Template:SchemaDiagram/sql/mediawiki-1.34.0.txt

-- SQL to create the initial tables for the MediaWiki database. -- This is read and executed by the install script; you should -- not have to run it by itself unless doing a manual install.

-- This is a shared schema file used for both MySQL and SQLite installs. -- -- For more documentation on the database schema, see -- https://www.mediawiki.org/wiki/Manual:Database_layout -- -- 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 BINARY or VARBINARY 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 Postgres backend uses TIMESTAMPTZ fields for timestamps, -- and we will migrate the MySQL definitions at some point as -- well. -- -- -- The /*_*/ 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. --

-- -- 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 /*_*/user ( user_id int unsigned NOT NULL PRIMARY KEY 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. See the User::newFromName for -- the specific tests that usernames have to pass. 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, see User::crypt and User::comparePasswords -- in User.php for the algorithm user_password tinyblob NOT NULL,

-- 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,

-- Timestamp of the last time when a new password was -- sent, for throttling and expiring purposes -- Emailed passwords will expire $wgNewPasswordExpiry -- (a week) after being set. If user_newpass_time is NULL -- (eg. created by mail) it doesn't expire. user_newpass_time binary(14),

-- Note: email should be restricted, not public info. -- Same with passwords. user_email tinytext NOT NULL,

-- If the browser sends an If-Modified-Since header, a 304 response is -- suppressed if the value in this field for the current user is later than -- the value in the IMS header. That is, this field is an invalidation timestamp -- for the browser cache of logged-in users. Among other things, it is used -- to prevent pages generated for a previously logged in user from being -- displayed after a session expiry followed by a fresh login. user_touched binary(14) 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 binary(32) 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 binary(14),

-- Randomly generated token created when the e-mail address -- is set and a confirmation test mail sent. user_email_token binary(32),

-- Expiration date for the user_email_token user_email_token_expires binary(14),

-- Timestamp of account registration. -- Accounts predating this schema addition may contain NULL. user_registration binary(14),

-- Count of edits and edit-like actions. -- -- *NOT* intended to be an accurate copy of COUNT(*) WHERE rev_user=user_id -- May contain NULL for old accounts if batch-update scripts haven't been -- run, as well as listing deleted edits and other myriad ways it could be -- out of sync. -- -- Meant primarily for heuristic checks to give an impression of whether -- the account has been used much. -- user_editcount int,

-- Expiration date for user password. user_password_expires varbinary(14) DEFAULT NULL

) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/user_name ON /*_*/user (user_name); CREATE INDEX /*i*/user_email_token ON /*_*/user (user_email_token); CREATE INDEX /*i*/user_email ON /*_*/user (user_email(50));

-- -- The "actor" table associates user names or IP addresses with integers for -- the benefit of other tables that need to refer to either logged-in or -- logged-out users. If something can only ever be done by logged-in users, it -- can refer to the user table directly. -- CREATE TABLE /*_*/actor ( -- Unique ID to identify each actor  actor_id bigint unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Key to user.user_id, or NULL for anonymous edits. actor_user int unsigned,

-- Text username or IP address actor_name varchar(255) binary NOT NULL ) /*$wgDBTableOptions*/;

-- User IDs and names must be unique. CREATE UNIQUE INDEX /*i*/actor_user ON /*_*/actor (actor_user); CREATE UNIQUE INDEX /*i*/actor_name ON /*_*/actor (actor_name);

-- -- 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. -- -- This table replaces the old user_rights field which used a -- comma-separated blob. -- CREATE TABLE /*_*/user_groups ( -- Key to user_id  ug_user int unsigned NOT NULL default 0,

-- Group names are short symbolic string keys. -- The set of group names is open-ended, though in practice -- only some predefined ones are likely to be used. -- -- At runtime $wgGroupPermissions will associate group keys -- with particular permissions. A user will have the combined -- permissions of any group they're explicitly in, plus -- the implicit '*' and 'user' groups. ug_group varbinary(255) NOT NULL default '',

-- Time at which the user group membership will expire. Set to -- NULL for a non-expiring (infinite) membership. ug_expiry varbinary(14) NULL default NULL,

PRIMARY KEY (ug_user, ug_group) ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/ug_group ON /*_*/user_groups (ug_group); CREATE INDEX /*i*/ug_expiry ON /*_*/user_groups (ug_expiry);

-- Stores the groups the user has once belonged to. -- The user may still belong to these groups (check user_groups). -- Users are not autopromoted to groups from which they were removed. CREATE TABLE /*_*/user_former_groups ( -- Key to user_id  ufg_user int unsigned NOT NULL default 0,  ufg_group varbinary(255) NOT NULL default '',  PRIMARY KEY (ufg_user,ufg_group) ) /*$wgDBTableOptions*/;

-- -- Stores notifications of user talk page changes, for the display -- of the "you have new messages" box -- CREATE TABLE /*_*/user_newtalk ( -- Key to user.user_id  user_id int unsigned NOT NULL default 0,  -- If the user is an anonymous user their IP address is stored here  -- since the user_id of 0 is ambiguous  user_ip varbinary(40) NOT NULL default '',  -- The highest timestamp of revisions of the talk page viewed  -- by this user  user_last_timestamp varbinary(14) NULL default NULL ) /*$wgDBTableOptions*/;

-- Indexes renamed for SQLite in 1.14 CREATE INDEX /*i*/un_user_id ON /*_*/user_newtalk (user_id); CREATE INDEX /*i*/un_user_ip ON /*_*/user_newtalk (user_ip);

-- -- User preferences and perhaps other fun stuff. :) -- Replaces the old user.user_options blob, with a couple nice properties: -- -- 1) We only store non-default settings, so changes to the defaults --   are now reflected for everybody, not just new accounts. -- 2) We can more easily do bulk lookups, statistics, or modifications of --   saved options since it's a sane table structure. -- CREATE TABLE /*_*/user_properties ( -- Foreign key to user.user_id up_user int unsigned NOT NULL,

-- Name of the option being saved. This is indexed for bulk lookup. up_property varbinary(255) NOT NULL,

-- Property value as a string. up_value blob, PRIMARY KEY (up_user,up_property) ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/user_properties_property ON /*_*/user_properties (up_property);

-- -- This table contains a user's bot passwords: passwords that allow access to -- the account via the API with limited rights. -- CREATE TABLE /*_*/bot_passwords ( -- User ID obtained from CentralIdLookup.  bp_user int unsigned NOT NULL,

-- Application identifier bp_app_id varbinary(32) NOT NULL,

-- Password hashes, like user.user_password bp_password tinyblob NOT NULL,

-- Like user.user_token bp_token binary(32) NOT NULL default '',

-- JSON blob for MWRestrictions bp_restrictions blob NOT NULL,

-- Grants allowed to the account when authenticated with this bot-password bp_grants blob NOT NULL,

PRIMARY KEY ( bp_user, bp_app_id ) ) /*$wgDBTableOptions*/;

-- -- Core of the wiki: each page has an entry here which identifies -- it by title and contains some essential metadata. -- CREATE TABLE /*_*/page ( -- Unique identifier number. The page_id will be preserved across  -- edits and rename operations, but not deletions and recreations.  page_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- A page name is broken into a namespace and a title. -- The namespace keys are UI-language-independent constants, -- defined in includes/Defines.php page_namespace int NOT NULL,

-- The rest of the title, as text. -- Spaces are transformed into underscores in title storage. page_title varchar(255) binary NOT NULL,

-- Comma-separated set of permission keys indicating who -- can move or edit the page. page_restrictions tinyblob NOT NULL,

-- 1 indicates the article is a redirect. page_is_redirect tinyint 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 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. -- Aside from editing this includes permission changes, -- creation or deletion of linked pages, and alteration -- of contained templates. page_touched binary(14) NOT NULL default '',

-- 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. page_links_updated varbinary(14) NULL default NULL,

-- 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 unsigned NOT NULL,

-- Uncompressed length in bytes of the page's current source text. page_len int unsigned NOT NULL,

-- content model, see CONTENT_MODEL_XXX constants page_content_model varbinary(32) DEFAULT NULL,

-- Page content language page_lang varbinary(35) DEFAULT NULL ) /*$wgDBTableOptions*/;

