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   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  -- This is a shared schema file used for both MySQL and SQLite installs.
   6  
   7  --
   8  -- General notes:
   9  --
  10  -- If possible, create tables as InnoDB to benefit from the
  11  -- superior resiliency against crashes and ability to read
  12  -- during writes (and write during reads!)
  13  --
  14  -- Only the 'searchindex' table requires MyISAM due to the
  15  -- requirement for fulltext index support, which is missing
  16  -- from InnoDB.
  17  --
  18  --
  19  -- The MySQL table backend for MediaWiki currently uses
  20  -- 14-character BINARY or VARBINARY fields to store timestamps.
  21  -- The format is YYYYMMDDHHMMSS, which is derived from the
  22  -- text format of MySQL's TIMESTAMP fields.
  23  --
  24  -- Historically TIMESTAMP fields were used, but abandoned
  25  -- in early 2002 after a lot of trouble with the fields
  26  -- auto-updating.
  27  --
  28  -- The Postgres backend uses TIMESTAMPTZ fields for timestamps,
  29  -- and we will migrate the MySQL definitions at some point as
  30  -- well.
  31  --
  32  --
  33  -- The /*_*/ comments in this and other files are
  34  -- replaced with the defined table prefix by the installer
  35  -- and updater scripts. If you are installing or running
  36  -- updates manually, you will need to manually insert the
  37  -- table prefix if any when running these scripts.
  38  --
  39  
  40  
  41  --
  42  -- The user table contains basic account information,
  43  -- authentication keys, etc.
  44  --
  45  -- Some multi-wiki sites may share a single central user table
  46  -- between separate wikis using the $wgSharedDB setting.
  47  --
  48  -- Note that when a external authentication plugin is used,
  49  -- user table entries still need to be created to store
  50  -- preferences and to key tracking information in the other
  51  -- tables.
  52  --
  53  CREATE TABLE /*_*/user (
  54    user_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
  55  
  56    -- Usernames must be unique, must not be in the form of
  57    -- an IP address. _Shouldn't_ allow slashes or case
  58    -- conflicts. Spaces are allowed, and are _not_ converted
  59    -- to underscores like titles. See the User::newFromName() for
  60    -- the specific tests that usernames have to pass.
  61    user_name varchar(255) binary NOT NULL default '',
  62  
  63    -- Optional 'real name' to be displayed in credit listings
  64    user_real_name varchar(255) binary NOT NULL default '',
  65  
  66    -- Password hashes, see User::crypt() and User::comparePasswords()
  67    -- in User.php for the algorithm
  68    user_password tinyblob NOT NULL,
  69  
  70    -- When using 'mail me a new password', a random
  71    -- password is generated and the hash stored here.
  72    -- The previous password is left in place until
  73    -- someone actually logs in with the new password,
  74    -- at which point the hash is moved to user_password
  75    -- and the old password is invalidated.
  76    user_newpassword tinyblob NOT NULL,
  77  
  78    -- Timestamp of the last time when a new password was
  79    -- sent, for throttling and expiring purposes
  80    -- Emailed passwords will expire $wgNewPasswordExpiry
  81    -- (a week) after being set. If user_newpass_time is NULL
  82    -- (eg. created by mail) it doesn't expire.
  83    user_newpass_time binary(14),
  84  
  85    -- Note: email should be restricted, not public info.
  86    -- Same with passwords.
  87    user_email tinytext NOT NULL,
  88  
  89    -- If the browser sends an If-Modified-Since header, a 304 response is
  90    -- suppressed if the value in this field for the current user is later than
  91    -- the value in the IMS header. That is, this field is an invalidation timestamp
  92    -- for the browser cache of logged-in users. Among other things, it is used
  93    -- to prevent pages generated for a previously logged in user from being
  94    -- displayed after a session expiry followed by a fresh login.
