-SCHEMA.DOC
-
The most up-to-date schema for the tables in the database
-should always be "tables.sql" in the maintenance directory,
-which is called from the installation script. Here are a
-few highlights that may be out of date:
-
-user (MediaWiki users)
-
- user_id
- integer, primary key, autoincrement
- user_name
- Usernames must be unique, must not be in the form of
- an IP address. _Shouldn't_ allow slashes or case
- conflicts. Spaces are allowed, and are _not_ converted
- to underscores like titles. (Conflicts?)
- user_password
- Hash of current password.
- user_newpassword
- Generated for mail-a-new-password feature
- user_email
- Note -- email should be restricted, not public info.
- Same with passwords. ;)
- user_options
- Newline-separated list of name=value pairs.
- user_token
- A pseudorandomly generated value that is stored in
- a cookie when the "remember password" feature is
- used (previously, a hash of the password was used, but
- this was vulnerable to cookie-stealing attacks)
-
-
-
-cur (MediaWiki "current" articles)
-
- cur_id
- integer, primary key, autoincrement
- cur_namespace
- integer index into list of namespaces. See the
- Namespace class for more details.
- cur_title
- Title of article (in dbkey form--see Title), without
- namespace. The combination of namespace,title should
- be unique in this table.
- cur_text
- Wikitext of the article.
- cur_comment
- The summary of the last change.
- cur_user
- User id who made the last change, or 0 if unknown.
- cur_user_text
- Name of the user above, or IP address.
- cur_timestamp
- Time of the last change.
- cur_minor_edit
- Flag: 0 or 1 is last change was a "minor" edit.
- cur_restrictions
- Who may or may not edit the article.
- cur_counter
- Number of times this page has been viewed.
- cur_ind_title
- Text version of title for fulltext searches.
- cur_ind_text
- Plaintext version of text for fulltext searches.
- cur_is_redirect
- 1 indicates the article is a redirect.
- cur_minor_edit
- 1 indicates this was a minor edit.
- cur_is_new
- 1 indicates this is the first revision of a new entry.
- cur_random
- Random value between 0 and 1, used for
- Special:Randompage
-
-
-
-old (Historical versions articles. Most fields
- correspond to the same fields in "cur")
-
- old_id
- old_namespace
- old_title
- old_text
- old_comment
- old_user
- old_user_text
- old_timestamp
- old_minor_edit
- old_flags
- This last is currently unused.
-
-
-
-archive (Temporary storage of deleted articles which may be restored.
- Fields correspond to those of "cur" and "old")
- ar_namespace
- ar_title
- ar_text
- ar_comment
- ar_user
- ar_user_text
- ar_timestamp
- ar_minor_edit
- ar_flags
- This last is currently unused.
-
-
-
-links (Internal links to existing articles)
-
- l_from
- ID of source article. (currently title, may be changed)
- l_to
- ID of target article.
-
-
-
-brokenlinks (Internal links to non-existent articles)
-
- bl_from
- ID of source link.
- bl_to
- Title of target link.
-
-
-
-imagelinks (Internal links to images via [[Image:filename]] syntax)
-
- il_from
- Title of target article.
- il_to
- Filename of target image.
-
-
-
-categorylinks (Track category inclusions)
-
- cl_from
- corresponds to cur_id of the linking page
- cl_to
- corresponds to cur_title of the category page
- cl_sortkey
- the title of the linking page, or an optional override
- cl_timestampe
- when the link was last added
-
-
-
-linkscc (Stores (possibly gzipped) serialized objects with
- cache arrays to reduce database load slurping up
- from links and brokenlinks.)
-
- lcc_pageid
- The ID of the linking page
- lcc_cacheobj
- A serialized LinkCache object
-
-
-
-image (Uploaded images and other files)
-
- img_name
- Filename.
- img_size
- File size in bytes.
- img_description
- Description field given during upload.
- img_user
- User ID who uploaded the file.
- img_user_text
- User name who uploaded the file.
- img_timestamp
- Timestamp when upload took place.
-
-
-
-oldimage (Old versions of images stored for potential revert)
-
- oi_name
- Original filename.
- oi_archive_name
- Filename of stored old revision; timestamp and
- exclaimation point prepended to oi_name
- oi_size
- File size in bytes.