-- The title index. Care must be taken to always specify a namespace when -- by title, so that the index is used. Even listing all known namespaces -- with IN is better than omitting page_namespace from the WHERE clause. CREATE UNIQUE INDEX /*i*/name_title ON /*_*/page (page_namespace,page_title);

-- The index for Special:Random CREATE INDEX /*i*/page_random ON /*_*/page (page_random);

-- Questionable utility, used by ProofreadPage, possibly DynamicPageList. -- ApiQueryAllPages unconditionally filters on namespace and so hopefully does -- not use it. CREATE INDEX /*i*/page_len ON /*_*/page (page_len);

-- The index for Special:Shortpages and Special:Longpages. Also SiteStats::articles -- in 'comma' counting mode, MessageCache::loadFromDB. CREATE INDEX /*i*/page_redirect_namespace_len ON /*_*/page (page_is_redirect, page_namespace, 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 /*_*/revision ( -- Unique ID to identify each revision  rev_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Key to page_id. This should _never_ be invalid. rev_page int 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. -- @deprecated since 1.31. If rows in the slots table with slot_revision_id = rev_id -- exist, this field should be ignored (and may be 0) in favor of the -- corresponding data from the slots and content tables rev_text_id int unsigned NOT NULL default 0,

-- Text comment summarizing the change. Deprecated in favor of -- revision_comment_temp.revcomment_comment_id. rev_comment varbinary(767) NOT NULL default '',

-- Key to user.user_id of the user who made this edit. -- Stores 0 for anonymous edits and for some mass imports. -- Deprecated in favor of revision_actor_temp.revactor_actor. rev_user int unsigned NOT NULL default 0,

-- Text username or IP address of the editor. -- Deprecated in favor of revision_actor_temp.revactor_actor. rev_user_text varchar(255) binary NOT NULL default '',

-- Timestamp of when revision was created rev_timestamp binary(14) NOT NULL default '',

-- Records whether the user marked the 'minor edit' checkbox. -- Many automated edits are marked as minor. rev_minor_edit tinyint unsigned NOT NULL default 0,

-- Restrictions on who can access this revision rev_deleted tinyint unsigned NOT NULL default 0,

-- Length of this revision in bytes rev_len int unsigned,

-- Key to revision.rev_id -- This field is used to add support for a tree structure (The Adjacency List Model) rev_parent_id int unsigned default NULL,

-- SHA-1 text content hash in base-36 rev_sha1 varbinary(32) NOT NULL default '',

-- content model, see CONTENT_MODEL_XXX constants -- @deprecated since 1.31. If rows in the slots table with slot_revision_id = rev_id -- exist, this field should be ignored (and may be NULL) in favor of the -- corresponding data from the slots and content tables rev_content_model varbinary(32) DEFAULT NULL,

-- content format, see CONTENT_FORMAT_XXX constants -- @deprecated since 1.31. If rows in the slots table with slot_revision_id = rev_id -- exist, this field should be ignored (and may be NULL). rev_content_format varbinary(64) DEFAULT NULL

) /*$wgDBTableOptions*/ MAX_ROWS=10000000 AVG_ROW_LENGTH=1024; -- In case tables are created as MyISAM, use row hints for MySQL <5.0 to avoid 4GB limit

-- The index is proposed for removal, do not use it in new code: T163532. -- Used for ordering revisions within a page by rev_id, which is usually -- incorrect, since rev_timestamp is normally the correct order. It can also -- be used by dumpBackup.php, if a page and rev_id range is specified. CREATE INDEX /*i*/rev_page_id ON /*_*/revision (rev_page, rev_id);

-- Used by ApiQueryAllRevisions CREATE INDEX /*i*/rev_timestamp ON /*_*/revision (rev_timestamp);

-- History index CREATE INDEX /*i*/page_timestamp ON /*_*/revision (rev_page,rev_timestamp);

-- Logged-in user contributions index CREATE INDEX /*i*/user_timestamp ON /*_*/revision (rev_user,rev_timestamp);

-- Anonymous user countributions index CREATE INDEX /*i*/usertext_timestamp ON /*_*/revision (rev_user_text,rev_timestamp);

-- Credits index. This is scanned in order to compile credits lists for pages, -- in ApiQueryContributors. Also for ApiQueryRevisions if rvuser is specified -- and is a logged-in user. CREATE INDEX /*i*/page_user_timestamp ON /*_*/revision (rev_page,rev_user,rev_timestamp);

-- -- Temporary table to avoid blocking on an alter of revision. -- -- On large wikis like the English Wikipedia, altering the revision table is a -- months-long process. This table is being created to avoid such an alter, and -- will be merged back into revision in the future. -- CREATE TABLE /*_*/revision_comment_temp ( -- Key to rev_id  revcomment_rev int unsigned NOT NULL,  -- Key to comment_id  revcomment_comment_id bigint unsigned NOT NULL,  PRIMARY KEY (revcomment_rev, revcomment_comment_id) ) /*$wgDBTableOptions*/; -- Ensure uniqueness CREATE UNIQUE INDEX /*i*/revcomment_rev ON /*_*/revision_comment_temp (revcomment_rev);

-- -- Temporary table to avoid blocking on an alter of revision. -- -- On large wikis like the English Wikipedia, altering the revision table is a -- months-long process. This table is being created to avoid such an alter, and -- will be merged back into revision in the future. -- CREATE TABLE /*_*/revision_actor_temp ( -- Key to rev_id  revactor_rev int unsigned NOT NULL,  -- Key to actor_id  revactor_actor bigint unsigned NOT NULL,  -- Copy fields from revision for indexes  revactor_timestamp binary(14) NOT NULL default '',  revactor_page int unsigned NOT NULL,  PRIMARY KEY (revactor_rev, revactor_actor) ) /*$wgDBTableOptions*/; -- Ensure uniqueness CREATE UNIQUE INDEX /*i*/revactor_rev ON /*_*/revision_actor_temp (revactor_rev); -- Match future indexes on revision CREATE INDEX /*i*/actor_timestamp ON /*_*/revision_actor_temp (revactor_actor,revactor_timestamp); CREATE INDEX /*i*/page_actor_timestamp ON /*_*/revision_actor_temp (revactor_page,revactor_actor,revactor_timestamp);

-- -- Every time an edit by a logged out user is saved, -- a row is created in ip_changes. This stores -- the IP as a hex representation so that we can more -- easily find edits within an IP range. -- CREATE TABLE /*_*/ip_changes ( -- Foreign key to the revision table, also serves as the unique primary key  ipc_rev_id int unsigned NOT NULL PRIMARY KEY DEFAULT '0',

-- The timestamp of the revision ipc_rev_timestamp binary(14) NOT NULL DEFAULT '',

-- Hex representation of the IP address, as returned by IP::toHex -- For IPv4 it will resemble: ABCD1234 -- For IPv6: v6-ABCD1234000000000000000000000000 -- BETWEEN is then used to identify revisions within a given range ipc_hex varbinary(35) NOT NULL DEFAULT ''

) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/ipc_rev_timestamp ON /*_*/ip_changes (ipc_rev_timestamp); CREATE INDEX /*i*/ipc_hex_time ON /*_*/ip_changes (ipc_hex,ipc_rev_timestamp);

-- -- 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 /*_*/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.  --  -- revision.rev_text_id is a key to this column  old_id int unsigned NOT NULL PRIMARY KEY 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 mediumblob NOT NULL,

-- Comma-separated list of flags: -- gzip: text is compressed with PHP's gzdeflate function. -- utf-8: text was stored as UTF-8. --       If $wgLegacyEncoding option is on, rows *without* this flag --       will be converted to UTF-8 transparently at load time. Note --       that due to a bug in a maintenance script, this flag may --       have been stored as 'utf8' in some cases (T18841). -- object: text field contained a serialized PHP object. --        The object either contains multiple versions compressed --        together to achieve a better compression ratio, or it refers --        to another row where the text can be found. -- external: text was stored in an external location specified by old_text. --          Any additional flags apply to the data stored at that URL, not --          the URL itself. The 'object' flag is *not* set for URLs of the --          form 'DB://cluster/id/itemid', because the external storage --          system itself decompresses these. old_flags tinyblob NOT NULL ) /*$wgDBTableOptions*/ MAX_ROWS=10000000 AVG_ROW_LENGTH=10240; -- In case tables are created as MyISAM, use row hints for MySQL <5.0 to avoid 4GB limit

