maintenance/tables.sql

   1 -- SQL to create the initial tables for the MediaWiki database.
   2 -- This is read and executed by the install script; you should
   3 -- not have to run it by itself unless doing a manual install.
   4
   5 --
   6 -- General notes:
   7 --
   8 -- If possible, create tables as InnoDB to benefit from the
   9 -- superior resiliency against crashes and ability to read
  10 -- during writes (and write during reads!)
  11 --
  12 -- Only the 'searchindex' table requires MyISAM due to the
  13 -- requirement for fulltext index support, which is missing
  14 -- from InnoDB.
  15 --
  16 --
  17 -- The MySQL table backend for MediaWiki currently uses
  18 -- 14-character CHAR or VARCHAR fields to store timestamps.
  19 -- The format is YYYYMMDDHHMMSS, which is derived from the
  20 -- text format of MySQL's TIMESTAMP fields.
  21 --
  22 -- Historically TIMESTAMP fields were used, but abandoned
  23 -- in early 2002 after a lot of trouble with the fields
  24 -- auto-updating.
  25 --
  26 -- The PostgreSQL backend uses DATETIME fields for timestamps,
  27 -- and we will migrate the MySQL definitions at some point as
  28 -- well.
  29 --
  30 --
  31 -- The /*$wgDBprefix*/ comments in this and other files are
  32 -- replaced with the defined table prefix by the installer
  33 -- and updater scripts. If you are installing or running
  34 -- updates manually, you will need to manually insert the
  35 -- table prefix if any when running these scripts.
  36 --
  37
  38
  39 --
  40 -- The user table contains basic account information,
  41 -- authentication keys, etc.
  42 --
  43 -- Some multi-wiki sites may share a single central user table
  44 -- between separate wikis using the $wgSharedDB setting.
  45 --
  46 -- Note that when a external authentication plugin is used,
  47 -- user table entries still need to be created to store
  48 -- preferences and to key tracking information in the other
  49 -- tables.
  50 --
  51 CREATE TABLE /*$wgDBprefix*/user (
  52   user_id int(5) unsigned NOT NULL auto_increment,
  53
  54   -- Usernames must be unique, must not be in the form of
  55   -- an IP address. _Shouldn't_ allow slashes or case
  56   -- conflicts. Spaces are allowed, and are _not_ converted
  57   -- to underscores like titles. See the User::newFromName() for
  58   -- the specific tests that usernames have to pass.
  59   user_name varchar(255) binary NOT NULL default '',
  60
  61   -- Optional 'real name' to be displayed in credit listings
  62   user_real_name varchar(255) binary NOT NULL default '',
  63
  64   -- Password hashes, normally hashed like so:
  65   -- MD5(CONCAT(user_id,'-',MD5(plaintext_password))), see
  66   -- wfEncryptPassword() in GlobalFunctions.php
  67   user_password tinyblob NOT NULL default '',
  68
  69   -- When using 'mail me a new password', a random
  70   -- password is generated and the hash stored here.
  71   -- The previous password is left in place until
  72   -- someone actually logs in with the new password,
  73   -- at which point the hash is moved to user_password
  74   -- and the old password is invalidated.
  75   user_newpassword tinyblob NOT NULL default '',
  76
  77   -- Note: email should be restricted, not public info.
  78   -- Same with passwords.
  79   user_email tinytext NOT NULL default '',
  80
  81   -- Newline-separated list of name=value defining the user
  82   -- preferences
  83   user_options blob NOT NULL default '',
  84
  85   -- This is a timestamp which is updated when a user
  86   -- logs in, logs out, changes preferences, or performs
  87   -- some other action requiring HTML cache invalidation
  88   -- to ensure that the UI is updated.
  89   user_touched char(14) binary NOT NULL default '',
  90
  91   -- A pseudorandomly generated value that is stored in
  92   -- a cookie when the "remember password" feature is
  93   -- used (previously, a hash of the password was used, but
  94   -- this was vulnerable to cookie-stealing attacks)
  95   user_token char(32) binary NOT NULL default '',
  96
  97   -- Initially NULL; when a user's e-mail address has been
  98   -- validated by returning with a mailed token, this is
  99   -- set to the current timestamp.
 100   user_email_authenticated CHAR(14) BINARY,
 101
 102   -- Randomly generated token created when the e-mail address
 103   -- is set and a confirmation test mail sent.
