |                |
 * page_restrictions | tinyblob            | NO   |     | NULL    |                |
 * page_counter      | bigint(20) unsigned | NO   |     | 0       |                |
 * page_is_redirect  | tinyint(3) unsigned | NO   | MUL | 0       |                |
 * page_is_new       | tinyint(3) unsigned | NO   |     | 0       |                |
 * page_random       | real unsigned       | NO   | MUL | NULL    |                |
 * page_touched      | binary(14)          | NO   |     | NULL    |                |
 * page_links_updated | varbinary(14)      | YES  |     | NULL    |                |
 * page_latest       | int(10) unsigned    | NO   |     | NULL    |                |
 * page_len          | int(10) unsigned    | NO   | MUL | NULL    |                |
 * page_content_model | varbinary(32)      | YES  |     | NULL    |                |
 * page_lang         | varbinary(35)       | YES  |     | NULL    |                |

++-+--+-+-++ ++-+--+-+-++ ++-+--+-+-++
 * Field             | Type                | Null | Key | Default | Extra          |
 * page_id           | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
 * page_namespace    | int(11)             | NO   | MUL | NULL    |                |
 * page_title        | varchar(255) binary | NO   |     | NULL    |                |
 * page_restrictions | tinyblob            | NO   |     | NULL    |                |
 * page_counter      | bigint(20) unsigned | NO   |     | 0       |                |
 * page_is_redirect  | tinyint(3) unsigned | NO   | MUL | 0       |                |
 * page_is_new       | tinyint(3) unsigned | NO   |     | 0       |                |
 * page_random       | real unsigned       | NO   | MUL | NULL    |                |
 * page_touched      | binary(14)          | NO   |     | NULL    |                |
 * page_links_updated | varbinary(14)      | YES  |     | NULL    |                |
 * page_latest       | int(10) unsigned    | NO   |     | NULL    |                |
 * page_len          | int(10) unsigned    | NO   | MUL | NULL    |                |
 * page_content_model | varbinary(32)      | YES  |     | NULL    |                |

++-+--+-+-++ ++-+--+-+-++ ++-+--+-+-++
 * Field             | Type                | Null | Key | Default | Extra          |
 * page_id           | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
 * page_namespace    | int(11)             | NO   | MUL | NULL    |                |
 * page_title        | varchar(255) binary | NO   |     | NULL    |                |
 * page_restrictions | tinyblob            | NO   |     | NULL    |                |
 * page_counter      | bigint(20) unsigned | NO   |     | 0       |                |
 * page_is_redirect  | tinyint(3) unsigned | NO   | MUL | 0       |                |
 * page_is_new       | tinyint(3) unsigned | NO   |     | 0       |                |
 * page_random       | real unsigned       | NO   | MUL | NULL    |                |
 * page_touched      | binary(14)          | NO   |     | NULL    |                |
 * page_latest       | int(10) unsigned    | NO   |     | NULL    |                |
 * page_len          | int(10) unsigned    | NO   | MUL | NULL    |                |
 * page_content_model | varbinary(32)      | YES  |     | NULL    |                |

+---+-+--+-+-++ +---+-+--+-+-++ +---+-+--+-+-++
 * Field            | Type                | Null | Key | Default | Extra          |
 * page_id          | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
 * page_namespace   | int(11)             | NO   | MUL | NULL    |                |
 * page_title       | varchar(255) binary | NO   |     | NULL    |                |
 * page_restrictions | tinyblob           | NO   |     | NULL    |                |
 * page_counter     | bigint(20) unsigned | NO   |     | 0       |                |
 * page_is_redirect | tinyint(3) unsigned | NO   | MUL | 0       |                |
 * page_is_new      | tinyint(3) unsigned | NO   |     | 0       |                |
 * page_random      | real unsigned       | NO   | MUL | NULL    |                |
 * page_touched     | binary(14)          | NO   |     | NULL    |                |
 * page_latest      | int(10) unsigned    | NO   |     | NULL    |                |
 * page_len         | int(10) unsigned    | NO   | MUL | NULL    |                |