-- -- Edits, blocks, and other actions typically have a textual comment describing -- the action. They are stored here to reduce the size of the main tables, and -- to allow for deduplication. -- -- Deduplication is currently best-effort to avoid locking on inserts that -- would be required for strict deduplication. There MAY be multiple rows with -- the same comment_text and comment_data. -- CREATE TABLE /*_*/comment ( -- Unique ID to identify each comment  comment_id bigint unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Hash of comment_text and comment_data, for deduplication comment_hash INT 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 by Linker::formatComment -- Size limits are enforced at the application level, and should -- take care to crop UTF-8 strings appropriately. comment_text BLOB NOT NULL,

-- JSON data, intended for localizing auto-generated comments. -- This holds structured data that is intended to be used to provide -- localized versions of automatically-generated comments. When not empty, -- comment_text should be the generated comment localized using the wiki's -- content language. comment_data BLOB ) /*$wgDBTableOptions*/; -- Index used for deduplication. CREATE INDEX /*i*/comment_hash ON /*_*/comment (comment_hash);

-- -- Archive area for deleted pages and their revisions. -- These may be viewed (and restored) by admins through the Special:Undelete interface. -- CREATE TABLE /*_*/archive ( -- Primary key  ar_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Copied from page_namespace ar_namespace int NOT NULL default 0, -- Copied from page_title ar_title varchar(255) binary NOT NULL default '',

-- Basic revision stuff... ar_comment_id bigint unsigned NOT NULL, ar_actor bigint unsigned NOT NULL, ar_timestamp binary(14) NOT NULL default '', ar_minor_edit tinyint NOT NULL default 0,

-- Copied from rev_id. -- -- @since 1.5 Entries from 1.4 will be NULL here. When restoring -- archive rows from before 1.5, a new rev_id is created. ar_rev_id int unsigned NOT NULL,

-- Copied from rev_text_id, references text.old_id. -- To avoid breaking the block-compression scheme and otherwise making -- storage changes harder, the actual text is *not* deleted from the -- text storage. Instead, it is merely hidden from public view, by removal -- of the page and revision entries. -- -- @deprecated since 1.31. If rows in the slots table with slot_revision_id = ar_rev_id -- exist, this field should be ignored (and may be 0) in favor of the -- corresponding data from the slots and content tables ar_text_id int unsigned NOT NULL DEFAULT 0,

-- Copied from rev_deleted. Although this may be raised during deletion. -- Users with the "suppressrevision" right may "archive" and "suppress" -- content in a single action. -- @since 1.10 ar_deleted tinyint unsigned NOT NULL default 0,

-- Copied from rev_len, length of this revision in bytes. -- @since 1.10 ar_len int unsigned,

-- Copied from page_id. Restoration will attempt to use this as page ID if -- no current page with the same name exists. Otherwise, the revisions will -- be restored under the current page. Can be used for manual undeletion by -- developers if multiple pages by the same name were archived. -- -- @since 1.11 Older entries will have NULL. ar_page_id int unsigned,

-- Copied from rev_parent_id. -- @since 1.13 ar_parent_id int unsigned default NULL,

-- Copied from rev_sha1, SHA-1 text content hash in base-36 -- @since 1.19 ar_sha1 varbinary(32) NOT NULL default '',

-- Copied from rev_content_model, see CONTENT_MODEL_XXX constants -- @since 1.21 -- @deprecated since 1.31. If rows in the slots table with slot_revision_id = ar_rev_id -- exist, this field should be ignored (and may be NULL) in favor of the -- corresponding data from the slots and content tables ar_content_model varbinary(32) DEFAULT NULL,

-- Copied from rev_content_format, see CONTENT_FORMAT_XXX constants -- @since 1.21 -- @deprecated since 1.31. If rows in the slots table with slot_revision_id = ar_rev_id -- exist, this field should be ignored (and may be NULL). ar_content_format varbinary(64) DEFAULT NULL ) /*$wgDBTableOptions*/;

-- Index for Special:Undelete to page through deleted revisions CREATE INDEX /*i*/name_title_timestamp ON /*_*/archive (ar_namespace,ar_title,ar_timestamp);

-- Index for Special:DeletedContributions CREATE INDEX /*i*/ar_actor_timestamp ON /*_*/archive (ar_actor,ar_timestamp);

-- Index for linking archive rows with tables that normally link with revision -- rows, such as change_tag. CREATE UNIQUE INDEX /*i*/ar_revid_uniq ON /*_*/archive (ar_rev_id);

-- -- Slots represent an n:m relation between revisions and content objects. -- A content object can have a specific "role" in one or more revisions. -- Each revision can have multiple content objects, each having a different role. -- CREATE TABLE /*_*/slots (

-- reference to rev_id or ar_rev_id slot_revision_id bigint unsigned NOT NULL,

-- reference to role_id slot_role_id smallint unsigned NOT NULL,

-- reference to content_id slot_content_id bigint unsigned NOT NULL,

-- The revision ID of the revision that originated the slot's content. -- To find revisions that changed slots, look for slot_origin = slot_revision_id. -- TODO: Is that actually true? Rollback seems to violate it by setting -- slot_origin to an older rev_id. Undeletions could result in the same situation. slot_origin bigint unsigned NOT NULL,

PRIMARY KEY ( slot_revision_id, slot_role_id ) ) /*$wgDBTableOptions*/;

-- Index for finding revisions that modified a specific slot CREATE INDEX /*i*/slot_revision_origin_role ON /*_*/slots (slot_revision_id, slot_origin, slot_role_id);

-- -- The content table represents content objects. It's primary purpose is to provide the necessary -- meta-data for loading and interpreting a serialized data blob to create a content object. -- CREATE TABLE /*_*/content (

-- ID of the content object content_id bigint unsigned PRIMARY KEY AUTO_INCREMENT,

-- Nominal size of the content object (not necessarily of the serialized blob) content_size int unsigned NOT NULL,

-- Nominal hash of the content object (not necessarily of the serialized blob) content_sha1 varbinary(32) NOT NULL,

-- reference to model_id. Note the content format isn't specified; it should -- be assumed to be in the default format for the model unless auto-detected -- otherwise. content_model smallint unsigned NOT NULL,

-- URL-like address of the content blob content_address varbinary(255) NOT NULL ) /*$wgDBTableOptions*/;

-- -- Normalization table for role names -- CREATE TABLE /*_*/slot_roles ( role_id smallint PRIMARY KEY AUTO_INCREMENT,  role_name varbinary(64) NOT NULL ) /*$wgDBTableOptions*/;

-- Index for looking of the internal ID of for a name CREATE UNIQUE INDEX /*i*/role_name ON /*_*/slot_roles (role_name);

-- -- Normalization table for content model names -- CREATE TABLE /*_*/content_models ( model_id smallint PRIMARY KEY AUTO_INCREMENT,  model_name varbinary(64) NOT NULL ) /*$wgDBTableOptions*/;

-- Index for looking of the internal ID of for a name CREATE UNIQUE INDEX /*i*/model_name ON /*_*/content_models (model_name);

-- -- Track page-to-page hyperlinks within the wiki. -- CREATE TABLE /*_*/pagelinks ( -- Key to the page_id of the page containing the link.  pl_from int unsigned NOT NULL default 0,  -- Namespace for this page  pl_from_namespace int NOT NULL default 0,

-- Key to page_namespace/page_title of the target page. -- The target page may or may not exist, and due to renames -- and deletions may refer to different page records as time -- goes by. pl_namespace int NOT NULL default 0, pl_title varchar(255) binary NOT NULL default '', PRIMARY KEY (pl_from,pl_namespace,pl_title) ) /*$wgDBTableOptions*/;

-- Reverse index, for Special:Whatlinkshere CREATE INDEX /*i*/pl_namespace ON /*_*/pagelinks (pl_namespace,pl_title,pl_from);

-- Index for Special:Whatlinkshere with namespace filter CREATE INDEX /*i*/pl_backlinks_namespace ON /*_*/pagelinks (pl_from_namespace,pl_namespace,pl_title,pl_from);