 104   user_email_token CHAR(32) BINARY,
 105
 106   -- Expiration date for the user_email_token
 107   user_email_token_expires CHAR(14) BINARY,
 108
 109   PRIMARY KEY user_id (user_id),
 110   UNIQUE INDEX user_name (user_name),
 111   INDEX (user_email_token)
 112
 113 ) TYPE=InnoDB;
 114
 115 --
 116 -- User permissions have been broken out to a separate table;
 117 -- this allows sites with a shared user table to have different
 118 -- permissions assigned to a user in each project.
 119 --
 120 -- This table replaces the old user_rights field which used a
 121 -- comma-separated blob.
 122 --
 123 CREATE TABLE /*$wgDBprefix*/user_groups (
 124   -- Key to user_id
 125   ug_user int(5) unsigned NOT NULL default '0',
 126
 127   -- Group names are short symbolic string keys.
 128   -- The set of group names is open-ended, though in practice
 129   -- only some predefined ones are likely to be used.
 130   --
 131   -- At runtime $wgGroupPermissions will associate group keys
 132   -- with particular permissions. A user will have the combined
 133   -- permissions of any group they're explicitly in, plus
 134   -- the implicit '*' and 'user' groups.
 135   ug_group char(16) NOT NULL default '',
 136
 137   PRIMARY KEY (ug_user,ug_group),
 138   KEY (ug_group)
 139 ) TYPE=InnoDB;
 140
 141 -- Stores notifications of user talk page changes, for the display
 142 -- of the "you have new messages" box
 143 CREATE TABLE /*$wgDBprefix*/user_newtalk (
 144   -- Key to user.user_id
 145   user_id int(5) NOT NULL default '0',
 146   -- If the user is an anonymous user hir IP address is stored here
 147   -- since the user_id of 0 is ambiguous
 148   user_ip varchar(40) NOT NULL default '',
 149   INDEX user_id (user_id),
 150   INDEX user_ip (user_ip)
 151 );
 152
 153
 154 --
 155 -- Core of the wiki: each page has an entry here which identifies
 156 -- it by title and contains some essential metadata.
 157 --
 158 CREATE TABLE /*$wgDBprefix*/page (
 159   -- Unique identifier number. The page_id will be preserved across
 160   -- edits and rename operations, but not deletions and recreations.
 161   page_id int(8) unsigned NOT NULL auto_increment,
 162
 163   -- A page name is broken into a namespace and a title.
 164   -- The namespace keys are UI-language-independent constants,
 165   -- defined in includes/Defines.php
 166   page_namespace int NOT NULL,
 167
 168   -- The rest of the title, as text.
 169   -- Spaces are transformed into underscores in title storage.
 170   page_title varchar(255) binary NOT NULL,
 171
 172   -- Comma-separated set of permission keys indicating who
 173   -- can move or edit the page.
 174   page_restrictions tinyblob NOT NULL default '',
 175
 176   -- Number of times this page has been viewed.
 177   page_counter bigint(20) unsigned NOT NULL default '0',
 178
 179   -- 1 indicates the article is a redirect.
 180   page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 181
 182   -- 1 indicates this is a new entry, with only one edit.
 183   -- Not all pages with one edit are new pages.
 184   page_is_new tinyint(1) unsigned NOT NULL default '0',
 185
 186   -- Random value between 0 and 1, used for Special:Randompage
 187   page_random real unsigned NOT NULL,
 188
 189   -- This timestamp is updated whenever the page changes in
 190   -- a way requiring it to be re-rendered, invalidating caches.
 191   -- Aside from editing this includes permission changes,
 192   -- creation or deletion of linked pages, and alteration
 193   -- of contained templates.
 194   page_touched char(14) binary NOT NULL default '',
 195
 196   -- Handy key to revision.rev_id of the current revision.
 197   -- This may be 0 during page creation, but that shouldn't
 198   -- happen outside of a transaction... hopefully.
 199   page_latest int(8) unsigned NOT NULL,
 200
 201   -- Uncompressed length in bytes of the page's current source text.
 202   page_len int(8) unsigned NOT NULL,
 203
 204   PRIMARY KEY page_id (page_id),
 205   UNIQUE INDEX name_title (page_namespace,page_title),
 206
 207   -- Special-purpose indexes
 208   INDEX (page_random),
 209   INDEX (page_len)
 210
 211 ) TYPE=InnoDB;
 212
 213 --
 214 -- Every edit of a page creates also a revision row.
