MediaWiki/tables

Mediawiki

./maintenance/tables.sql

-- 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.

-- -- 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. --

-- -- 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 '', -- 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), UNIQUE INDEX user_name (user_name), INDEX (user_email_token)

) TYPE=InnoDB;

-- -- 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 /*$wgDBprefix*/user_groups ( -- Key to user_id  ug_user int(5) 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 char(16) NOT NULL default '',  PRIMARY KEY (ug_user,ug_group),  KEY (ug_group) ) TYPE=InnoDB;

-- Stores notifications of user talk page changes, for the display -- of the "you have new messages" box CREATE TABLE /*$wgDBprefix*/user_newtalk ( user_id int(5) NOT NULL default '0', user_ip varchar(40) NOT NULL default '', INDEX user_id (user_id), 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 ( -- 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 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 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. -- Aside from 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. -- 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), UNIQUE INDEX name_title (page_namespace,page_title), -- Special-purpose indexes INDEX (page_random), INDEX (page_len)

) TYPE=InnoDB;

-- -- 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), UNIQUE INDEX rev_id (rev_id), INDEX rev_timestamp (rev_timestamp), INDEX page_timestamp (rev_page,rev_timestamp), INDEX user_timestamp (rev_user,rev_timestamp), INDEX usertext_timestamp (rev_user_text,rev_timestamp)

) TYPE=InnoDB;

-- -- 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 mediumblob 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)

) TYPE=InnoDB;

-- -- 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 int 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.  -- Text may be gzipped or otherwise funky.  ar_text mediumblob 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)

) TYPE=InnoDB;

-- -- Track page-to-page hyperlinks within the wiki. -- CREATE TABLE /*$wgDBprefix*/pagelinks ( -- Key to the page_id of the page containing the link.  pl_from int(8) unsigned 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 '',  UNIQUE KEY pl_from(pl_from,pl_namespace,pl_title),  KEY (pl_namespace,pl_title)

) TYPE=InnoDB;

-- -- 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 /*$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)

) TYPE=InnoDB;

-- -- Track category inclusions *used inline* -- 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...  --  -- For MySQL 4.1+ with charset set to utf8, the sort key *index*  -- needs cut to be smaller than 1024 bytes (at 3 bytes per char).  -- To sort properly on the shorter key, this field needs to be  -- the same shortness.  cl_sortkey varchar(86) 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), -- We always sort within a given category... KEY cl_sortkey(cl_to,cl_sortkey), -- Not really used? KEY cl_timestamp(cl_to,cl_timestamp)

) TYPE=InnoDB;

-- -- 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 '[['  -- See isCountable in includes/Article.php  ss_good_articles bigint(20) unsigned default '0',  -- Total pages, theoretically equal to SELECT COUNT(*) FROM page; except faster  ss_total_pages bigint(20) default -1,

-- Number of users, theoretically equal to SELECT COUNT(*) FROM user; ss_users bigint(20) default -1,

-- Deprecated, no longer updated as of 1.5 ss_admins int(10) default -1,

UNIQUE KEY ss_row_id (ss_row_id)

) TYPE=InnoDB;

-- -- Stores an ID for every time any article is visited; -- depending on $wgHitcounterUpdateFreq, it is -- periodically cleared and the page_counter column -- in the page table updated for the all articles -- that have been visited.) -- CREATE TABLE /*$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_address (ipb_address), INDEX ipb_user (ipb_user)

) TYPE=InnoDB;

-- -- 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',  -- Media type as defined by the MEDIATYPE_xxx constants  img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,  -- major part of a MIME media type as defined by IANA  -- see http://www.iana.org/assignments/media-types/  img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart") 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 http://www.iana.org/assignments/media-types/ img_minor_mime varchar(32) NOT NULL default "unknown", -- 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)

) TYPE=InnoDB;

-- -- 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,  oi_bits int(3) NOT NULL default 0,  oi_description tinyblob NOT NULL default ,  oi_user int(5) unsigned NOT NULL default '0',  oi_user_text varchar(255) binary NOT NULL default ,  oi_timestamp char(14) binary NOT NULL default '',

INDEX oi_name (oi_name(10))

) TYPE=InnoDB;

-- -- 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 int 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), INDEX rc_timestamp (rc_timestamp), INDEX rc_namespace_title (rc_namespace, rc_title), INDEX rc_cur_id (rc_cur_id), INDEX new_name_timestamp(rc_new,rc_namespace,rc_timestamp), INDEX rc_ip (rc_ip)

) TYPE=InnoDB;

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 int 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)

) TYPE=InnoDB;

-- -- 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)

) TYPE=InnoDB;

-- -- 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,  -- Boolean value indicating whether interwiki transclusions are allowed.  iw_trans TINYINT(1) NOT NULL DEFAULT 0,  UNIQUE KEY iw_prefix (iw_prefix)

) TYPE=InnoDB;

-- -- 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 int NOT NULL default '0',  qc_title char(255) binary NOT NULL default '',  KEY (qc_type,qc_value)

) TYPE=InnoDB;

-- -- For a few generic cache operations if not using Memcached -- CREATE TABLE /*$wgDBprefix*/objectcache ( keyname char(255) binary not null default '',  value mediumblob,  exptime datetime,  unique key (keyname),  key (exptime)

) TYPE=InnoDB;

-- For article validation CREATE TABLE /*$wgDBprefix*/validate ( val_user int(11) NOT NULL default '0',  val_page int(11) unsigned NOT NULL default '0',  val_revision int(11) unsigned NOT NULL default '0',  val_type int(11) unsigned NOT NULL default '0',  val_value int(11) default '0',  val_comment varchar(255) NOT NULL default ,  val_ip varchar(20) NOT NULL default ,  KEY val_user (val_user,val_revision) ) TYPE=InnoDB;

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  -- action field, but only the type controls categorization.  log_type char(10) NOT NULL default ,  log_action char(10) NOT NULL default ,  -- Timestamp. Duh.  log_timestamp char(14) NOT NULL default '19700101000000',  -- The user who performed this action; key to user_id  log_user int unsigned NOT NULL default 0,  -- 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 ,  -- Freeform text. Interpreted as edit history comments.  log_comment varchar(255) NOT NULL default ,  -- LF separated list of miscellaneous parameters  log_params blob NOT NULL default '',

KEY type_time (log_type, log_timestamp), KEY user_time (log_user, log_timestamp), KEY page_time (log_namespace, log_title, log_timestamp)

) TYPE=InnoDB;

-- Hold group name and description --CREATE TABLE /*$wgDBprefix*/groups ( -- gr_id int(5) unsigned NOT NULL auto_increment, --  gr_name varchar(50) NOT NULL default , --  gr_description varchar(255) NOT NULL default , --  gr_rights tinyblob, --  PRIMARY KEY  (gr_id) -- --) TYPE=InnoDB;

CREATE TABLE /*$wgDBprefix*/trackbacks (	tb_id		INTEGER AUTO_INCREMENT PRIMARY KEY,	tb_page		INTEGER REFERENCES page(page_id) ON DELETE CASCADE,	tb_title	VARCHAR(255) NOT NULL,	tb_url		VARCHAR(255) NOT NULL,	tb_ex		TEXT,	tb_name		VARCHAR(255),

INDEX (tb_page) );