-- -- Track template inclusions. -- CREATE TABLE /*_*/templatelinks ( -- Key to the page_id of the page containing the link.  tl_from int unsigned NOT NULL default 0,  -- Namespace for this page  tl_from_namespace int NOT NULL default 0,

-- Key to page_namespace/page_title of the target page. -- The target page may or may not exist, and due to renames -- and deletions may refer to different page records as time -- goes by. tl_namespace int NOT NULL default 0, tl_title varchar(255) binary NOT NULL default '', PRIMARY KEY (tl_from,tl_namespace,tl_title) ) /*$wgDBTableOptions*/;

-- Reverse index, for Special:Whatlinkshere CREATE INDEX /*i*/tl_namespace ON /*_*/templatelinks (tl_namespace,tl_title,tl_from);

-- Index for Special:Whatlinkshere with namespace filter CREATE INDEX /*i*/tl_backlinks_namespace ON /*_*/templatelinks (tl_from_namespace,tl_namespace,tl_title,tl_from);

-- -- Track links to images *used inline* -- We don't distinguish live from broken links here, so -- they do not need to be changed on upload/removal. -- CREATE TABLE /*_*/imagelinks ( -- Key to page_id of the page containing the image / media link.  il_from int unsigned NOT NULL default 0,  -- Namespace for this page  il_from_namespace int 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_FILE). il_to varchar(255) binary NOT NULL default '', PRIMARY KEY (il_from,il_to) ) /*$wgDBTableOptions*/;

-- Reverse index, for Special:Whatlinkshere and file description page local usage CREATE INDEX /*i*/il_to ON /*_*/imagelinks (il_to,il_from);

-- Index for Special:Whatlinkshere with namespace filter CREATE INDEX /*i*/il_backlinks_namespace ON /*_*/imagelinks (il_from_namespace,il_to,il_from);

-- -- Track category inclusions *used inline* -- This tracks a single level of category membership -- CREATE TABLE /*_*/categorylinks ( -- Key to page_id of the page defined as a category member.  cl_from int 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 '',

-- A binary string obtained by applying a sortkey generation algorithm -- (Collation::getSortKey) to page_title, or cl_sortkey_prefix. "\n" -- . page_title if cl_sortkey_prefix is nonempty. cl_sortkey varbinary(230) NOT NULL default '',

-- A prefix for the raw sortkey manually specified by the user, either via -- or. If nonempty, it's -- concatenated with a line break followed by the page title before the sortkey -- conversion algorithm is run. We store this so that we can update -- collations without reparsing all pages. -- Note: If you change the length of this field, you also need to change -- code in LinksUpdate.php. See T27254. cl_sortkey_prefix 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,

-- Stores $wgCategoryCollation at the time cl_sortkey was generated. This -- can be used to install new collation versions, tracking which rows are not -- yet updated. '' means no collation, this is a legacy row that needs to be -- updated by updateCollation.php. In the future, it might be possible to -- specify different collations per category. cl_collation varbinary(32) NOT NULL default '',

-- Stores whether cl_from is a category, file, or other page, so we can -- paginate the three categories separately. This never has to be updated -- after the page is created, since none of these page types can be moved to -- any other. cl_type ENUM('page', 'subcat', 'file') NOT NULL default 'page', PRIMARY KEY (cl_from,cl_to) ) /*$wgDBTableOptions*/;

-- We always sort within a given category, and within a given type. FIXME: -- Formerly this index didn't cover cl_type (since that didn't exist), so old -- callers won't be using an index: fix this? CREATE INDEX /*i*/cl_sortkey ON /*_*/categorylinks (cl_to,cl_type,cl_sortkey,cl_from);

-- Used by the API (and some extensions) CREATE INDEX /*i*/cl_timestamp ON /*_*/categorylinks (cl_to,cl_timestamp);

-- Used when updating collation (e.g. updateCollation.php) CREATE INDEX /*i*/cl_collation_ext ON /*_*/categorylinks (cl_collation, cl_to, cl_type, cl_from);

-- -- Track all existing categories. Something is a category if 1) it has an entry -- somewhere in categorylinks, or 2) it has a description page. Categories -- might not have corresponding pages, so they need to be tracked separately. -- CREATE TABLE /*_*/category ( -- Primary key  cat_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Name of the category, in the same form as page_title (with underscores). -- If there is a category page corresponding to this category, by definition, -- it has this name (in the Category namespace). cat_title varchar(255) binary NOT NULL,

-- The numbers of member pages (including categories and media), subcatego- -- ries, and Image: namespace members, respectively. These are signed to -- make underflow more obvious. We make the first number include the second -- two for better sorting: subtracting for display is easy, adding for order- -- ing is not. cat_pages int signed NOT NULL default 0, cat_subcats int signed NOT NULL default 0, cat_files int signed NOT NULL default 0 ) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/cat_title ON /*_*/category (cat_title);

-- For Special:Mostlinkedcategories CREATE INDEX /*i*/cat_pages ON /*_*/category (cat_pages);

-- -- Track links to external URLs -- CREATE TABLE /*_*/externallinks ( -- Primary key  el_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- page_id of the referring page el_from int unsigned NOT NULL default 0,

-- The URL el_to blob NOT NULL,

-- In the case of HTTP URLs, this is the URL with any username or password -- removed, and with the labels in the hostname reversed and converted to -- lower case. An extra dot is added to allow for matching of either -- example.com or *.example.com in a single scan. -- Example: --     http://user:password@sub.example.com/page.html --  becomes --     http://com.example.sub./page.html -- which allows for fast searching for all pages under example.com with the -- clause: --     WHERE el_index LIKE 'http://com.example.%' -- -- Note if you enable or disable PHP's intl extension, you'll need to run -- maintenance/refreshExternallinksIndex.php to refresh this field. el_index blob NOT NULL,

-- This is el_index truncated to 60 bytes to allow for sortable queries that -- aren't supported by a partial index. el_index_60 varbinary(60) NOT NULL ) /*$wgDBTableOptions*/;

-- Forward index, for page edit, save CREATE INDEX /*i*/el_from ON /*_*/externallinks (el_from, el_to(40));

-- Index for Special:LinkSearch exact search CREATE INDEX /*i*/el_to ON /*_*/externallinks (el_to(60), el_from);

-- For Special:LinkSearch wildcard search CREATE INDEX /*i*/el_index ON /*_*/externallinks (el_index(60));

-- For Special:LinkSearch wildcard search with efficient paging by el_id CREATE INDEX /*i*/el_index_60 ON /*_*/externallinks (el_index_60, el_id); CREATE INDEX /*i*/el_from_index_60 ON /*_*/externallinks (el_from, el_index_60, el_id);

-- -- Track interlanguage links -- CREATE TABLE /*_*/langlinks ( -- page_id of the referring page  ll_from int unsigned NOT NULL default 0,

-- Language code of the target ll_lang varbinary(20) NOT NULL default '',

-- Title of the target, including namespace ll_title varchar(255) binary NOT NULL default '', PRIMARY KEY (ll_from,ll_lang) ) /*$wgDBTableOptions*/;

-- Index for ApiQueryLangbacklinks CREATE INDEX /*i*/ll_lang ON /*_*/langlinks (ll_lang, ll_title);

-- -- Track inline interwiki links -- CREATE TABLE /*_*/iwlinks ( -- page_id of the referring page  iwl_from int unsigned NOT NULL default 0,

-- Interwiki prefix code of the target iwl_prefix varbinary(20) NOT NULL default '',

-- Title of the target, including namespace iwl_title varchar(255) binary NOT NULL default '', PRIMARY KEY (iwl_from,iwl_prefix,iwl_title) ) /*$wgDBTableOptions*/;

-- Index for ApiQueryIWBacklinks CREATE INDEX /*i*/iwl_prefix_title_from ON /*_*/iwlinks (iwl_prefix, iwl_title, iwl_from);

-- Index for ApiQueryIWLinks CREATE INDEX /*i*/iwl_prefix_from_title ON /*_*/iwlinks (iwl_prefix, iwl_from, iwl_title);