- oi_description
- Description field given during upload.
- oi_user
- User ID who uploaded the file.
- oi_user_text
- User name who uploaded the file.
- oi_timestamp
- Timestamp when upload took place.
-
-
-
-ipblocks (IP addresses and users blocked from editing)
- ipb_id
- Primary key, introduced for privacy.
- ipb_address
- Blocked IP address in dotted-quad form or user name.
- ipb_user
- Blocked user ID or 0 for IP blocks.
- ipb_by
- User ID who made the block.
- ipb_reason
- Text comment made by blocker.
- ipb_timestamp
- Creation (or refresh) date in standard YMDHMS form. IP
- blocks expire automatically.
- ipb_auto
- Indicates that the IP address was banned because a banned
- user accessed a page through it. If this is 1, ipb_address
- will be hidden.
-
-
-site_stats (Site-wide statistics)
-
- ss_row_id
- Token for where clauses. There's only one row in
- this table. At some point we might want to use a
- date here so we can get stats-by-date.
- ss_total_views
- Number of total views of all pages.
- ss_total_edits
- Number of total page edits.
- ss_good_articles
- Number of "countable" articles.
-
-
-
-hitcounter (Stores an ID for every time any article is visited;
- depending on $wgHitcounterUpdateFreq, it is
- periodically cleared and the cur_counter column
- in the cur table updated for the all articles
- that have been visited.)
- hc_id
- The ID of an article, representing one hit
-
-
-
-recentchanges
-
- (Will document further when working)
-
-
-
-watchlist
-
- wl_user
- Foreign key -> user_id
- wl_namespace
- Namespace -> cur_namespace
- Note that these should only include even-numbered
- namespaces for regular pages; associated talk pages
- (odd numbered namespaces) are folded in.
- wl_title
- Page title -> cur_title
- Note also that the linked page may not exist in page
- or talk namespace, or at all.
-
-
-searchindex (Used for MySQL fulltext searching)
-
- si_page
- The ID of an article
- si_title
- The title of an article, indexed for searching
- si_text
- The text of an article, indexed for searching
-
-
+will always be "tables.sql" in the maintenance directory,
+which is called from the installation script.
-interwiki (Recognized interwiki link prefixes)
- iw_prefix
- The interwiki prefix, (e.g. "Meatball", or the
- language prefix "de")
- iw_url
- The URL of the wiki, with "$1" as a placeholder
- for an article name
- iw_local
- A boolean value indicating whether the wiki is
- in this project (used, for example, to detect
- redirect loops)
-
-
+That file has been commented with details of the usage for
+each table and field.
--- SQL to create the initial tables for the Wikipedia database.
+-- SQL to create the initial tables for the MediaWiki database.
-- This is read and executed by the install script; you should
--- never have to run it by itself.
+-- not have to run it by itself unless doing a manual install.
+
+--
+-- General notes:
+--
+-- If possible, create tables as InnoDB to benefit from the
+-- superior resiliency against crashes and ability to read
+-- during writes (and write during reads!)
+--
+-- Only the 'searchindex' table requires MyISAM due to the
+-- requirement for fulltext index support, which is missing
+-- from InnoDB.
+--
+--
+-- The MySQL table backend for MediaWiki currently uses
+-- 14-character CHAR or VARCHAR fields to store timestamps.
+-- The format is YYYYMMDDHHMMSS, which is derived from the
+-- text format of MySQL's TIMESTAMP fields.
+--
+-- Historically TIMESTAMP fields were used, but abandoned
+-- in early 2002 after a lot of trouble with the fields
+-- auto-updating.
+--
+-- The PostgreSQL backend uses DATETIME fields for timestamps,
+-- and we will migrate the MySQL definitions at some point as
+-- well.
+--
+--
+-- The /*$wgDBprefix*/ comments in this and other files are
+-- replaced with the defined table prefix by the installer
+-- and updater scripts. If you are installing or running
+-- updates manually, you will need to manually insert the
+-- table prefix if any when running these scripts.
--
--- Indexes should be defined here; please import the rest from indexes.sql.
+
+--
+-- The user table contains basic account information,
+-- authentication keys, etc.
+--
+-- Some multi-wiki sites may share a single central user table
+-- between separate wikis using the $wgSharedDB setting.