 215 -- This stores metadata about the revision, and a reference
 216 -- to the text storage backend.
 217 --
 218 CREATE TABLE /*$wgDBprefix*/revision (
 219   rev_id int(8) unsigned NOT NULL auto_increment,
 220
 221   -- Key to page_id. This should _never_ be invalid.
 222   rev_page int(8) unsigned NOT NULL,
 223
 224   -- Key to text.old_id, where the actual bulk text is stored.
 225   -- It's possible for multiple revisions to use the same text,
 226   -- for instance revisions where only metadata is altered
 227   -- or a rollback to a previous version.
 228   rev_text_id int(8) unsigned NOT NULL,
 229
 230   -- Text comment summarizing the change.
 231   -- This text is shown in the history and other changes lists,
 232   -- rendered in a subset of wiki markup by Linker::formatComment()
 233   rev_comment tinyblob NOT NULL default '',
 234
 235   -- Key to user.user_id of the user who made this edit.
 236   -- Stores 0 for anonymous edits and for some mass imports.
 237   rev_user int(5) unsigned NOT NULL default '0',
 238
 239   -- Text username or IP address of the editor.
 240   rev_user_text varchar(255) binary NOT NULL default '',
 241
 242   -- Timestamp
 243   rev_timestamp char(14) binary NOT NULL default '',
 244
 245   -- Records whether the user marked the 'minor edit' checkbox.
 246   -- Many automated edits are marked as minor.
 247   rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 248
 249   -- Not yet used; reserved for future changes to the deletion system.
 250   rev_deleted tinyint(1) unsigned NOT NULL default '0',
 251
 252   PRIMARY KEY rev_page_id (rev_page, rev_id),
 253   UNIQUE INDEX rev_id (rev_id),
 254   INDEX rev_timestamp (rev_timestamp),
 255   INDEX page_timestamp (rev_page,rev_timestamp),
 256   INDEX user_timestamp (rev_user,rev_timestamp),
 257   INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 258
 259 ) TYPE=InnoDB;
 260
 261
 262 --
 263 -- Holds text of individual page revisions.
 264 --
 265 -- Field names are a holdover from the 'old' revisions table in
 266 -- MediaWiki 1.4 and earlier: an upgrade will transform that
 267 -- table into the 'text' table to minimize unnecessary churning
 268 -- and downtime. If upgrading, the other fields will be left unused.
 269 --
 270 CREATE TABLE /*$wgDBprefix*/text (
 271   -- Unique text storage key number.
 272   -- Note that the 'oldid' parameter used in URLs does *not*
 273   -- refer to this number anymore, but to rev_id.
 274   --
 275   -- revision.rev_text_id is a key to this column
 276   old_id int(8) unsigned NOT NULL auto_increment,
 277
 278   -- Depending on the contents of the old_flags field, the text
 279   -- may be convenient plain text, or it may be funkily encoded.
 280   old_text mediumblob NOT NULL default '',
 281
 282   -- Comma-separated list of flags:
 283   -- gzip: text is compressed with PHP's gzdeflate() function.
 284   -- utf8: text was stored as UTF-8.
 285   --       If $wgLegacyEncoding option is on, rows *without* this flag
 286   --       will be converted to UTF-8 transparently at load time.
 287   -- object: text field contained a serialized PHP object.
 288   --         The object either contains multiple versions compressed
 289   --         together to achieve a better compression ratio, or it refers
 290   --         to another row where the text can be found.
 291   old_flags tinyblob NOT NULL default '',
 292
 293   PRIMARY KEY old_id (old_id)
 294
 295 ) TYPE=InnoDB;
 296
 297 --
 298 -- Holding area for deleted articles, which may be viewed
 299 -- or restored by admins through the Special:Undelete interface.
 300 -- The fields generally correspond to the page, revision, and text
 301 -- fields, with several caveats.
 302 --
 303 CREATE TABLE /*$wgDBprefix*/archive (
 304   ar_namespace int NOT NULL default '0',
 305   ar_title varchar(255) binary NOT NULL default '',
 306
 307   -- Newly deleted pages will not store text in this table,
 308   -- but will reference the separately existing text rows.
 309   -- This field is retained for backwards compatibility,
 310   -- so old archived pages will remain accessible after
 311   -- upgrading from 1.4 to 1.5.
 312   -- Text may be gzipped or otherwise funky.