-- -- Contains a single row with some aggregate info -- on the state of the site. -- CREATE TABLE /*_*/site_stats ( -- The single row should contain 1 here.  ss_row_id int unsigned NOT NULL PRIMARY KEY,

-- Total number of edits performed. ss_total_edits bigint unsigned default NULL,

-- See SiteStatsInit::articles. ss_good_articles bigint unsigned default NULL,

-- Total pages, theoretically equal to SELECT COUNT(*) FROM page. ss_total_pages bigint unsigned default NULL,

-- Number of users, theoretically equal to SELECT COUNT(*) FROM user. ss_users bigint unsigned default NULL,

-- Number of users that still edit. ss_active_users bigint unsigned default NULL,

-- Number of images, equivalent to SELECT COUNT(*) FROM image. ss_images bigint unsigned default NULL ) /*$wgDBTableOptions*/;

-- -- The internet is full of jerks, alas. Sometimes it's handy -- to block a vandal or troll account. -- CREATE TABLE /*_*/ipblocks ( -- Primary key, introduced for privacy.  ipb_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Blocked IP address in dotted-quad form or user name. ipb_address tinyblob NOT NULL,

-- Blocked user ID or 0 for IP blocks. ipb_user int unsigned NOT NULL default 0,

-- Actor who made the block. ipb_by_actor bigint unsigned NOT NULL,

-- Key to comment_id. Text comment made by blocker. ipb_reason_id bigint unsigned NOT NULL,

-- Creation (or refresh) date in standard YMDHMS form. -- IP blocks expire automatically. ipb_timestamp binary(14) 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 bool NOT NULL default 0,

-- If set to 1, block applies only to logged-out users ipb_anon_only bool NOT NULL default 0,

-- Block prevents account creation from matching IP addresses ipb_create_account bool NOT NULL default 1,

-- Block triggers autoblocks ipb_enable_autoblock bool NOT NULL default '1',

-- Time at which the block will expire. -- May be "infinity" ipb_expiry varbinary(14) NOT NULL default '',

-- Start and end of an address range, in hexadecimal -- Size chosen to allow IPv6 -- FIXME: these fields were originally blank for single-IP blocks, -- but now they are populated. No migration was ever done. They -- should be fixed to be blank again for such blocks (T51504). ipb_range_start tinyblob NOT NULL, ipb_range_end tinyblob NOT NULL,

-- Flag for entries hidden from users and Sysops ipb_deleted bool NOT NULL default 0,

-- Block prevents user from accessing Special:Emailuser ipb_block_email bool NOT NULL default 0,

-- Block allows user to edit their own talk page ipb_allow_usertalk bool NOT NULL default 0,

-- ID of the block that caused this block to exist -- Autoblocks set this to the original block -- so that the original block being deleted also -- deletes the autoblocks ipb_parent_block_id int default NULL,

-- Block user from editing any page on the site (other than their own user -- talk page). ipb_sitewide bool NOT NULL default 1

) /*$wgDBTableOptions*/;

-- Unique index to support "user already blocked" messages -- Any new options which prevent collisions should be included CREATE UNIQUE INDEX /*i*/ipb_address ON /*_*/ipblocks (ipb_address(255), ipb_user, ipb_auto, ipb_anon_only);

-- For querying whether a logged-in user is blocked CREATE INDEX /*i*/ipb_user ON /*_*/ipblocks (ipb_user);

-- For querying whether an IP address is in any range CREATE INDEX /*i*/ipb_range ON /*_*/ipblocks (ipb_range_start(8), ipb_range_end(8));

-- Index for Special:BlockList CREATE INDEX /*i*/ipb_timestamp ON /*_*/ipblocks (ipb_timestamp);

-- Index for table pruning CREATE INDEX /*i*/ipb_expiry ON /*_*/ipblocks (ipb_expiry);

-- Index for removing autoblocks when a parent block is removed CREATE INDEX /*i*/ipb_parent_block_id ON /*_*/ipblocks (ipb_parent_block_id);

-- -- Partial Block Restrictions -- CREATE TABLE /*_*/ipblocks_restrictions (

-- The ipb_id from ipblocks ir_ipb_id int NOT NULL,

-- The restriction type id. ir_type tinyint(1) NOT NULL,

-- The restriction id that corrposponds to the type. Typically a Page ID or a -- Namespace ID. ir_value int NOT NULL,

PRIMARY KEY (ir_ipb_id, ir_type, ir_value) ) /*$wgDBTableOptions*/;

-- Index to query restrictions by the page or namespace. CREATE INDEX /*i*/ir_type_value ON /*_*/ipblocks_restrictions (ir_type, ir_value);

-- -- Uploaded images and other files. -- CREATE TABLE /*_*/image ( -- Filename.  -- This is also the title of the associated description page,  -- which will be in namespace 6 (NS_FILE).  img_name varchar(255) binary NOT NULL default '' PRIMARY KEY,

-- File size in bytes. img_size int unsigned NOT NULL default 0,

-- For images, size in pixels. img_width int NOT NULL default 0, img_height int 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 NOT NULL default 0,

-- Media type as defined by the MEDIATYPE_xxx constants img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE", "3D") default NULL,

-- major part of a MIME media type as defined by IANA -- see https://www.iana.org/assignments/media-types/ -- for "chemical" cf. http://dx.doi.org/10.1021/ci9803233 by the ACS img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") NOT NULL default "unknown",

-- minor part of a MIME media type as defined by IANA -- the minor parts are not required to adher to any standard -- but should be consistent throughout the database -- see https://www.iana.org/assignments/media-types/ img_minor_mime varbinary(100) NOT NULL default "unknown",

-- Foreign key to comment table, which contains the description field as entered by the uploader. -- This is displayed in image upload history and logs. img_description_id bigint unsigned NOT NULL,

-- actor_id of the uploader. img_actor bigint unsigned NOT NULL,

-- Time of the upload. img_timestamp varbinary(14) NOT NULL default '',

-- SHA-1 content hash in base-36 img_sha1 varbinary(32) NOT NULL default '' ) /*$wgDBTableOptions*/;

-- Used by Special:Newimages and ApiQueryAllImages CREATE INDEX /*i*/img_actor_timestamp ON /*_*/image (img_actor,img_timestamp); -- Used by Special:ListFiles for sort-by-size CREATE INDEX /*i*/img_size ON /*_*/image (img_size); -- Used by Special:Newimages and Special:ListFiles CREATE INDEX /*i*/img_timestamp ON /*_*/image (img_timestamp); -- Used in API and duplicate search CREATE INDEX /*i*/img_sha1 ON /*_*/image (img_sha1(10)); -- Used to get media of one type CREATE INDEX /*i*/img_media_mime ON /*_*/image (img_media_type,img_major_mime,img_minor_mime);

-- -- Previous revisions of uploaded files. -- Awkwardly, image rows have to be moved into -- this table at re-upload time. -- CREATE TABLE /*_*/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 unsigned NOT NULL default 0, oi_width int NOT NULL default 0, oi_height int NOT NULL default 0, oi_bits int NOT NULL default 0, oi_description_id bigint unsigned NOT NULL, oi_actor bigint unsigned NOT NULL, oi_timestamp binary(14) NOT NULL default '',

oi_metadata mediumblob NOT NULL, oi_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE", "3D") default NULL, oi_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") NOT NULL default "unknown", oi_minor_mime varbinary(100) NOT NULL default "unknown", oi_deleted tinyint unsigned NOT NULL default 0, oi_sha1 varbinary(32) NOT NULL default '' ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/oi_actor_timestamp ON /*_*/oldimage (oi_actor,oi_timestamp); CREATE INDEX /*i*/oi_name_timestamp ON /*_*/oldimage (oi_name,oi_timestamp); -- oi_archive_name truncated to 14 to avoid key length overflow CREATE INDEX /*i*/oi_name_archive_name ON /*_*/oldimage (oi_name,oi_archive_name(14)); CREATE INDEX /*i*/oi_sha1 ON /*_*/oldimage (oi_sha1(10));

-- -- Record of deleted file data -- CREATE TABLE /*_*/filearchive ( -- Unique row id  fa_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Original base filename; key to image.img_name, page.page_title, etc fa_name varchar(255) binary NOT NULL default '',

-- Filename of archived file, if an old revision fa_archive_name varchar(255) binary default '',