+--
+-- Note that when a external authentication plugin is used,
+-- user table entries still need to be created to store
+-- preferences and to key tracking information in the other
+-- tables.
+--
CREATE TABLE /*$wgDBprefix*/user (
user_id int(5) unsigned NOT NULL auto_increment,
+
+ -- Usernames must be unique, must not be in the form of
+ -- an IP address. _Shouldn't_ allow slashes or case
+ -- conflicts. Spaces are allowed, and are _not_ converted
+ -- to underscores like titles. (Conflicts?)
user_name varchar(255) binary NOT NULL default '',
+
+ -- Optional 'real name' to be displayed in credit listings
user_real_name varchar(255) binary NOT NULL default '',
+
+ -- Password hashes, normally hashed like so:
+ -- MD5(CONCAT(user_id,'-',MD5(plaintext_password)))
user_password tinyblob NOT NULL default '',
+
+ -- When using 'mail me a new password', a random
+ -- password is generated and the hash stored here.
+ -- The previous password is left in place until
+ -- someone actually logs in with the new password,
+ -- at which point the hash is moved to user_password
+ -- and the old password is invalidated.
user_newpassword tinyblob NOT NULL default '',
+
+ -- Note: email should be restricted, not public info.
+ -- Same with passwords. ;)
user_email tinytext NOT NULL default '',
- user_emailauthenticationtimestamp varchar(14) binary NOT NULL default '0',
+
+ -- Newline-separated list of name=value pairs.
user_options blob NOT NULL default '',
+
+ -- This is a timestamp which is updated when a user
+ -- logs in, logs out, changes preferences, or performs
+ -- some other action requiring HTML cache invalidation
+ -- to ensure that the UI is updated.
user_touched char(14) binary NOT NULL default '',
+
+ -- A pseudorandomly generated value that is stored in
+ -- a cookie when the "remember password" feature is
+ -- used (previously, a hash of the password was used, but
+ -- this was vulnerable to cookie-stealing attacks)
user_token char(32) binary NOT NULL default '',
+
+ -- Initially NULL; when a user's e-mail address has been
+ -- validated by returning with a mailed token, this is
+ -- set to the current timestamp.
user_email_authenticated CHAR(14) BINARY,
+
+ -- Randomly generated token created when the e-mail address
+ -- is set and a confirmation test mail sent.
user_email_token CHAR(32) BINARY,
+
+ -- Expiration date for the
user_email_token_expires CHAR(14) BINARY,
PRIMARY KEY user_id (user_id),
INDEX (user_email_token)
);
+--
+-- User permissions have been broken out to a separate table;
+-- this allows sites with a shared user table to have different
+-- permissions assigned to a user in each project.
+--
-- TODO: de-blob this; it should be a property table
+--
CREATE TABLE /*$wgDBprefix*/user_rights (
+ -- Key to user_id
ur_user int(5) unsigned NOT NULL,
+
+ -- Comma-separated list of permission keys
ur_rights tinyblob NOT NULL default '',
+
UNIQUE KEY ur_user (ur_user)
);
-- INDEX user_ip (user_ip)
-- );
+
+--
+-- Core of the wiki: each page has an entry here which identifies
+-- it by title and contains some essential metadata.
+--
CREATE TABLE /*$wgDBprefix*/page (
- -- Identifiers:
+ -- Unique identifier number. The page_id will be preserved across
+ -- edits and rename operations, but not deletions and recreations.
page_id int(8) unsigned NOT NULL auto_increment,
+
+ -- A page name is broken into a namespace and a title.
+ -- The namespace keys are UI-language-independent constants,
+ -- defined in Namespace.php.
page_namespace tinyint NOT NULL,
+
+ -- The rest of the title, as text.
+ -- Spaces are transformed into underscores in title storage.
page_title varchar(255) binary NOT NULL,
- -- Mutable information
+ -- Comma-separated set of permission keys indicating who
+ -- can move or edit the page.
page_restrictions tinyblob NOT NULL default '',
+
+ -- Number of times this page has been viewed.
page_counter bigint(20) unsigned NOT NULL default '0',
+
+ -- 1 indicates the article is a redirect.
page_is_redirect tinyint(1) unsigned NOT NULL default '0',
+
+ -- 1 indicates this is a new entry, with only one edit.