 313   ar_text mediumblob NOT NULL default '',
 314
 315   -- Basic revision stuff...
 316   ar_comment tinyblob NOT NULL default '',
 317   ar_user int(5) unsigned NOT NULL default '0',
 318   ar_user_text varchar(255) binary NOT NULL,
 319   ar_timestamp char(14) binary NOT NULL default '',
 320   ar_minor_edit tinyint(1) NOT NULL default '0',
 321
 322   -- See ar_text note.
 323   ar_flags tinyblob NOT NULL default '',
 324
 325   -- When revisions are deleted, their unique rev_id is stored
 326   -- here so it can be retained after undeletion. This is necessary
 327   -- to retain permalinks to given revisions after accidental delete
 328   -- cycles or messy operations like history merges.
 329   --
 330   -- Old entries from 1.4 will be NULL here, and a new rev_id will
 331   -- be created on undeletion for those revisions.
 332   ar_rev_id int(8) unsigned,
 333
 334   -- For newly deleted revisions, this is the text.old_id key to the
 335   -- actual stored text. To avoid breaking the block-compression scheme
 336   -- and otherwise making storage changes harder, the actual text is
 337   -- *not* deleted from the text table, merely hidden by removal of the
 338   -- page and revision entries.
 339   --
 340   -- Old entries deleted under 1.2-1.4 will have NULL here, and their
 341   -- ar_text and ar_flags fields will be used to create a new text
 342   -- row upon undeletion.
 343   ar_text_id int(8) unsigned,
 344
 345   KEY name_title_timestamp (ar_namespace,ar_title,ar_timestamp)
 346
 347 ) TYPE=InnoDB;
 348
 349
 350 --
 351 -- Track page-to-page hyperlinks within the wiki.
 352 --
 353 CREATE TABLE /*$wgDBprefix*/pagelinks (
 354   -- Key to the page_id of the page containing the link.
 355   pl_from int(8) unsigned NOT NULL default '0',
 356
 357   -- Key to page_namespace/page_title of the target page.
 358   -- The target page may or may not exist, and due to renames
 359   -- and deletions may refer to different page records as time
 360   -- goes by.
 361   pl_namespace int NOT NULL default '0',
 362   pl_title varchar(255) binary NOT NULL default '',
 363
 364   UNIQUE KEY pl_from(pl_from,pl_namespace,pl_title),
 365   KEY (pl_namespace,pl_title)
 366
 367 ) TYPE=InnoDB;
 368
 369
 370 --
 371 -- Track links to images *used inline*
 372 -- We don't distinguish live from broken links here, so
 373 -- they do not need to be changed on upload/removal.
 374 --
 375 CREATE TABLE /*$wgDBprefix*/imagelinks (
 376   -- Key to page_id of the page containing the image / media link.
 377   il_from int(8) unsigned NOT NULL default '0',
 378
 379   -- Filename of target image.
 380   -- This is also the page_title of the file's description page;
 381   -- all such pages are in namespace 6 (NS_IMAGE).
 382   il_to varchar(255) binary NOT NULL default '',
 383
 384   UNIQUE KEY il_from(il_from,il_to),
 385   KEY (il_to)
 386
 387 ) TYPE=InnoDB;
 388
 389 --
 390 -- Track category inclusions *used inline*
 391 -- This tracks a single level of category membership
 392 -- (folksonomic tagging, really).
 393 --
 394 CREATE TABLE /*$wgDBprefix*/categorylinks (
 395   -- Key to page_id of the page defined as a category member.
 396   cl_from int(8) unsigned NOT NULL default '0',
 397
 398   -- Name of the category.
 399   -- This is also the page_title of the category's description page;
 400   -- all such pages are in namespace 14 (NS_CATEGORY).
 401   cl_to varchar(255) binary NOT NULL default '',
 402
 403   -- The title of the linking page, or an optional override
 404   -- to determine sort order. Sorting is by binary order, which
 405   -- isn't always ideal, but collations seem to be an exciting
 406   -- and dangerous new world in MySQL...
 407   --
 408   -- For MySQL 4.1+ with charset set to utf8, the sort key *index*
 409   -- needs cut to be smaller than 1024 bytes (at 3 bytes per char).
 410   -- To sort properly on the shorter key, this field needs to be
 411   -- the same shortness.
 412   cl_sortkey varchar(86) binary NOT NULL default '',
 413
 414   -- This isn't really used at present. Provided for an optional
 415   -- sorting method by approximate addition time.