-- Which storage bin (directory tree or object store) the file data -- is stored in. Should be 'deleted' for files that have been deleted; -- any other bin is not yet in use. fa_storage_group varbinary(16),

-- SHA-1 of the file contents plus extension, used as a key for storage. -- eg 8f8a562add37052a1848ff7771a2c515db94baa9.jpg -- -- If NULL, the file was missing at deletion time or has been purged -- from the archival storage. fa_storage_key varbinary(64) default '',

-- Deletion information, if this file is deleted. fa_deleted_user int, fa_deleted_timestamp binary(14) default '', fa_deleted_reason_id bigint unsigned NOT NULL,

-- Duped fields from image fa_size int unsigned default 0, fa_width int default 0, fa_height int default 0, fa_metadata mediumblob, fa_bits int default 0, fa_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE", "3D") default NULL, fa_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") default "unknown", fa_minor_mime varbinary(100) default "unknown", fa_description_id bigint unsigned NOT NULL, fa_actor bigint unsigned NOT NULL, fa_timestamp binary(14) default '',

-- Visibility of deleted revisions, bitfield fa_deleted tinyint unsigned NOT NULL default 0,

-- sha1 hash of file content fa_sha1 varbinary(32) NOT NULL default '' ) /*$wgDBTableOptions*/;

-- pick out by image name CREATE INDEX /*i*/fa_name ON /*_*/filearchive (fa_name, fa_timestamp); -- pick out dupe files CREATE INDEX /*i*/fa_storage_group ON /*_*/filearchive (fa_storage_group, fa_storage_key); -- sort by deletion time CREATE INDEX /*i*/fa_deleted_timestamp ON /*_*/filearchive (fa_deleted_timestamp); -- sort by uploader CREATE INDEX /*i*/fa_actor_timestamp ON /*_*/filearchive (fa_actor,fa_timestamp); -- find file by sha1, 10 bytes will be enough for hashes to be indexed CREATE INDEX /*i*/fa_sha1 ON /*_*/filearchive (fa_sha1(10));

-- -- Store information about newly uploaded files before they're -- moved into the actual filestore -- CREATE TABLE /*_*/uploadstash ( us_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- the user who uploaded the file. us_user int unsigned NOT NULL,

-- file key. this is how applications actually search for the file. -- this might go away, or become the primary key. us_key varchar(255) NOT NULL,

-- the original path us_orig_path varchar(255) NOT NULL,

-- the temporary path at which the file is actually stored us_path varchar(255) NOT NULL,

-- which type of upload the file came from (sometimes) us_source_type varchar(50),

-- the date/time on which the file was added us_timestamp varbinary(14) NOT NULL,

us_status varchar(50) NOT NULL,

-- chunk counter starts at 0, current offset is stored in us_size us_chunk_inx int unsigned NULL,

-- Serialized file properties from FSFile::getProps us_props blob,

-- file size in bytes us_size int unsigned NOT NULL, -- this hash comes from FSFile::getSha1Base36, and is 31 characters us_sha1 varchar(31) NOT NULL, us_mime varchar(255), -- Media type as defined by the MEDIATYPE_xxx constants, should duplicate definition in the image table us_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE", "3D") default NULL, -- image-specific properties us_image_width int unsigned, us_image_height int unsigned, us_image_bits smallint unsigned

) /*$wgDBTableOptions*/;

-- sometimes there's a delete for all of a user's stuff. CREATE INDEX /*i*/us_user ON /*_*/uploadstash (us_user); -- pick out files by key, enforce key uniqueness CREATE UNIQUE INDEX /*i*/us_key ON /*_*/uploadstash (us_key); -- the abandoned upload cleanup script needs this CREATE INDEX /*i*/us_timestamp ON /*_*/uploadstash (us_timestamp);

-- -- Primarily a summary table for Special:Recentchanges, -- this table contains some additional info on edits from -- the last few days, see Article::editUpdates -- CREATE TABLE /*_*/recentchanges ( rc_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,  rc_timestamp varbinary(14) NOT NULL default '',

-- As in revision rc_actor bigint unsigned NOT NULL,

-- When pages are renamed, their RC entries do _not_ change. rc_namespace int NOT NULL default 0, rc_title varchar(255) binary NOT NULL default '',

-- as in revision... rc_comment_id bigint unsigned NOT NULL, rc_minor tinyint 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 unsigned NOT NULL default 0,

-- Set if this change corresponds to a page creation rc_new tinyint 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 unsigned NOT NULL default 0,

-- rev_id of the given revision rc_this_oldid int unsigned NOT NULL default 0,

-- rev_id of the prior revision, for generating diff links. rc_last_oldid int unsigned NOT NULL default 0,

-- The type of change entry (RC_EDIT,RC_NEW,RC_LOG,RC_EXTERNAL) rc_type tinyint unsigned NOT NULL default 0,

-- The source of the change entry (replaces rc_type) -- default of '' is temporary, needed for initial migration rc_source varchar(16) 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 unsigned NOT NULL default 0,

-- Recorded IP address the edit was made from, if the -- $wgPutIPinRC option is enabled. rc_ip varbinary(40) NOT NULL default '',

-- Text length in characters before -- and after the edit rc_old_len int, rc_new_len int,

-- Visibility of recent changes items, bitfield rc_deleted tinyint unsigned NOT NULL default 0,

-- Value corresponding to log_id, specific log entries rc_logid int unsigned NOT NULL default 0, -- Store log type info here, or null rc_log_type varbinary(255) NULL default NULL, -- Store log action or null rc_log_action varbinary(255) NULL default NULL, -- Log params rc_params blob NULL ) /*$wgDBTableOptions*/;

-- Special:Recentchanges CREATE INDEX /*i*/rc_timestamp ON /*_*/recentchanges (rc_timestamp);

-- Special:Watchlist CREATE INDEX /*i*/rc_namespace_title_timestamp ON /*_*/recentchanges (rc_namespace, rc_title, rc_timestamp);

-- Special:Recentchangeslinked when finding changes in pages linked from a page CREATE INDEX /*i*/rc_cur_id ON /*_*/recentchanges (rc_cur_id);

-- Special:Newpages CREATE INDEX /*i*/new_name_timestamp ON /*_*/recentchanges (rc_new,rc_namespace,rc_timestamp);

-- Blank unless $wgPutIPinRC=true (false at WMF), possibly used by extensions, -- but mostly replaced by CheckUser. CREATE INDEX /*i*/rc_ip ON /*_*/recentchanges (rc_ip);

-- Probably intended for Special:NewPages namespace filter CREATE INDEX /*i*/rc_ns_actor ON /*_*/recentchanges (rc_namespace, rc_actor);

-- SiteStats active user count, Special:ActiveUsers, Special:NewPages user filter CREATE INDEX /*i*/rc_actor ON /*_*/recentchanges (rc_actor, rc_timestamp);

-- ApiQueryRecentChanges (T140108) CREATE INDEX /*i*/rc_name_type_patrolled_timestamp ON /*_*/recentchanges (rc_namespace, rc_type, rc_patrolled, rc_timestamp);

-- Article.php and friends (T139012) CREATE INDEX /*i*/rc_this_oldid ON /*_*/recentchanges (rc_this_oldid);

CREATE TABLE /*_*/watchlist ( wl_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,  -- Key to user.user_id  wl_user int unsigned NOT NULL,

-- Key to page_namespace/page_title -- Note that users may watch pages which do not exist yet, -- or existed in the past but have been deleted. wl_namespace int NOT NULL default 0, wl_title varchar(255) binary NOT NULL default '',

-- Timestamp used to send notification e-mails and show "updated since last visit" markers on -- history and recent changes / watchlist. Set to NULL when the user visits the latest revision -- of the page, which means that they should be sent an e-mail on the next change. wl_notificationtimestamp varbinary(14)

) /*$wgDBTableOptions*/;

-- Special:Watchlist CREATE UNIQUE INDEX /*i*/wl_user ON /*_*/watchlist (wl_user, wl_namespace, wl_title);

-- Special:Movepage (WatchedItemStore::duplicateEntry) CREATE INDEX /*i*/namespace_title ON /*_*/watchlist (wl_namespace, wl_title);