  95    user_touched binary(14) NOT NULL default '',
  96  
  97    -- A pseudorandomly generated value that is stored in
  98    -- a cookie when the "remember password" feature is
  99    -- used (previously, a hash of the password was used, but
 100    -- this was vulnerable to cookie-stealing attacks)
 101    user_token binary(32) NOT NULL default '',
 102  
 103    -- Initially NULL; when a user's e-mail address has been
 104    -- validated by returning with a mailed token, this is
 105    -- set to the current timestamp.
 106    user_email_authenticated binary(14),
 107  
 108    -- Randomly generated token created when the e-mail address
 109    -- is set and a confirmation test mail sent.
 110    user_email_token binary(32),
 111  
 112    -- Expiration date for the user_email_token
 113    user_email_token_expires binary(14),
 114  
 115    -- Timestamp of account registration.
 116    -- Accounts predating this schema addition may contain NULL.
 117    user_registration binary(14),
 118  
 119    -- Count of edits and edit-like actions.
 120    --
 121    -- *NOT* intended to be an accurate copy of COUNT(*) WHERE rev_user=user_id
 122    -- May contain NULL for old accounts if batch-update scripts haven't been
 123    -- run, as well as listing deleted edits and other myriad ways it could be
 124    -- out of sync.
 125    --
 126    -- Meant primarily for heuristic checks to give an impression of whether
 127    -- the account has been used much.
 128    --
 129    user_editcount int,
 130  
 131    -- Expiration date for user password. Use $user->expirePassword()
 132    -- to force a password reset.
 133    user_password_expires varbinary(14) DEFAULT NULL
 134  
 135  ) /*$wgDBTableOptions*/;
 136  
 137  CREATE UNIQUE INDEX /*i*/user_name ON /*_*/user (user_name);
 138  CREATE INDEX /*i*/user_email_token ON /*_*/user (user_email_token);
 139  CREATE INDEX /*i*/user_email ON /*_*/user (user_email(50));
 140  
 141  
 142  --
 143  -- User permissions have been broken out to a separate table;
 144  -- this allows sites with a shared user table to have different
 145  -- permissions assigned to a user in each project.
 146  --
 147  -- This table replaces the old user_rights field which used a
 148  -- comma-separated blob.
 149  --
 150  CREATE TABLE /*_*/user_groups (
 151    -- Key to user_id
 152    ug_user int unsigned NOT NULL default 0,
 153  
 154    -- Group names are short symbolic string keys.
 155    -- The set of group names is open-ended, though in practice
 156    -- only some predefined ones are likely to be used.
 157    --
 158    -- At runtime $wgGroupPermissions will associate group keys
 159    -- with particular permissions. A user will have the combined
 160    -- permissions of any group they're explicitly in, plus
 161    -- the implicit '*' and 'user' groups.
 162    ug_group varbinary(255) NOT NULL default ''
 163  ) /*$wgDBTableOptions*/;
 164  
 165  CREATE UNIQUE INDEX /*i*/ug_user_group ON /*_*/user_groups (ug_user,ug_group);
 166  CREATE INDEX /*i*/ug_group ON /*_*/user_groups (ug_group);
 167  
 168  -- Stores the groups the user has once belonged to.
 169  -- The user may still belong to these groups (check user_groups).
 170  -- Users are not autopromoted to groups from which they were removed.
