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메뉴얼:문서 테이블

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Manual:컨텐츠 미디어위키 데이터베이스 레이아웃 page 테이블
미디어위키 버전:
1.5

문서 테이블은 "위키의 핵심"으로 볼 수 있습니다. 미디어위키 설치의 각 문서에는 제목별로 식별되며 필수 메타데이터가 포함 된 항목이 있습니다. 그것은 r6710, 미디어위키 1.5 버전에서 처음 소개되었습니다.

문서 자체의 텍스트는 text table에 저장됩니다. 문서의 텍스트를 검색하기 위해, 미디어위키는 먼저 문서테이블에서 $title을 검색합니다. Then, page_latest is used to search the revision table for rev_id , and rev_text_id is obtained in the process. The value obtained for rev_text_id is used to search for old_id in the text table to retrieve the text. When a page is deleted, the revisions are moved to the archive table.

If you want to completely delete a page manually from the database, be sure to delete the entry for the page in the page table, and for all the page's revisions in the revision table, and all of the text rows corresponding only to the page in the text table. This can be done by deleting the page row, then running maintenance/deleteOrphanedRevisions.php.

필드

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 may change when pages are deleted and then restored. As of MediaWiki 1.27, the historical page ID persists in the archive table, and restored pages attempt to reclaim their old page ID.

For further information, see:

page_namespace

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

This field contains the number of the page's namespace. The values range from 0 to 99 for the core namespaces, and from 100 to 10,000 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_is_redirect

A value of 1 here indicates the article is a redirect; it is 0 in all other cases.

page_is_new

This field stores whether the page is 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 1, then it indicates that the page is new; otherwise, it is 0. 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 Manual:Random page for more details). Generated by wfRandom() .

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 $dbw->timestamp() at the time of page creation.

미디어위키 버전:
1.23

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 revision.rev_page, 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 WikiPage::getLatest().

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 description for the file is used as the latter is in the text.old_text field.

The Wikipage class in includes/WikiPage.php has two methods, viz. insertOn() and updateRevisionOn() that are responsible for populating these details.

page_content_model

미디어위키 버전:
1.21

Content model, see CONTENT_MODEL_XXX constants. Comparable to revision.rev_content_model.

page_lang

미디어위키 버전:
1.24

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

page_restrictions

미디어위키 버전:
1.9

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").

미디어위키 버전:
1.10 – 1.38
Beginning with MediaWiki 1.10, page protection controls were moved to the page_restrictions table, so this field will be empty in databases generated by more current versions of MediaWiki. (1.39 에서 제거됨)

page_counter

미디어위키 버전:
1.24

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 Manual:$wgDisableCounters for details.

titlevector

Only used by PostgreSQL

Used instead of the searchindex table by PostgreSQL to facilitate fulltext search.

스키마 요약

미디어위키 버전:
1.43

DESCRIBE page;

+--------------------+---------------------+------+-----+---------+----------------+
| 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_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   |     | NULL    |                |
| page_links_updated | binary(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    |                |
+--------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.39 – 1.42

DESCRIBE page;

+--------------------+---------------------+------+-----+---------+----------------+
| 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_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   |     | 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    |                |
+--------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.36 – 1.38
Gerrit change 690067

DESCRIBE page;

+--------------------+---------------------+------+-----+---------+----------------+
| 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            | YES  |     | 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   |     | 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    |                |
+--------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.35
Gerrit change 581141

DESCRIBE page;

+--------------------+---------------------+------+-----+----------------+----------------+
| 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            | YES  |     | 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           |                |
+--------------------+---------------------+------+-----+----------------+----------------+
미디어위키 버전:
1.25 – 1.34
Gerrit change 167655

DESCRIBE page;

+--------------------+---------------------+------+-----+----------------+----------------+
| 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           |                |
+--------------------+---------------------+------+-----+----------------+----------------+
미디어위키 버전:
1.24
Gerrit change 135312

DESCRIBE page;

+--------------------+---------------------+------+-----+---------+----------------+
| 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    |                |
+--------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.23
Gerrit change 101170

DESCRIBE page;

+--------------------+---------------------+------+-----+---------+----------------+
| 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    |                |
+--------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.21 – 1.22

DESCRIBE page;

+--------------------+---------------------+------+-----+---------+----------------+
| 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    |                |
+--------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.19 – 1.20

DESCRIBE page;

+-------------------+---------------------+------+-----+---------+----------------+
| 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    |                |
+-------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.10 – 1.18

DESCRIBE page;

+-------------------+---------------------+------+-----+---------+----------------+
| 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    |                |
+-------------------+---------------------+------+-----+---------+----------------+
미디어위키 버전:
1.5 – 1.9

DESCRIBE page;

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

Indexes

미디어위키 버전:
1.28

SHOW INDEX IN page;

+-------+------------+-----------------------------+--------------+------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| 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 | page_name_title             |            1 | page_namespace   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| page  |          0 | page_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      |         |               |
+-------+------------+-----------------------------+--------------+------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+

샘플 MySQL 코드

Listing pages and relations with other essential tables

다음 코드는 코어 테이블에서 모든 문서의 최신 버전을 선택합니다. [page, revision, text]

SELECT page_id, page_namespace, page_title, page_latest "rev_id", old_text "text"
   FROM page
   INNER JOIN slots on page_latest = slot_revision_id
   INNER JOIN slot_roles on slot_role_id = role_id and role_name = 'main'
   INNER JOIN content on slot_content_id = content_id inner join text on substring( content_address, 4 ) = old_id and left( content_address, 3 ) = "tt:" and old_flags = "utf-8";

Other important considerations:

  • 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.

같이 보기