-- ApiQueryWatchlistRaw changed filter CREATE INDEX /*i*/wl_user_notificationtimestamp ON /*_*/watchlist (wl_user, wl_notificationtimestamp);

-- -- 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 /*_*/searchindex ( -- Key to page_id  si_page int unsigned NOT NULL,

-- Munged version of title si_title varchar(255) NOT NULL default '',

-- Munged version of body text si_text mediumtext NOT NULL ) ENGINE=MyISAM DEFAULT CHARSET=utf8;

CREATE UNIQUE INDEX /*i*/si_page ON /*_*/searchindex (si_page); CREATE FULLTEXT INDEX /*i*/si_title ON /*_*/searchindex (si_title); CREATE FULLTEXT INDEX /*i*/si_text ON /*_*/searchindex (si_text);

-- -- Recognized interwiki link prefixes -- CREATE TABLE /*_*/interwiki ( -- The interwiki prefix, (e.g. "Meatball", or the language prefix "de")  iw_prefix varchar(32) NOT NULL PRIMARY KEY,

-- 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 blob NOT NULL,

-- The URL of the file api.php iw_api blob NOT NULL,

-- The name of the database (for a connection to be established with LBFactory::getMainLB( 'wikiid' )) iw_wikiid varchar(64) 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,

-- Boolean value indicating whether interwiki transclusions are allowed. iw_trans tinyint NOT NULL default 0 ) /*$wgDBTableOptions*/;

-- -- Used for caching expensive grouped queries -- CREATE TABLE /*_*/querycache ( -- A key name, generally the base name of of the special page.  qc_type varbinary(32) NOT NULL,

-- Some sort of stored value. Sizes, counts... qc_value int unsigned NOT NULL default 0,

-- Target namespace+title qc_namespace int NOT NULL default 0, qc_title varchar(255) binary NOT NULL default '' ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/qc_type ON /*_*/querycache (qc_type,qc_value);

-- -- For a few generic cache operations if not using Memcached -- CREATE TABLE /*_*/objectcache ( keyname varbinary(255) NOT NULL default '' PRIMARY KEY,  value mediumblob,  exptime datetime ) /*$wgDBTableOptions*/; CREATE INDEX /*i*/exptime ON /*_*/objectcache (exptime);

CREATE TABLE /*_*/logging ( -- Log ID, for referring to this specific log entry, probably for deletion and such.  log_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Symbolic keys for the general log type and the action type -- within the log. The output format will be controlled by the -- action field, but only the type controls categorization. log_type varbinary(32) NOT NULL default '', log_action varbinary(32) NOT NULL default '',

-- Timestamp. Duh. log_timestamp binary(14) NOT NULL default '19700101000000',

-- The actor who performed this action log_actor bigint unsigned NOT NULL,

-- Key to the page affected. Where a user is the target, -- this will point to the user page. log_namespace int NOT NULL default 0, log_title varchar(255) binary NOT NULL default '', log_page int unsigned NULL,

-- Key to comment_id. Comment summarizing the change. log_comment_id bigint unsigned NOT NULL,

-- miscellaneous parameters: -- LF separated list (old system) or serialized PHP array (new system) log_params blob NOT NULL,

-- rev_deleted for logs log_deleted tinyint unsigned NOT NULL default 0 ) /*$wgDBTableOptions*/;

-- Special:Log type filter CREATE INDEX /*i*/type_time ON /*_*/logging (log_type, log_timestamp);

-- Special:Log performer filter CREATE INDEX /*i*/actor_time ON /*_*/logging (log_actor, log_timestamp);

-- Special:Log title filter, log extract CREATE INDEX /*i*/page_time ON /*_*/logging (log_namespace, log_title, log_timestamp);

-- Special:Log unfiltered CREATE INDEX /*i*/times ON /*_*/logging (log_timestamp);

-- Special:Log filter by performer and type CREATE INDEX /*i*/log_actor_type_time ON /*_*/logging (log_actor, log_type, log_timestamp);

-- Apparently just used for a few maintenance pages (findMissingFiles.php, Flow). -- Could be removed? CREATE INDEX /*i*/log_page_id_time ON /*_*/logging (log_page,log_timestamp);

-- Special:Log action filter CREATE INDEX /*i*/log_type_action ON /*_*/logging (log_type, log_action, log_timestamp);

CREATE TABLE /*_*/log_search ( -- The type of ID (rev ID, log ID, rev timestamp, username)  ls_field varbinary(32) NOT NULL,  -- The value of the ID  ls_value varchar(255) NOT NULL,  -- Key to log_id  ls_log_id int unsigned NOT NULL default 0,  PRIMARY KEY (ls_field,ls_value,ls_log_id) ) /*$wgDBTableOptions*/; CREATE INDEX /*i*/ls_log_id ON /*_*/log_search (ls_log_id);

-- Jobs performed by parallel apache threads or a command-line daemon CREATE TABLE /*_*/job ( job_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Command name -- Limited to 60 to prevent key length overflow job_cmd varbinary(60) NOT NULL default '',

-- Namespace and title to act on -- Should be 0 and '' if the command does not operate on a title job_namespace int NOT NULL, job_title varchar(255) binary NOT NULL,

-- Timestamp of when the job was inserted -- NULL for jobs added before addition of the timestamp job_timestamp varbinary(14) NULL default NULL,

-- Any other parameters to the command -- Stored as a PHP serialized array, or an empty string if there are no parameters job_params mediumblob NOT NULL,

-- Random, non-unique, number used for job acquisition (for lock concurrency) job_random integer unsigned NOT NULL default 0,

-- The number of times this job has been locked job_attempts integer unsigned NOT NULL default 0,

-- Field that conveys process locks on rows via process UUIDs job_token varbinary(32) NOT NULL default '',

-- Timestamp when the job was locked job_token_timestamp varbinary(14) NULL default NULL,

-- Base 36 SHA1 of the job parameters relevant to detecting duplicates job_sha1 varbinary(32) NOT NULL default '' ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/job_sha1 ON /*_*/job (job_sha1); CREATE INDEX /*i*/job_cmd_token ON /*_*/job (job_cmd,job_token,job_random); CREATE INDEX /*i*/job_cmd_token_id ON /*_*/job (job_cmd,job_token,job_id); CREATE INDEX /*i*/job_cmd ON /*_*/job (job_cmd, job_namespace, job_title, job_params(128)); CREATE INDEX /*i*/job_timestamp ON /*_*/job (job_timestamp);

-- Details of updates to cached special pages CREATE TABLE /*_*/querycache_info ( -- Special page name  -- Corresponds to a qc_type value  qci_type varbinary(32) NOT NULL default '' PRIMARY KEY,

-- Timestamp of last update qci_timestamp binary(14) NOT NULL default '19700101000000' ) /*$wgDBTableOptions*/;

-- For each redirect, this table contains exactly one row defining its target CREATE TABLE /*_*/redirect ( -- Key to the page_id of the redirect page  rd_from int unsigned NOT NULL default 0 PRIMARY KEY,

-- Key to page_namespace/page_title of the target page. -- The target page may or may not exist, and due to renames -- and deletions may refer to different page records as time -- goes by. rd_namespace int NOT NULL default 0, rd_title varchar(255) binary NOT NULL default '', rd_interwiki varchar(32) default NULL, rd_fragment varchar(255) binary default NULL ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/rd_ns_title ON /*_*/redirect (rd_namespace,rd_title,rd_from);

-- Used for caching expensive grouped queries that need two links (for example double-redirects) CREATE TABLE /*_*/querycachetwo ( -- A key name, generally the base name of of the special page.  qcc_type varbinary(32) NOT NULL,

-- Some sort of stored value. Sizes, counts... qcc_value int unsigned NOT NULL default 0,

-- Target namespace+title qcc_namespace int NOT NULL default 0, qcc_title varchar(255) binary NOT NULL default '',

-- Target namespace+title2 qcc_namespacetwo int NOT NULL default 0, qcc_titletwo varchar(255) binary NOT NULL default '' ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/qcc_type ON /*_*/querycachetwo (qcc_type,qcc_value); CREATE INDEX /*i*/qcc_title ON /*_*/querycachetwo (qcc_type,qcc_namespace,qcc_title); CREATE INDEX /*i*/qcc_titletwo ON /*_*/querycachetwo (qcc_type,qcc_namespacetwo,qcc_titletwo);