 171  CREATE TABLE /*_*/user_former_groups (
 172    -- Key to user_id
 173    ufg_user int unsigned NOT NULL default 0,
 174    ufg_group varbinary(255) NOT NULL default ''
 175  ) /*$wgDBTableOptions*/;
 176  
 177  CREATE UNIQUE INDEX /*i*/ufg_user_group ON /*_*/user_former_groups (ufg_user,ufg_group);
 178  
 179  --
 180  -- Stores notifications of user talk page changes, for the display
 181  -- of the "you have new messages" box
 182  --
 183  CREATE TABLE /*_*/user_newtalk (
 184    -- Key to user.user_id
 185    user_id int NOT NULL default 0,
 186    -- If the user is an anonymous user their IP address is stored here
 187    -- since the user_id of 0 is ambiguous
 188    user_ip varbinary(40) NOT NULL default '',
 189    -- The highest timestamp of revisions of the talk page viewed
 190    -- by this user
 191    user_last_timestamp varbinary(14) NULL default NULL
 192  ) /*$wgDBTableOptions*/;
 193  
 194  -- Indexes renamed for SQLite in 1.14
 195  CREATE INDEX /*i*/un_user_id ON /*_*/user_newtalk (user_id);
 196  CREATE INDEX /*i*/un_user_ip ON /*_*/user_newtalk (user_ip);
 197  
 198  
 199  --
 200  -- User preferences and perhaps other fun stuff. :)
 201  -- Replaces the old user.user_options blob, with a couple nice properties:
 202  --
 203  -- 1) We only store non-default settings, so changes to the defauls
 204  --    are now reflected for everybody, not just new accounts.
 205  -- 2) We can more easily do bulk lookups, statistics, or modifications of
 206  --    saved options since it's a sane table structure.
 207  --
 208  CREATE TABLE /*_*/user_properties (
 209    -- Foreign key to user.user_id
 210    up_user int NOT NULL,
 211  
 212    -- Name of the option being saved. This is indexed for bulk lookup.
 213    up_property varbinary(255) NOT NULL,
 214  
 215    -- Property value as a string.
 216    up_value blob
 217  ) /*$wgDBTableOptions*/;
 218  
 219  CREATE UNIQUE INDEX /*i*/user_properties_user_property ON /*_*/user_properties (up_user,up_property);
 220  CREATE INDEX /*i*/user_properties_property ON /*_*/user_properties (up_property);
 221  
 222  --
 223  -- Core of the wiki: each page has an entry here which identifies
 224  -- it by title and contains some essential metadata.
 225  --
 226  CREATE TABLE /*_*/page (
 227    -- Unique identifier number. The page_id will be preserved across
 228    -- edits and rename operations, but not deletions and recreations.
 229    page_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 230  
 231    -- A page name is broken into a namespace and a title.
 232    -- The namespace keys are UI-language-independent constants,
 233    -- defined in includes/Defines.php
 234    page_namespace int NOT NULL,
 235  
 236    -- The rest of the title, as text.
 237    -- Spaces are transformed into underscores in title storage.
 238    page_title varchar(255) binary NOT NULL,
 239  
 240    -- Comma-separated set of permission keys indicating who
 241    -- can move or edit the page.
 242    page_restrictions tinyblob NOT NULL,
 243  
 244    -- Number of times this page has been viewed.
 245    page_counter bigint unsigned NOT NULL default 0,
 246  
 247    -- 1 indicates the article is a redirect.
 248    page_is_redirect tinyint unsigned NOT NULL default 0,
 249  
 250    -- 1 indicates this is a new entry, with only one edit.
 251    -- Not all pages with one edit are new pages.
 252    page_is_new tinyint unsigned NOT NULL default 0,
 253  
 254    -- Random value between 0 and 1, used for Special:Randompage
 255    page_random real unsigned NOT NULL,
 256  
 257    -- This timestamp is updated whenever the page changes in
 258    -- a way requiring it to be re-rendered, invalidating caches.
 259    -- Aside from editing this includes permission changes,
 260    -- creation or deletion of linked pages, and alteration
 261    -- of contained templates.
 262    page_touched binary(14) NOT NULL default '',
 263  
 264    -- This timestamp is updated whenever a page is re-parsed and
 265    -- it has all the link tracking tables updated for it. This is
 266    -- useful for de-duplicating expensive backlink update jobs.
 267    page_links_updated varbinary(14) NULL default NULL,
 268  
 269    -- Handy key to revision.rev_id of the current revision.
 270    -- This may be 0 during page creation, but that shouldn't
 271    -- happen outside of a transaction... hopefully.