+ -- Not all pages with one edit are new pages.
page_is_new tinyint(1) unsigned NOT NULL default '0',
+
+ -- Random value between 0 and 1, used for Special:Randompage
page_random real unsigned NOT NULL,
+
+ -- This timestamp is updated whenever the page changes in
+ -- a way requiring it to be re-rendered, invalidating caches.
+ -- On top of editing this includes permission changes,
+ -- creation or deletion of linked pages, and alteration
+ -- of contained templates.
page_touched char(14) binary NOT NULL default '',
- -- Handy key to revision.rev_id of the current revision
+
+ -- Handy key to revision.rev_id of the current revision.
+ -- This may be 0 during page creation, but that shouldn't
+ -- happen outside of a transaction... hopefully.
page_latest int(8) unsigned NOT NULL,
+
+ -- Uncompressed length in bytes of the page's current source text.
page_len int(8) unsigned NOT NULL,
PRIMARY KEY page_id (page_id),
INDEX (page_len)
);
+--
+-- Every edit of a page creates also a revision row.
+-- This stores metadata about the revision, and a reference
+-- to the text storage backend.
+--
CREATE TABLE /*$wgDBprefix*/revision (
rev_id int(8) unsigned NOT NULL auto_increment,
+
+ -- Key to page_id. This should _never_ be invalid.
rev_page int(8) unsigned NOT NULL,
+
+ -- Key to text.old_id, where the actual bulk text is stored.
+ -- It's possible for multiple revisions to use the same text,
+ -- for instance revisions where only metadata is altered
+ -- or a rollback to a previous version.
rev_text_id int(8) unsigned NOT NULL,
+
+ -- Text comment summarizing the change.
+ -- This text is shown in the history and other changes lists,
+ -- rendered in a subset of wiki markup.
rev_comment tinyblob NOT NULL default '',
+
+ -- Key to user_id of the user who made this edit.
+ -- Stores 0 for anonymous edits and for some mass imports.
rev_user int(5) unsigned NOT NULL default '0',
+
+ -- Text username or IP address of the editor.
rev_user_text varchar(255) binary NOT NULL default '',
+
+ -- Timestamp
rev_timestamp char(14) binary NOT NULL default '',
+
+ -- Records whether the user marked the 'minor edit' checkbox.
+ -- Many automated edits are marked as minor.
rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
+
+ -- Not yet used; reserved for future changes to the deletion system.
rev_deleted tinyint(1) unsigned NOT NULL default '0',
PRIMARY KEY rev_page_id (rev_page, rev_id),
--
-- Holds text of individual page revisions.
--
+-- Field names are a holdover from the 'old' revisions table in
+-- MediaWiki 1.4 and earlier: an upgrade will transform that
+-- table into the 'text' table to minimize unnecessary churning
+-- and downtime. If upgrading, the other fields will be left unused.
+--
CREATE TABLE /*$wgDBprefix*/text (
+ -- Unique text storage key number.
+ -- Note that the 'oldid' parameter used in URLs does *not*
+ -- refer to this number anymore, but to rev_id.
old_id int(8) unsigned NOT NULL auto_increment,
+
+ -- Depending on the contents of the old_flags field, the text
+ -- may be convenient plain text, or it may be funkily encoded.
old_text mediumtext NOT NULL default '',
+
+ -- Comma-separated list of flags:
+ -- gzip: text is compressed with PHP's gzdeflate() function.
+ -- utf8: text was stored as UTF-8.
+ -- If $wgLegacyEncoding option is on, rows *without* this flag
+ -- will be converted to UTF-8 transparently at load time.
+ -- object: text field contained a serialized PHP object.
+ -- The object either contains multiple versions compressed
+ -- together to achieve a better compression ratio, or it refers
+ -- to another row where the text can be found.
old_flags tinyblob NOT NULL default '',
PRIMARY KEY old_id (old_id)
);
+--
+-- Holding area for deleted articles, which may be viewed
+-- or restored by admins through the Special:Undelete interface.
+-- The fields generally correspond to the page, revision, and text
+-- fields, with several caveats.
+--
CREATE TABLE /*$wgDBprefix*/archive (
ar_namespace tinyint(2) unsigned NOT NULL default '0',
ar_title varchar(255) binary NOT NULL default '',
+
+ -- Newly deleted pages will not store text in this table,
+ -- but will reference the separately existing text rows.