 416   cl_timestamp timestamp NOT NULL,
 417
 418   UNIQUE KEY cl_from(cl_from,cl_to),
 419
 420   -- We always sort within a given category...
 421   KEY cl_sortkey(cl_to,cl_sortkey),
 422
 423   -- Not really used?
 424   KEY cl_timestamp(cl_to,cl_timestamp)
 425
 426 ) TYPE=InnoDB;
 427
 428 --
 429 -- Contains a single row with some aggregate info
 430 -- on the state of the site.
 431 --
 432 CREATE TABLE /*$wgDBprefix*/site_stats (
 433   -- The single row should contain 1 here.
 434   ss_row_id int(8) unsigned NOT NULL,
 435
 436   -- Total number of page views, if hit counters are enabled.
 437   ss_total_views bigint(20) unsigned default '0',
 438
 439   -- Total number of edits performed.
 440   ss_total_edits bigint(20) unsigned default '0',
 441
 442   -- An approximate count of pages matching the following criteria:
 443   -- * in namespace 0
 444   -- * not a redirect
 445   -- * contains the text '[['
 446   -- See Article::isCountable() in includes/Article.php
 447   ss_good_articles bigint(20) unsigned default '0',
 448
 449   -- Total pages, theoretically equal to SELECT COUNT(*) FROM page; except faster
 450   ss_total_pages bigint(20) default '-1',
 451
 452   -- Number of users, theoretically equal to SELECT COUNT(*) FROM user;
 453   ss_users bigint(20) default '-1',
 454
 455   -- Deprecated, no longer updated as of 1.5
 456   ss_admins int(10) default '-1',
 457
 458   UNIQUE KEY ss_row_id (ss_row_id)
 459
 460 ) TYPE=InnoDB;
 461
 462 --
 463 -- Stores an ID for every time any article is visited;
 464 -- depending on $wgHitcounterUpdateFreq, it is
 465 -- periodically cleared and the page_counter column
 466 -- in the page table updated for the all articles
 467 -- that have been visited.)
 468 --
 469 CREATE TABLE /*$wgDBprefix*/hitcounter (
 470   hc_id INTEGER UNSIGNED NOT NULL
 471 ) TYPE=HEAP MAX_ROWS=25000;
 472
 473
 474 --
 475 -- The internet is full of jerks, alas. Sometimes it's handy
 476 -- to block a vandal or troll account.
 477 --
 478 CREATE TABLE /*$wgDBprefix*/ipblocks (
 479   -- Primary key, introduced for privacy.
 480   ipb_id int(8) NOT NULL auto_increment,
 481
 482   -- Blocked IP address in dotted-quad form or user name.
 483   ipb_address varchar(40) binary NOT NULL default '',
 484
 485   -- Blocked user ID or 0 for IP blocks.
 486   ipb_user int(8) unsigned NOT NULL default '0',
 487
 488   -- User ID who made the block.
 489   ipb_by int(8) unsigned NOT NULL default '0',
 490
 491   -- Text comment made by blocker.
 492   ipb_reason tinyblob NOT NULL default '',
 493
 494   -- Creation (or refresh) date in standard YMDHMS form.
 495   -- IP blocks expire automatically.
 496   ipb_timestamp char(14) binary NOT NULL default '',
 497
 498   -- Indicates that the IP address was banned because a banned
 499   -- user accessed a page through it. If this is 1, ipb_address
 500   -- will be hidden, and the block identified by block ID number.
 501   ipb_auto tinyint(1) NOT NULL default '0',
 502
 503   -- Time at which the block will expire.
 504   ipb_expiry char(14) binary NOT NULL default '',
 505
 506   -- Start and end of an address range, in hexadecimal
 507   -- Size chosen to allow IPv6
 508   ipb_range_start varchar(32) NOT NULL default '',
 509   ipb_range_end varchar(32) NOT NULL default '',
 510
 511   PRIMARY KEY ipb_id (ipb_id),
 512   INDEX ipb_address (ipb_address),
 513   INDEX ipb_user (ipb_user),
 514   INDEX ipb_range (ipb_range_start(8), ipb_range_end(8))
 515
 516 ) TYPE=InnoDB;
 517
 518
 519 --
 520 -- Uploaded images and other files.
 521 --
 522 CREATE TABLE /*$wgDBprefix*/image (
 523   -- Filename.