 272    page_latest int unsigned NOT NULL,
 273  
 274    -- Uncompressed length in bytes of the page's current source text.
 275    page_len int unsigned NOT NULL,
 276  
 277    -- content model, see CONTENT_MODEL_XXX constants
 278    page_content_model varbinary(32) DEFAULT NULL,
 279  
 280    -- Page content language
 281    page_lang varbinary(35) DEFAULT NULL
 282  ) /*$wgDBTableOptions*/;
 283  
 284  CREATE UNIQUE INDEX /*i*/name_title ON /*_*/page (page_namespace,page_title);
 285  CREATE INDEX /*i*/page_random ON /*_*/page (page_random);
 286  CREATE INDEX /*i*/page_len ON /*_*/page (page_len);
 287  CREATE INDEX /*i*/page_redirect_namespace_len ON /*_*/page (page_is_redirect, page_namespace, page_len);
 288  
 289  --
 290  -- Every edit of a page creates also a revision row.
 291  -- This stores metadata about the revision, and a reference
 292  -- to the text storage backend.
 293  --
 294  CREATE TABLE /*_*/revision (
 295    -- Unique ID to identify each revision
 296    rev_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 297  
 298    -- Key to page_id. This should _never_ be invalid.
 299    rev_page int unsigned NOT NULL,
 300  
 301    -- Key to text.old_id, where the actual bulk text is stored.
 302    -- It's possible for multiple revisions to use the same text,
 303    -- for instance revisions where only metadata is altered
 304    -- or a rollback to a previous version.
 305    rev_text_id int unsigned NOT NULL,
 306  
 307    -- Text comment summarizing the change.
 308    -- This text is shown in the history and other changes lists,
 309    -- rendered in a subset of wiki markup by Linker::formatComment()
 310    rev_comment tinyblob NOT NULL,
 311  
 312    -- Key to user.user_id of the user who made this edit.
 313    -- Stores 0 for anonymous edits and for some mass imports.
 314    rev_user int unsigned NOT NULL default 0,
 315  
 316    -- Text username or IP address of the editor.
 317    rev_user_text varchar(255) binary NOT NULL default '',
 318  
 319    -- Timestamp of when revision was created
 320    rev_timestamp binary(14) NOT NULL default '',
 321  
 322    -- Records whether the user marked the 'minor edit' checkbox.
 323    -- Many automated edits are marked as minor.
 324    rev_minor_edit tinyint unsigned NOT NULL default 0,
 325  
 326    -- Restrictions on who can access this revision
 327    rev_deleted tinyint unsigned NOT NULL default 0,
 328  
 329    -- Length of this revision in bytes
 330    rev_len int unsigned,
 331  
 332    -- Key to revision.rev_id
 333    -- This field is used to add support for a tree structure (The Adjacency List Model)
 334    rev_parent_id int unsigned default NULL,
 335  
 336    -- SHA-1 text content hash in base-36
 337    rev_sha1 varbinary(32) NOT NULL default '',
 338  
 339    -- content model, see CONTENT_MODEL_XXX constants
 340    rev_content_model varbinary(32) DEFAULT NULL,
 341  
 342    -- content format, see CONTENT_FORMAT_XXX constants
 343    rev_content_format varbinary(64) DEFAULT NULL
 344  
 345  ) /*$wgDBTableOptions*/ MAX_ROWS=10000000 AVG_ROW_LENGTH=1024;
 346  -- In case tables are created as MyISAM, use row hints for MySQL <5.0 to avoid 4GB limit
 347  
 348  CREATE UNIQUE INDEX /*i*/rev_page_id ON /*_*/revision (rev_page, rev_id);
 349  CREATE INDEX /*i*/rev_timestamp ON /*_*/revision (rev_timestamp);
 350  CREATE INDEX /*i*/page_timestamp ON /*_*/revision (rev_page,rev_timestamp);
 351  CREATE INDEX /*i*/user_timestamp ON /*_*/revision (rev_user,rev_timestamp);
 352  CREATE INDEX /*i*/usertext_timestamp ON /*_*/revision (rev_user_text,rev_timestamp);
 353  CREATE INDEX /*i*/page_user_timestamp ON /*_*/revision (rev_page,rev_user,rev_timestamp);
 354  
 355  --
 356  -- Holds text of individual page revisions.