+ -- This field is retained for backwards compatibility,
+ -- so old archived pages will remain accessible after
+ -- upgrading from 1.4 to 1.5.
ar_text mediumtext NOT NULL default '',
+
+ -- Basic revision stuff...
ar_comment tinyblob NOT NULL default '',
ar_user int(5) unsigned NOT NULL default '0',
ar_user_text varchar(255) binary NOT NULL,
ar_timestamp char(14) binary NOT NULL default '',
ar_minor_edit tinyint(1) NOT NULL default '0',
+
+ -- See ar_text note.
ar_flags tinyblob NOT NULL default '',
+
+ -- When revisions are deleted, their unique rev_id is stored
+ -- here so it can be retained after undeletion. This is necessary
+ -- to retain permalinks to given revisions after accidental delete
+ -- cycles or messy operations like history merges.
+ --
+ -- Old entries from 1.4 will be NULL here, and a new rev_id will
+ -- be created on undeletion for those revisions.
ar_rev_id int(8) unsigned,
+
+ -- For newly deleted revisions, this is the text.old_id key to the
+ -- actual stored text. To avoid breaking the block-compression scheme
+ -- and otherwise making storage changes harder, the actual text is
+ -- *not* deleted from the text table, merely hidden by removal of the
+ -- page and revision entries.
+ --
+ -- Old entries deleted under 1.2-1.4 will have NULL here, and their
+ -- ar_text and ar_flags fields will be used to create a new text
+ -- row upon undeletion.
ar_text_id int(8) unsigned,
KEY name_title_timestamp (ar_namespace,ar_title,ar_timestamp)
);
--
--- Track links that do exist
--- l_from and l_to key to cur_id
+-- Track links within the wiki that do exist.
+-- These rows must be removed when the target page is
+-- deleted, and replaced with brokenlinks entries.
+-- They must also be updated if a target page is renamed.
--
CREATE TABLE /*$wgDBprefix*/links (
+ -- Key to the page_id of the page containing the link.
l_from int(8) unsigned NOT NULL default '0',
+
+ -- Key to the page_id of the link target.
+ -- An unfortunate consequence of this is that rename
+ -- operations require changing the links entries for
+ -- all links to the moved page.
l_to int(8) unsigned NOT NULL default '0',
+
UNIQUE KEY l_from(l_from,l_to),
KEY (l_to)
);
--
-- Track links to pages that don't yet exist.
--- bl_from keys to cur_id
--- bl_to is a text link (namespace:title)
+-- These rows must be removed when the target page
+-- is created, and replaced with links table entries.
--
CREATE TABLE /*$wgDBprefix*/brokenlinks (
+ -- Key to the page_id of the page containing the link.
bl_from int(8) unsigned NOT NULL default '0',
+
+ -- Text of the target page title ("namesapce:title").
+ -- Unfortunately this doesn't split the namespace index
+ -- key and therefore can't easily be joined to anything.
bl_to varchar(255) binary NOT NULL default '',
UNIQUE KEY bl_from(bl_from,bl_to),
KEY (bl_to)
--
-- Track links to images *used inline*
--- il_from keys to cur_id, il_to keys to image_name.
--- We don't distinguish live from broken links.
+-- We don't distinguish live from broken links here, so
+-- they do not need to be changed on upload/removal.
--
CREATE TABLE /*$wgDBprefix*/imagelinks (
+ -- Key to page_id of the page containing the image / media link.
il_from int(8) unsigned NOT NULL default '0',
+
+ -- Filename of target image.
+ -- This is also the page_title of the file's description page;
+ -- all such pages are in namespace 6 (NS_IMAGE).
il_to varchar(255) binary NOT NULL default '',
+
UNIQUE KEY il_from(il_from,il_to),
KEY (il_to)
);
--
-- Track category inclusions *used inline*
--- cl_from keys to cur_id, cl_to keys to cur_title of the category page.
--- cl_sortkey is the title of the linking page or an optional override
--- cl_timestamp marks when the link was last added
+-- This tracks a single level of category membership
+-- (folksonomic tagging, really).