-- Used for storing page restrictions (i.e. protection levels) CREATE TABLE /*_*/page_restrictions ( -- Field for an ID for this restrictions row (sort-key for Special:ProtectedPages)  pr_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,  -- Page to apply restrictions to (Foreign Key to page).  pr_page int NOT NULL,  -- The protection type (edit, move, etc)  pr_type varbinary(60) NOT NULL,  -- The protection level (Sysop, autoconfirmed, etc)  pr_level varbinary(60) NOT NULL,  -- Whether or not to cascade the protection down to pages transcluded.  pr_cascade tinyint NOT NULL,  -- Field for future support of per-user restriction.  pr_user int unsigned NULL,  -- Field for time-limited protection.  pr_expiry varbinary(14) NULL ) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/pr_pagetype ON /*_*/page_restrictions (pr_page,pr_type); CREATE INDEX /*i*/pr_typelevel ON /*_*/page_restrictions (pr_type,pr_level); CREATE INDEX /*i*/pr_level ON /*_*/page_restrictions (pr_level); CREATE INDEX /*i*/pr_cascade ON /*_*/page_restrictions (pr_cascade);

-- Protected titles - nonexistent pages that have been protected CREATE TABLE /*_*/protected_titles ( pt_namespace int NOT NULL,  pt_title varchar(255) binary NOT NULL,  pt_user int unsigned NOT NULL,  pt_reason_id bigint unsigned NOT NULL,  pt_timestamp binary(14) NOT NULL,  pt_expiry varbinary(14) NOT NULL default '',  pt_create_perm varbinary(60) NOT NULL,

PRIMARY KEY (pt_namespace,pt_title) ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/pt_timestamp ON /*_*/protected_titles (pt_timestamp);

-- Name/value pairs indexed by page_id CREATE TABLE /*_*/page_props ( pp_page int NOT NULL,  pp_propname varbinary(60) NOT NULL,  pp_value blob NOT NULL,  pp_sortkey float DEFAULT NULL,

PRIMARY KEY (pp_page,pp_propname) ) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/pp_propname_page ON /*_*/page_props (pp_propname,pp_page); CREATE UNIQUE INDEX /*i*/pp_propname_sortkey_page ON /*_*/page_props (pp_propname,pp_sortkey,pp_page);

-- A table to log updates, one text key row per update. CREATE TABLE /*_*/updatelog ( ul_key varchar(255) NOT NULL PRIMARY KEY,  ul_value blob ) /*$wgDBTableOptions*/;

-- A table to track tags for revisions, logs and recent changes. CREATE TABLE /*_*/change_tag ( ct_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,  -- RCID for the change  ct_rc_id int NULL,  -- LOGID for the change  ct_log_id int unsigned NULL,  -- REVID for the change  ct_rev_id int unsigned NULL,  -- Parameters for the tag; used by some extensions  ct_params blob NULL,  -- Foreign key to change_tag_def row  ct_tag_id int unsigned NOT NULL ) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/change_tag_rc_tag_id ON /*_*/change_tag (ct_rc_id,ct_tag_id); CREATE UNIQUE INDEX /*i*/change_tag_log_tag_id ON /*_*/change_tag (ct_log_id,ct_tag_id); CREATE UNIQUE INDEX /*i*/change_tag_rev_tag_id ON /*_*/change_tag (ct_rev_id,ct_tag_id); -- Covering index, so we can pull all the info only out of the index. CREATE INDEX /*i*/change_tag_tag_id_id ON /*_*/change_tag (ct_tag_id,ct_rc_id,ct_rev_id,ct_log_id);

-- Table for storing localisation data CREATE TABLE /*_*/l10n_cache ( -- Language code  lc_lang varbinary(32) NOT NULL,  -- Cache key  lc_key varchar(255) NOT NULL,  -- Value  lc_value mediumblob NOT NULL,  PRIMARY KEY (lc_lang, lc_key) ) /*$wgDBTableOptions*/;

-- Table caching which local files a module depends on that aren't -- registered directly, used for fast retrieval of file dependency. -- Currently only used for tracking images that CSS depends on CREATE TABLE /*_*/module_deps ( -- Module name  md_module varbinary(255) NOT NULL,  -- Module context vary (includes skin and language; called "md_skin" for legacy reasons)  md_skin varbinary(32) NOT NULL,  -- JSON blob with file dependencies  md_deps mediumblob NOT NULL,  PRIMARY KEY (md_module,md_skin) ) /*$wgDBTableOptions*/;

-- Holds all the sites known to the wiki. CREATE TABLE /*_*/sites ( -- Numeric id of the site  site_id                    INT UNSIGNED        NOT NULL PRIMARY KEY AUTO_INCREMENT,

-- Global identifier for the site, ie 'enwiktionary' site_global_key           varbinary(32)       NOT NULL,

-- Type of the site, ie 'mediawiki' site_type                 varbinary(32)       NOT NULL,

-- Group of the site, ie 'wikipedia' site_group                varbinary(32)       NOT NULL,

-- Source of the site data, ie 'local', 'wikidata', 'my-magical-repo' site_source               varbinary(32)       NOT NULL,

-- Language code of the sites primary language. site_language             varbinary(32)       NOT NULL,

-- Protocol of the site, ie 'http://', 'irc://', '//' -- This field is an index for lookups and is build from type specific data in site_data. site_protocol             varbinary(32)       NOT NULL,

-- Domain of the site in reverse order, ie 'org.mediawiki.www.' -- This field is an index for lookups and is build from type specific data in site_data. site_domain               VARCHAR(255)        NOT NULL,

-- Type dependent site data. site_data                 BLOB                NOT NULL,

-- If site.tld/path/key:pageTitle should forward users to the page on  -- the actual site, where "key" is the local identifier. site_forward             bool                NOT NULL,

-- Type dependent site config. -- For instance if template transclusion should be allowed if it's a MediaWiki. site_config              BLOB                NOT NULL ) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/sites_global_key ON /*_*/sites (site_global_key); CREATE INDEX /*i*/sites_type ON /*_*/sites (site_type); CREATE INDEX /*i*/sites_group ON /*_*/sites (site_group); CREATE INDEX /*i*/sites_source ON /*_*/sites (site_source); CREATE INDEX /*i*/sites_language ON /*_*/sites (site_language); CREATE INDEX /*i*/sites_protocol ON /*_*/sites (site_protocol); CREATE INDEX /*i*/sites_domain ON /*_*/sites (site_domain); CREATE INDEX /*i*/sites_forward ON /*_*/sites (site_forward);

-- Links local site identifiers to their corresponding site. CREATE TABLE /*_*/site_identifiers ( -- Key on site.site_id  si_site                    INT UNSIGNED        NOT NULL,

-- local key type, ie 'interwiki' or 'langlink' si_type                   varbinary(32)       NOT NULL,

-- local key value, ie 'en' or 'wiktionary' si_key                    varbinary(32)       NOT NULL,

PRIMARY KEY (si_type, si_key) ) /*$wgDBTableOptions*/;

CREATE INDEX /*i*/site_ids_site ON /*_*/site_identifiers (si_site); CREATE INDEX /*i*/site_ids_key ON /*_*/site_identifiers (si_key);

-- Table defining tag names for IDs. Also stores hit counts to avoid expensive queries on change_tag CREATE TABLE /*_*/change_tag_def (   -- Numerical ID of the tag (ct_tag_id refers to this)    ctd_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,    -- Symbolic name of the tag (what would previously be put in ct_tag)    ctd_name varbinary(255) NOT NULL,    -- Whether this tag was defined manually by a privileged user using Special:Tags    ctd_user_defined tinyint(1) NOT NULL,    -- Number of times this tag was used    ctd_count bigint unsigned NOT NULL default 0 ) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/ctd_name ON /*_*/change_tag_def (ctd_name); CREATE INDEX /*i*/ctd_count ON /*_*/change_tag_def (ctd_count); CREATE INDEX /*i*/ctd_user_defined ON /*_*/change_tag_def (ctd_user_defined);

-- vim: sw=2 sts=2 et