 357  --
 358  -- Field names are a holdover from the 'old' revisions table in
 359  -- MediaWiki 1.4 and earlier: an upgrade will transform that
 360  -- table into the 'text' table to minimize unnecessary churning
 361  -- and downtime. If upgrading, the other fields will be left unused.
 362  --
 363  CREATE TABLE /*_*/text (
 364    -- Unique text storage key number.
 365    -- Note that the 'oldid' parameter used in URLs does *not*
 366    -- refer to this number anymore, but to rev_id.
 367    --
 368    -- revision.rev_text_id is a key to this column
 369    old_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 370  
 371    -- Depending on the contents of the old_flags field, the text
 372    -- may be convenient plain text, or it may be funkily encoded.
 373    old_text mediumblob NOT NULL,
 374  
 375    -- Comma-separated list of flags:
 376    -- gzip: text is compressed with PHP's gzdeflate() function.
 377    -- utf8: text was stored as UTF-8.
 378    --       If $wgLegacyEncoding option is on, rows *without* this flag
 379    --       will be converted to UTF-8 transparently at load time.
 380    -- object: text field contained a serialized PHP object.
 381    --         The object either contains multiple versions compressed
 382    --         together to achieve a better compression ratio, or it refers
 383    --         to another row where the text can be found.
 384    old_flags tinyblob NOT NULL
 385  ) /*$wgDBTableOptions*/ MAX_ROWS=10000000 AVG_ROW_LENGTH=10240;
 386  -- In case tables are created as MyISAM, use row hints for MySQL <5.0 to avoid 4GB limit
 387  
 388  
 389  --
 390  -- Holding area for deleted articles, which may be viewed
 391  -- or restored by admins through the Special:Undelete interface.
 392  -- The fields generally correspond to the page, revision, and text
 393  -- fields, with several caveats.
 394  --
 395  CREATE TABLE /*_*/archive (
 396    -- Primary key
 397    ar_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 398    ar_namespace int NOT NULL default 0,
 399    ar_title varchar(255) binary NOT NULL default '',
 400  
 401    -- Newly deleted pages will not store text in this table,
 402    -- but will reference the separately existing text rows.
 403    -- This field is retained for backwards compatibility,
 404    -- so old archived pages will remain accessible after
 405    -- upgrading from 1.4 to 1.5.
 406    -- Text may be gzipped or otherwise funky.
 407    ar_text mediumblob NOT NULL,
 408  
 409    -- Basic revision stuff...
 410    ar_comment tinyblob NOT NULL,
 411    ar_user int unsigned NOT NULL default 0,
 412    ar_user_text varchar(255) binary NOT NULL,
 413    ar_timestamp binary(14) NOT NULL default '',
 414    ar_minor_edit tinyint NOT NULL default 0,
 415  
 416    -- See ar_text note.
 417    ar_flags tinyblob NOT NULL,
 418  
 419    -- When revisions are deleted, their unique rev_id is stored
 420    -- here so it can be retained after undeletion. This is necessary
 421    -- to retain permalinks to given revisions after accidental delete
 422    -- cycles or messy operations like history merges.
 423    --
 424    -- Old entries from 1.4 will be NULL here, and a new rev_id will
 425    -- be created on undeletion for those revisions.
 426    ar_rev_id int unsigned,
 427  
 428    -- For newly deleted revisions, this is the text.old_id key to the
 429    -- actual stored text. To avoid breaking the block-compression scheme
 430    -- and otherwise making storage changes harder, the actual text is
 431    -- *not* deleted from the text table, merely hidden by removal of the
 432    -- page and revision entries.