--
CREATE TABLE /*$wgDBprefix*/categorylinks (
+ -- Key to page_id of the page defined as a category member.
cl_from int(8) unsigned NOT NULL default '0',
+
+ -- Name of the category.
+ -- This is also the page_title of the category's description page;
+ -- all such pages are in namespace 14 (NS_CATEGORY).
cl_to varchar(255) binary NOT NULL default '',
+
+ -- The title of the linking page, or an optional override
+ -- to determine sort order. Sorting is by binary order, which
+ -- isn't always ideal, but collations seem to be an exciting
+ -- and dangerous new world in MySQL...
cl_sortkey varchar(255) binary NOT NULL default '',
+
+ -- This isn't really used at present. Provided for an optional
+ -- sorting method by approximate addition time.
cl_timestamp timestamp NOT NULL,
+
UNIQUE KEY cl_from(cl_from,cl_to),
+
+ -- This key is trouble. It's incomplete, AND it's too big
+ -- when collation is set to UTF-8. Bleeeacch!
KEY cl_sortkey(cl_to,cl_sortkey(128)),
+
+ -- Not really used?
KEY cl_timestamp(cl_to,cl_timestamp)
);
lcc_cacheobj MEDIUMBLOB NOT NULL
);
+--
+-- Contains a single row with some aggregate info
+-- on the state of the site.
+--
CREATE TABLE /*$wgDBprefix*/site_stats (
+ -- The single row should contain 1 here.
ss_row_id int(8) unsigned NOT NULL,
+
+ -- Total number of page views, if hit counters are enabled.
ss_total_views bigint(20) unsigned default '0',
+
+ -- Total number of edits performed.
ss_total_edits bigint(20) unsigned default '0',
+
+ -- An approximate count of pages matching the following criteria:
+ -- * in namespace 0
+ -- * not a redirect
+ -- * contains the text '[['
ss_good_articles bigint(20) unsigned default '0',
+
UNIQUE KEY ss_row_id (ss_row_id)
);
+--
+-- Stores an ID for every time any article is visited;
+-- depending on $wgHitcounterUpdateFreq, it is
+-- periodically cleared and the cur_counter column
+-- in the cur table updated for the all articles
+-- that have been visited.)
+--
CREATE TABLE /*$wgDBprefix*/hitcounter (
hc_id INTEGER UNSIGNED NOT NULL
) TYPE=HEAP MAX_ROWS=25000;
+
+--
+-- The internet is full of jerks, alas. Sometimes it's handy
+-- to block a vandal or troll account.
+--
CREATE TABLE /*$wgDBprefix*/ipblocks (
+ -- Primary key, introduced for privacy.
ipb_id int(8) NOT NULL auto_increment,
+
+ -- Blocked IP address in dotted-quad form or user name.
ipb_address varchar(40) binary NOT NULL default '',
+
+ -- Blocked user ID or 0 for IP blocks.
ipb_user int(8) unsigned NOT NULL default '0',
+
+ -- User ID who made the block.
ipb_by int(8) unsigned NOT NULL default '0',
+
+ -- Text comment made by blocker.
ipb_reason tinyblob NOT NULL default '',
+
+ -- Creation (or refresh) date in standard YMDHMS form.
+ -- IP blocks expire automatically.
ipb_timestamp char(14) binary NOT NULL default '',
+
+ -- Indicates that the IP address was banned because a banned
+ -- user accessed a page through it. If this is 1, ipb_address
+ -- will be hidden, and the block identified by block ID number.
ipb_auto tinyint(1) NOT NULL default '0',
+
+ -- Time at which the block will expire.
ipb_expiry char(14) binary NOT NULL default '',
PRIMARY KEY ipb_id (ipb_id),
INDEX ipb_user (ipb_user)
);
+
+--
+-- Uploaded images and other files.
+--
CREATE TABLE /*$wgDBprefix*/image (
+ -- Filename.
+ -- This is also the title of the associated description page,
+ -- which will be in namespace 6 (NS_IMAGE).
img_name varchar(255) binary NOT NULL default '',
+
+ -- File size in bytes.
img_size int(8) unsigned NOT NULL default '0',
+
+ -- For images, size in pixels.
img_width int(5) NOT NULL default '0',
img_height int(5) NOT NULL default '0',
+
+ -- Extracted EXIF metadata stored as a serialized PHP array.
img_metadata mediumblob NOT NULL,
+
+ -- For images, bits per pixel if known.
img_bits int(3) NOT NULL default '0',
+
+ -- File type key returned by getimagesize().