 524   -- This is also the title of the associated description page,
 525   -- which will be in namespace 6 (NS_IMAGE).
 526   img_name varchar(255) binary NOT NULL default '',
 527
 528   -- File size in bytes.
 529   img_size int(8) unsigned NOT NULL default '0',
 530
 531   -- For images, size in pixels.
 532   img_width int(5)  NOT NULL default '0',
 533   img_height int(5)  NOT NULL default '0',
 534
 535   -- Extracted EXIF metadata stored as a serialized PHP array.
 536   img_metadata mediumblob NOT NULL,
 537
 538   -- For images, bits per pixel if known.
 539   img_bits int(3)  NOT NULL default '0',
 540
 541   -- Media type as defined by the MEDIATYPE_xxx constants
 542   img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 543
 544   -- major part of a MIME media type as defined by IANA
 545   -- see http://www.iana.org/assignments/media-types/
 546   img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart") NOT NULL default "unknown",
 547
 548   -- minor part of a MIME media type as defined by IANA
 549   -- the minor parts are not required to adher to any standard
 550   -- but should be consistent throughout the database
 551   -- see http://www.iana.org/assignments/media-types/
 552   img_minor_mime varchar(32) NOT NULL default "unknown",
 553
 554   -- Description field as entered by the uploader.
 555   -- This is displayed in image upload history and logs.
 556   img_description tinyblob NOT NULL default '',
 557
 558   -- user_id and user_name of uploader.
 559   img_user int(5) unsigned NOT NULL default '0',
 560   img_user_text varchar(255) binary NOT NULL default '',
 561
 562   -- Time of the upload.
 563   img_timestamp char(14) binary NOT NULL default '',
 564
 565   PRIMARY KEY img_name (img_name),
 566
 567   -- Used by Special:Imagelist for sort-by-size
 568   INDEX img_size (img_size),
 569
 570   -- Used by Special:Newimages and Special:Imagelist
 571   INDEX img_timestamp (img_timestamp)
 572
 573 ) TYPE=InnoDB;
 574
 575 --
 576 -- Previous revisions of uploaded files.
 577 -- Awkwardly, image rows have to be moved into
 578 -- this table at re-upload time.
 579 --
 580 CREATE TABLE /*$wgDBprefix*/oldimage (
 581   -- Base filename: key to image.img_name
 582   oi_name varchar(255) binary NOT NULL default '',
 583
 584   -- Filename of the archived file.
 585   -- This is generally a timestamp and '!' prepended to the base name.
 586   oi_archive_name varchar(255) binary NOT NULL default '',
 587
 588   -- Other fields as in image...
 589   oi_size int(8) unsigned NOT NULL default 0,
 590   oi_width int(5) NOT NULL default 0,
 591   oi_height int(5) NOT NULL default 0,
 592   oi_bits int(3) NOT NULL default 0,
 593   oi_description tinyblob NOT NULL default '',
 594   oi_user int(5) unsigned NOT NULL default '0',
 595   oi_user_text varchar(255) binary NOT NULL default '',
 596   oi_timestamp char(14) binary NOT NULL default '',
 597
 598   INDEX oi_name (oi_name(10))
 599
 600 ) TYPE=InnoDB;
 601
 602
 603 --
 604 -- Primarily a summary table for Special:Recentchanges,
 605 -- this table contains some additional info on edits from
 606 -- the last few days, see Article::editUpdates()
 607 --
 608 CREATE TABLE /*$wgDBprefix*/recentchanges (
 609   rc_id int(8) NOT NULL auto_increment,
 610   rc_timestamp varchar(14) binary NOT NULL default '',
 611   rc_cur_time varchar(14) binary NOT NULL default '',
 612
 613   -- As in revision
 614   rc_user int(10) unsigned NOT NULL default '0',
 615   rc_user_text varchar(255) binary NOT NULL default '',
 616
 617   -- When pages are renamed, their RC entries do _not_ change.
 618   rc_namespace int NOT NULL default '0',
 619   rc_title varchar(255) binary NOT NULL default '',
 620
 621   -- as in revision...
 622   rc_comment varchar(255) binary NOT NULL default '',
 623   rc_minor tinyint(3) unsigned NOT NULL default '0',
 624
 625   -- Edits by user accounts with the 'bot' rights key are
 626   -- marked with a 1 here, and will be hidden from the
 627   -- default view.