 433    --
 434    -- Old entries deleted under 1.2-1.4 will have NULL here, and their
 435    -- ar_text and ar_flags fields will be used to create a new text
 436    -- row upon undeletion.
 437    ar_text_id int unsigned,
 438  
 439    -- rev_deleted for archives
 440    ar_deleted tinyint unsigned NOT NULL default 0,
 441  
 442    -- Length of this revision in bytes
 443    ar_len int unsigned,
 444  
 445    -- Reference to page_id. Useful for sysadmin fixing of large pages
 446    -- merged together in the archives, or for cleanly restoring a page
 447    -- at its original ID number if possible.
 448    --
 449    -- Will be NULL for pages deleted prior to 1.11.
 450    ar_page_id int unsigned,
 451  
 452    -- Original previous revision
 453    ar_parent_id int unsigned default NULL,
 454  
 455    -- SHA-1 text content hash in base-36
 456    ar_sha1 varbinary(32) NOT NULL default '',
 457  
 458    -- content model, see CONTENT_MODEL_XXX constants
 459    ar_content_model varbinary(32) DEFAULT NULL,
 460  
 461    -- content format, see CONTENT_FORMAT_XXX constants
 462    ar_content_format varbinary(64) DEFAULT NULL
 463  ) /*$wgDBTableOptions*/;
 464  
 465  CREATE INDEX /*i*/name_title_timestamp ON /*_*/archive (ar_namespace,ar_title,ar_timestamp);
 466  CREATE INDEX /*i*/ar_usertext_timestamp ON /*_*/archive (ar_user_text,ar_timestamp);
 467  CREATE INDEX /*i*/ar_revid ON /*_*/archive (ar_rev_id);
 468  
 469  
 470  --
 471  -- Track page-to-page hyperlinks within the wiki.
 472  --
 473  CREATE TABLE /*_*/pagelinks (
 474    -- Key to the page_id of the page containing the link.
 475    pl_from int unsigned NOT NULL default 0,
 476    -- Namespace for this page
 477    pl_from_namespace int NOT NULL default 0,
 478  
 479    -- Key to page_namespace/page_title of the target page.
 480    -- The target page may or may not exist, and due to renames
 481    -- and deletions may refer to different page records as time
 482    -- goes by.
 483    pl_namespace int NOT NULL default 0,
 484    pl_title varchar(255) binary NOT NULL default ''
 485  ) /*$wgDBTableOptions*/;
 486  
 487  CREATE UNIQUE INDEX /*i*/pl_from ON /*_*/pagelinks (pl_from,pl_namespace,pl_title);
 488  CREATE INDEX /*i*/pl_namespace ON /*_*/pagelinks (pl_namespace,pl_title,pl_from);
 489  CREATE INDEX /*i*/pl_backlinks_namespace ON /*_*/pagelinks (pl_namespace,pl_title,pl_from_namespace,pl_from);
 490  
 491  
 492  --
 493  -- Track template inclusions.
 494  --
 495  CREATE TABLE /*_*/templatelinks (
 496    -- Key to the page_id of the page containing the link.
 497    tl_from int unsigned NOT NULL default 0,
 498    -- Namespace for this page
 499    tl_from_namespace int NOT NULL default 0,
 500  
 501    -- Key to page_namespace/page_title of the target page.
 502    -- The target page may or may not exist, and due to renames
 503    -- and deletions may refer to different page records as time
 504    -- goes by.
 505    tl_namespace int NOT NULL default 0,
 506    tl_title varchar(255) binary NOT NULL default ''
 507  ) /*$wgDBTableOptions*/;
 508  
 509  CREATE UNIQUE INDEX /*i*/tl_from ON /*_*/templatelinks (tl_from,tl_namespace,tl_title);
 510  CREATE INDEX /*i*/tl_namespace ON /*_*/templatelinks (tl_namespace,tl_title,tl_from);
 511  CREATE INDEX /*i*/tl_backlinks_namespace ON /*_*/templatelinks (tl_namespace,tl_title,tl_from_namespace,tl_from);
 512  
 513  
 514  --
 515  -- Track links to images *used inline*
 516  -- We don't distinguish live from broken links here, so
 517  -- they do not need to be changed on upload/removal.