+ -- See http://www.php.net/getimagesize for possible values.
img_type int(3) NOT NULL default '0',
+
+ -- Description field as entered by the uploader.
+ -- This is displayed in image upload history and logs.
img_description tinyblob NOT NULL default '',
+
+ -- user_id and user_name of uploader.
img_user int(5) unsigned NOT NULL default '0',
img_user_text varchar(255) binary NOT NULL default '',
+
+ -- Time of the upload.
img_timestamp char(14) binary NOT NULL default '',
PRIMARY KEY img_name (img_name),
+
+ -- Used by Special:Imagelist for sort-by-size
INDEX img_size (img_size),
+
+ -- Used by Special:Newimages and Special:Imagelist
INDEX img_timestamp (img_timestamp)
);
+--
+-- Previous revisions of uploaded files.
+-- Awkwardly, image rows have to be moved into
+-- this table at re-upload time.
+--
CREATE TABLE /*$wgDBprefix*/oldimage (
+ -- Base filename: key to image.img_name
oi_name varchar(255) binary NOT NULL default '',
+
+ -- Filename of the archived file.
+ -- This is generally a timestamp and '!' prepended to the base name.
oi_archive_name varchar(255) binary NOT NULL default '',
+
+ -- Other fields as in image...
oi_size int(8) unsigned NOT NULL default 0,
oi_width int(5) NOT NULL default 0,
oi_height int(5) NOT NULL default 0,
INDEX oi_name (oi_name(10))
);
+
+--
+-- Primarily a summary table for Special:Recentchanges,
+-- this table contains some additional info on edits from
+-- the last few days.
+--
CREATE TABLE /*$wgDBprefix*/recentchanges (
rc_id int(8) NOT NULL auto_increment,
rc_timestamp varchar(14) binary NOT NULL default '',
rc_cur_time varchar(14) binary NOT NULL default '',
+
+ -- As in revision
rc_user int(10) unsigned NOT NULL default '0',
rc_user_text varchar(255) binary NOT NULL default '',
+
+ -- When pages are renamed, their RC entries do _not_ change.
rc_namespace tinyint(3) NOT NULL default '0',
rc_title varchar(255) binary NOT NULL default '',
+
+ -- as in revision...
rc_comment varchar(255) binary NOT NULL default '',
rc_minor tinyint(3) unsigned NOT NULL default '0',
+
+ -- Edits by user accounts with the 'bot' rights key are
+ -- marked with a 1 here, and will be hidden from the
+ -- default view.
rc_bot tinyint(3) unsigned NOT NULL default '0',
+
rc_new tinyint(3) unsigned NOT NULL default '0',
+
+ -- Key to page_id (was cur_id prior to 1.5).
+ -- This will keep links working after moves while
+ -- retaining the at-the-time name in the changes list.
rc_cur_id int(10) unsigned NOT NULL default '0',
+
+ -- rev_id of the given revision
rc_this_oldid int(10) unsigned NOT NULL default '0',
+
+ -- rev_id of the prior revision, for generating diff links.
rc_last_oldid int(10) unsigned NOT NULL default '0',
+
+ -- These may no longer be used, with the new move log.
rc_type tinyint(3) unsigned NOT NULL default '0',
rc_moved_to_ns tinyint(3) unsigned NOT NULL default '0',
rc_moved_to_title varchar(255) binary NOT NULL default '',
+
+ -- If the Recent Changes Patrol option is enabled,
+ -- users may mark edits as having been reviewed to
+ -- remove a warning flag on the RC list.
+ -- A value of 1 indicates the page has been reviewed.
rc_patrolled tinyint(3) unsigned NOT NULL default '0',
+
+ -- Recorded IP address the edit was made from, if the
+ -- $wgPutIPinRC option is enabled.
rc_ip char(15) NOT NULL default '',
PRIMARY KEY rc_id (rc_id),
);
CREATE TABLE /*$wgDBprefix*/watchlist (
+ -- Key to user_id
wl_user int(5) unsigned NOT NULL,
+
+ -- Key to page_namespace/page_title
+ -- Note that users may watch patches which do not exist yet,
+ -- or existed in the past but have been deleted.
wl_namespace tinyint(2) unsigned NOT NULL default '0',
wl_title varchar(255) binary NOT NULL default '',
+
+ -- Timestamp when user was last sent a notification e-mail;
+ -- cleared when the user visits the page.