+---+-+--+-+-++ +---+-+--+-+-++ +---+-+--+-+-++
 * Field            | Type                | Null | Key | Default | Extra          |
 * page_id          | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
 * page_namespace   | int(11)             | NO   | MUL | NULL    |                |
 * page_title       | varchar(255) binary | NO   |     | NULL    |                |
 * page_restrictions | tinyblob           | NO   |     | NULL    |                |
 * page_counter     | bigint(20) unsigned | NO   |     | 0       |                |
 * page_is_redirect | tinyint(3) unsigned | NO   |     | 0       |                |
 * page_is_new      | tinyint(3) unsigned | NO   |     | 0       |                |
 * page_random      | real unsigned       | NO   | MUL | NULL    |                |
 * page_touched     | binary(14)          | NO   |     | NULL    |                |
 * page_latest      | int(10) unsigned    | NO   |     | NULL    |                |
 * page_len         | int(10) unsigned    | NO   | MUL | NULL    |                |

+---+-+--+-+-++ +---+-+--+-+-++ +---+-+--+-+-++
 * Field            | Type                | Null | Key | Default | Extra          |
 * page_id          | int(8) unsigned     | NO   | PRI | NULL    | AUTO_INCREMENT |
 * page_namespace   | int(11)             | NO   | MUL | NULL    |                |
 * page_title       | varchar(255) binary | NO   |     | NULL    |                |
 * page_restrictions | tinyblob           | NO   |     | NULL    |                |
 * page_counter     | bigint(20) unsigned | NO   |     | 0       |                |
 * page_is_redirect | tinyint(1) unsigned | NO   |     | 0       |                |
 * page_is_new      | tinyint(1) unsigned | NO   |     | 0       |                |
 * page_random      | real unsigned       | NO   | MUL | NULL    |                |
 * page_touched     | char(14) binary     | NO   |     | NULL    |                |
 * page_latest      | int(8) unsigned     | NO   |     | NULL    |                |
 * page_len         | int(8) unsigned     | NO   | MUL | NULL    |                |

Index
+---++-+--+--+---+-+--++--++-+---+ +---++-+--+--+---+-+--++--++-+---+ +---++-+--+--+---+-+--++--++-+---+
 * Table | Non_unique | Key_name                   | Seq_in_index | Column_name      | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
 * page |          0 | PRIMARY                     |            1 | page_id          | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          0 | name_title                  |            1 | page_namespace   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          0 | name_title                  |            2 | page_title       | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          1 | page_random                 |            1 | page_random      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          1 | page_len                    |            1 | page_len         | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          1 | page_redirect_namespace_len |            1 | page_is_redirect | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          1 | page_redirect_namespace_len |            2 | page_namespace   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * page |          1 | page_redirect_namespace_len |            3 | page_len         | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |

Pages de listing et relations avec les autres tables essentielles
The following code will select the most recent versions of all articles from core tables: [page, revision, text]:

Other important considerations:


 * to find undeleted pages add "r.rev_deleted = 0"
 * to find pages in namespace 0 add "p.page_namespace = 0"
 * to find pages that are not redirects add "p.page_is_redirect = 0"

These additional statements can be added either as conditions to a Where statement or as conditions on the appropriate Inner Join statement.

Deleting pages with their relationships in text and revision tables
The following shows the steps to run to help you delete pages and their children from the main pages in the page, revision and text tables.

Listing all related table keys

Deleting from database the rows

Vous devriez obtenir un résultat se présentant ainsi :

 +--+--+--+ +--+--+--+ +--+--+--+ 1 row in set (0.07 sec)
 * page                                            | revision                                         | text                                             |
 * IN(5530,5528,5529,5530,5529,5528,5532,5532,5532) | IN(9918,9921,9917,9919,9920,9916,9922,9915,9923) | IN(9918,9921,9917,9919,9920,9916,9922,9915,9923) |

Replace the concatenated id in the following query

Vous pouvez ensuite faire un peu de nettoyage en utilisant ce script de maintenance :