 518  --
 519  CREATE TABLE /*_*/imagelinks (
 520    -- Key to page_id of the page containing the image / media link.
 521    il_from int unsigned NOT NULL default 0,
 522    -- Namespace for this page
 523    il_from_namespace int NOT NULL default 0,
 524  
 525    -- Filename of target image.
 526    -- This is also the page_title of the file's description page;
 527    -- all such pages are in namespace 6 (NS_FILE).
 528    il_to varchar(255) binary NOT NULL default ''
 529  ) /*$wgDBTableOptions*/;
 530  
 531  CREATE UNIQUE INDEX /*i*/il_from ON /*_*/imagelinks (il_from,il_to);
 532  CREATE INDEX /*i*/il_to ON /*_*/imagelinks (il_to,il_from);
 533  CREATE INDEX /*i*/il_backlinks_namespace ON /*_*/imagelinks (il_to,il_from_namespace,il_from);
 534  
 535  
 536  --
 537  -- Track category inclusions *used inline*
 538  -- This tracks a single level of category membership
 539  --
 540  CREATE TABLE /*_*/categorylinks (
 541    -- Key to page_id of the page defined as a category member.
 542    cl_from int unsigned NOT NULL default 0,
 543  
 544    -- Name of the category.
 545    -- This is also the page_title of the category's description page;
 546    -- all such pages are in namespace 14 (NS_CATEGORY).
 547    cl_to varchar(255) binary NOT NULL default '',
 548  
 549    -- A binary string obtained by applying a sortkey generation algorithm
 550    -- (Collation::getSortKey()) to page_title, or cl_sortkey_prefix . "\n"
 551    -- . page_title if cl_sortkey_prefix is nonempty.
 552    cl_sortkey varbinary(230) NOT NULL default '',
 553  
 554    -- A prefix for the raw sortkey manually specified by the user, either via
 555    -- [[Category:Foo|prefix]] or {{defaultsort:prefix}}.  If nonempty, it's
 556    -- concatenated with a line break followed by the page title before the sortkey
 557    -- conversion algorithm is run.  We store this so that we can update
 558    -- collations without reparsing all pages.
 559    -- Note: If you change the length of this field, you also need to change
 560    -- code in LinksUpdate.php. See bug 25254.
 561    cl_sortkey_prefix varchar(255) binary NOT NULL default '',
 562  
 563    -- This isn't really used at present. Provided for an optional
 564    -- sorting method by approximate addition time.
 565    cl_timestamp timestamp NOT NULL,
 566  
 567    -- Stores $wgCategoryCollation at the time cl_sortkey was generated.  This
 568    -- can be used to install new collation versions, tracking which rows are not
 569    -- yet updated.  '' means no collation, this is a legacy row that needs to be
 570    -- updated by updateCollation.php.  In the future, it might be possible to
 571    -- specify different collations per category.
 572    cl_collation varbinary(32) NOT NULL default '',
 573  
 574    -- Stores whether cl_from is a category, file, or other page, so we can
 575    -- paginate the three categories separately.  This never has to be updated
 576    -- after the page is created, since none of these page types can be moved to
 577    -- any other.
 578    cl_type ENUM('page', 'subcat', 'file') NOT NULL default 'page'
 579  ) /*$wgDBTableOptions*/;
 580  
 581  CREATE UNIQUE INDEX /*i*/cl_from ON /*_*/categorylinks (cl_from,cl_to);
 582  
 583  -- We always sort within a given category, and within a given type.  FIXME:
 584  -- Formerly this index didn't cover cl_type (since that didn't exist), so old
 585  -- callers won't be using an index: fix this?