 628   rc_bot tinyint(3) unsigned NOT NULL default '0',
 629
 630   rc_new tinyint(3) unsigned NOT NULL default '0',
 631
 632   -- Key to page_id (was cur_id prior to 1.5).
 633   -- This will keep links working after moves while
 634   -- retaining the at-the-time name in the changes list.
 635   rc_cur_id int(10) unsigned NOT NULL default '0',
 636
 637   -- rev_id of the given revision
 638   rc_this_oldid int(10) unsigned NOT NULL default '0',
 639
 640   -- rev_id of the prior revision, for generating diff links.
 641   rc_last_oldid int(10) unsigned NOT NULL default '0',
 642
 643   -- These may no longer be used, with the new move log.
 644   rc_type tinyint(3) unsigned NOT NULL default '0',
 645   rc_moved_to_ns tinyint(3) unsigned NOT NULL default '0',
 646   rc_moved_to_title varchar(255) binary NOT NULL default '',
 647
 648   -- If the Recent Changes Patrol option is enabled,
 649   -- users may mark edits as having been reviewed to
 650   -- remove a warning flag on the RC list.
 651   -- A value of 1 indicates the page has been reviewed.
 652   rc_patrolled tinyint(3) unsigned NOT NULL default '0',
 653
 654   -- Recorded IP address the edit was made from, if the
 655   -- $wgPutIPinRC option is enabled.
 656   rc_ip char(15) NOT NULL default '',
 657
 658   PRIMARY KEY rc_id (rc_id),
 659   INDEX rc_timestamp (rc_timestamp),
 660   INDEX rc_namespace_title (rc_namespace, rc_title),
 661   INDEX rc_cur_id (rc_cur_id),
 662   INDEX new_name_timestamp(rc_new,rc_namespace,rc_timestamp),
 663   INDEX rc_ip (rc_ip)
 664
 665 ) TYPE=InnoDB;
 666
 667 CREATE TABLE /*$wgDBprefix*/watchlist (
 668   -- Key to user.user_id
 669   wl_user int(5) unsigned NOT NULL,
 670
 671   -- Key to page_namespace/page_title
 672   -- Note that users may watch pages which do not exist yet,
 673   -- or existed in the past but have been deleted.
 674   wl_namespace int NOT NULL default '0',
 675   wl_title varchar(255) binary NOT NULL default '',
 676
 677   -- Timestamp when user was last sent a notification e-mail;
 678   -- cleared when the user visits the page.
 679   wl_notificationtimestamp varchar(14) binary,
 680
 681   UNIQUE KEY (wl_user, wl_namespace, wl_title),
 682   KEY namespace_title (wl_namespace,wl_title)
 683
 684 ) TYPE=InnoDB;
 685
 686
 687 --
 688 -- Used by the math module to keep track
 689 -- of previously-rendered items.
 690 --
 691 CREATE TABLE /*$wgDBprefix*/math (
 692   -- Binary MD5 hash of the latex fragment, used as an identifier key.
 693   math_inputhash varchar(16) NOT NULL,
 694
 695   -- Not sure what this is, exactly...
 696   math_outputhash varchar(16) NOT NULL,
 697
 698   -- texvc reports how well it thinks the HTML conversion worked;
 699   -- if it's a low level the PNG rendering may be preferred.
 700   math_html_conservativeness tinyint(1) NOT NULL,
 701
 702   -- HTML output from texvc, if any
 703   math_html text,
 704
 705   -- MathML output from texvc, if any
 706   math_mathml text,
 707
 708   UNIQUE KEY math_inputhash (math_inputhash)
 709
 710 ) TYPE=InnoDB;
 711
 712 --
 713 -- When using the default MySQL search backend, page titles
 714 -- and text are munged to strip markup, do Unicode case folding,
 715 -- and prepare the result for MySQL's fulltext index.
 716 --
 717 -- This table must be MyISAM; InnoDB does not support the needed
 718 -- fulltext index.
 719 --
 720 CREATE TABLE /*$wgDBprefix*/searchindex (
 721   -- Key to page_id
 722   si_page int(8) unsigned NOT NULL,
 723
 724   -- Munged version of title
 725   si_title varchar(255) NOT NULL default '',
 726
 727   -- Munged version of body text
 728   si_text mediumtext NOT NULL default '',
 729
 730   UNIQUE KEY (si_page),
 731   FULLTEXT si_title (si_title),
 732   FULLTEXT si_text (si_text)
 733
 734 ) TYPE=MyISAM;
 735
 736 --
 737 -- Recognized interwiki link prefixes
 738 --
 739 CREATE TABLE /*$wgDBprefix*/interwiki (
 740   -- The interwiki prefix, (e.g. "Meatball", or the language prefix "de")
 741   iw_prefix char(32) NOT NULL,
 742
 743   -- The URL of the wiki, with "$1" as a placeholder for an article name.