+ -- FIXME: add proper null support etc
wl_notificationtimestamp varchar(14) binary NOT NULL default '0',
+
UNIQUE KEY (wl_user, wl_namespace, wl_title),
KEY namespace_title (wl_namespace,wl_title)
);
+
+--
+-- Used by texvc math-rendering extension to keep track
+-- of previously-rendered items.
+--
CREATE TABLE /*$wgDBprefix*/math (
+ -- Binary MD5 hash of the latex fragment, used as an identifier key.
math_inputhash varchar(16) NOT NULL,
+
+ -- Not sure what this is, exactly...
math_outputhash varchar(16) NOT NULL,
+
+ -- texvc reports how well it thinks the HTML conversion worked;
+ -- if it's a low level the PNG rendering may be preferred.
math_html_conservativeness tinyint(1) NOT NULL,
+
+ -- HTML output from texvc, if any
math_html text,
+
+ -- MathML output from texvc, if any
math_mathml text,
+
UNIQUE KEY math_inputhash (math_inputhash)
);
-
--- Table searchindex must be MyISAM for fulltext support
-
+--
+-- When using the default MySQL search backend, page titles
+-- and text are munged to strip markup, do Unicode case folding,
+-- and prepare the result for MySQL's fulltext index.
+--
+-- This table must be MyISAM; InnoDB does not support the needed
+-- fulltext index.
+--
CREATE TABLE /*$wgDBprefix*/searchindex (
+ -- Key to page_id
si_page int(8) unsigned NOT NULL,
+
+ -- Munged version of title
si_title varchar(255) NOT NULL default '',
+
+ -- Munged version of body text
si_text mediumtext NOT NULL default '',
+
UNIQUE KEY (si_page),
FULLTEXT si_title (si_title),
FULLTEXT si_text (si_text)
) TYPE=MyISAM;
+--
+-- Recognized interwiki link prefixes
+--
CREATE TABLE /*$wgDBprefix*/interwiki (
+ -- The interwiki prefix, (e.g. "Meatball", or the language prefix "de")
iw_prefix char(32) NOT NULL,
+
+ -- The URL of the wiki, with "$1" as a placeholder for an article name.
+ -- Any spaces in the name will be transformed to underscores before
+ -- insertion.
iw_url char(127) NOT NULL,
+
+ -- A boolean value indicating whether the wiki is in this project
+ -- (used, for example, to detect redirect loops)
iw_local BOOL NOT NULL,
+
UNIQUE KEY iw_prefix (iw_prefix)
);
+--
-- Used for caching expensive grouped queries
+--
CREATE TABLE /*$wgDBprefix*/querycache (
+ -- A key name, generally the base name of of the special page.
qc_type char(32) NOT NULL,
+
+ -- Some sort of stored value. Sizes, counts...
qc_value int(5) unsigned NOT NULL default '0',
+
+ -- Target namespace+title
qc_namespace tinyint(2) unsigned NOT NULL default '0',
qc_title char(255) binary NOT NULL default '',
+
KEY (qc_type,qc_value)
);
+--
-- For a few generic cache operations if not using Memcached
+--
CREATE TABLE /*$wgDBprefix*/objectcache (
keyname char(255) binary not null default '',
value mediumblob,
);
-- For storing revision text
+-- This isn't used...
CREATE TABLE /*$wgDBprefix*/blobs (
blob_index char(255) binary NOT NULL default '',
blob_data longblob NOT NULL default '',
);
-- For article validation
-
CREATE TABLE /*$wgDBprefix*/validate (
`val_user` int(11) NOT NULL default '0',
`val_page` int(11) unsigned NOT NULL default '0',
KEY `val_user` (`val_user`,`val_revision`)
) TYPE=MyISAM;
+
CREATE TABLE /*$wgDBprefix*/logging (
-- Symbolic keys for the general log type and the action type
-- within the log. The output format will be controlled by the
dépôts / lhc / web / wiklou.git / commitdiff