 744   -- Any spaces in the name will be transformed to underscores before
 745   -- insertion.
 746   iw_url char(127) NOT NULL,
 747
 748   -- A boolean value indicating whether the wiki is in this project
 749   -- (used, for example, to detect redirect loops)
 750   iw_local BOOL NOT NULL,
 751
 752   -- Boolean value indicating whether interwiki transclusions are allowed.
 753   iw_trans TINYINT(1) NOT NULL DEFAULT 0,
 754
 755   UNIQUE KEY iw_prefix (iw_prefix)
 756
 757 ) TYPE=InnoDB;
 758
 759 --
 760 -- Used for caching expensive grouped queries
 761 --
 762 CREATE TABLE /*$wgDBprefix*/querycache (
 763   -- A key name, generally the base name of of the special page.
 764   qc_type char(32) NOT NULL,
 765
 766   -- Some sort of stored value. Sizes, counts...
 767   qc_value int(5) unsigned NOT NULL default '0',
 768
 769   -- Target namespace+title
 770   qc_namespace int NOT NULL default '0',
 771   qc_title char(255) binary NOT NULL default '',
 772
 773   KEY (qc_type,qc_value)
 774
 775 ) TYPE=InnoDB;
 776
 777 --
 778 -- For a few generic cache operations if not using Memcached
 779 --
 780 CREATE TABLE /*$wgDBprefix*/objectcache (
 781   keyname char(255) binary not null default '',
 782   value mediumblob,
 783   exptime datetime,
 784   unique key (keyname),
 785   key (exptime)
 786
 787 ) TYPE=InnoDB;
 788
 789 -- For article validation
 790 CREATE TABLE /*$wgDBprefix*/validate (
 791   val_user int(11) NOT NULL default '0',
 792   val_page int(11) unsigned NOT NULL default '0',
 793   val_revision int(11) unsigned NOT NULL default '0',
 794   val_type int(11) unsigned NOT NULL default '0',
 795   val_value int(11) default '0',
 796   val_comment varchar(255) NOT NULL default '',
 797   val_ip varchar(20) NOT NULL default '',
 798   KEY val_user (val_user,val_revision)
 799 ) TYPE=InnoDB;
 800
 801
 802 CREATE TABLE /*$wgDBprefix*/logging (
 803   -- Symbolic keys for the general log type and the action type
 804   -- within the log. The output format will be controlled by the
 805   -- action field, but only the type controls categorization.
 806   log_type char(10) NOT NULL default '',
 807   log_action char(10) NOT NULL default '',
 808
 809   -- Timestamp. Duh.
 810   log_timestamp char(14) NOT NULL default '19700101000000',
 811
 812   -- The user who performed this action; key to user_id
 813   log_user int unsigned NOT NULL default 0,
 814
 815   -- Key to the page affected. Where a user is the target,
 816   -- this will point to the user page.
 817   log_namespace int NOT NULL default 0,
 818   log_title varchar(255) binary NOT NULL default '',
 819
 820   -- Freeform text. Interpreted as edit history comments.
 821   log_comment varchar(255) NOT NULL default '',
 822
 823   -- LF separated list of miscellaneous parameters
 824   log_params blob NOT NULL default '',
 825
 826   KEY type_time (log_type, log_timestamp),
 827   KEY user_time (log_user, log_timestamp),
 828   KEY page_time (log_namespace, log_title, log_timestamp),
 829   KEY times (log_timestamp)
 830
 831 ) TYPE=InnoDB;
 832
 833 CREATE TABLE /*$wgDBprefix*/trackbacks (
 834         tb_id integer AUTO_INCREMENT PRIMARY KEY,
 835         tb_page integer REFERENCES page(page_id) ON DELETE CASCADE,
 836         tb_title varchar(255) NOT NULL,
 837         tb_url  varchar(255) NOT NULL,
 838         tb_ex text,
 839         tb_name varchar(255),
 840
 841         INDEX (tb_page)
 842 );