 586  CREATE INDEX /*i*/cl_sortkey ON /*_*/categorylinks (cl_to,cl_type,cl_sortkey,cl_from);
 587  
 588  -- Used by the API (and some extensions)
 589  CREATE INDEX /*i*/cl_timestamp ON /*_*/categorylinks (cl_to,cl_timestamp);
 590  
 591  -- FIXME: Not used, delete this
 592  CREATE INDEX /*i*/cl_collation ON /*_*/categorylinks (cl_collation);
 593  
 594  --
 595  -- Track all existing categories.  Something is a category if 1) it has an en-
 596  -- try somewhere in categorylinks, or 2) it once did.  Categories might not
 597  -- have corresponding pages, so they need to be tracked separately.
 598  --
 599  CREATE TABLE /*_*/category (
 600    -- Primary key
 601    cat_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 602  
 603    -- Name of the category, in the same form as page_title (with underscores).
 604    -- If there is a category page corresponding to this category, by definition,
 605    -- it has this name (in the Category namespace).
 606    cat_title varchar(255) binary NOT NULL,
 607  
 608    -- The numbers of member pages (including categories and media), subcatego-
 609    -- ries, and Image: namespace members, respectively.  These are signed to
 610    -- make underflow more obvious.  We make the first number include the second
 611    -- two for better sorting: subtracting for display is easy, adding for order-
 612    -- ing is not.
 613    cat_pages int signed NOT NULL default 0,
 614    cat_subcats int signed NOT NULL default 0,
 615    cat_files int signed NOT NULL default 0
 616  ) /*$wgDBTableOptions*/;
 617  
 618  CREATE UNIQUE INDEX /*i*/cat_title ON /*_*/category (cat_title);
 619  
 620  -- For Special:Mostlinkedcategories
 621  CREATE INDEX /*i*/cat_pages ON /*_*/category (cat_pages);
 622  
 623  
 624  --
 625  -- Track links to external URLs
 626  --
 627  CREATE TABLE /*_*/externallinks (
 628    -- Primary key
 629    el_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 630  
 631    -- page_id of the referring page
 632    el_from int unsigned NOT NULL default 0,
 633  
 634    -- The URL
 635    el_to blob NOT NULL,
 636  
 637    -- In the case of HTTP URLs, this is the URL with any username or password
 638    -- removed, and with the labels in the hostname reversed and converted to
 639    -- lower case. An extra dot is added to allow for matching of either
 640    -- example.com or *.example.com in a single scan.
 641    -- Example:
 642    --      http://user:[email protected]/page.html
 643    --   becomes
 644    --      http://com.example.sub./page.html
 645    -- which allows for fast searching for all pages under example.com with the
 646    -- clause:
 647    --      WHERE el_index LIKE 'http://com.example.%'
 648    el_index blob NOT NULL
 649  ) /*$wgDBTableOptions*/;
 650  
 651  CREATE INDEX /*i*/el_from ON /*_*/externallinks (el_from, el_to(40));
 652  CREATE INDEX /*i*/el_to ON /*_*/externallinks (el_to(60), el_from);
 653  CREATE INDEX /*i*/el_index ON /*_*/externallinks (el_index(60));
 654  
 655  --
 656  -- Track interlanguage links
 657  --
 658  CREATE TABLE /*_*/langlinks (
 659    -- page_id of the referring page
 660    ll_from int unsigned NOT NULL default 0,
 661  
 662    -- Language code of the target
 663    ll_lang varbinary(20) NOT NULL default '',
 664  
 665    -- Title of the target, including namespace
 666    ll_title varchar(255) binary NOT NULL default ''
 667  ) /*$wgDBTableOptions*/;
 668  
 669  CREATE UNIQUE INDEX /*i*/ll_from ON /*_*/langlinks (ll_from, ll_lang);
 670  CREATE INDEX /*i*/ll_lang ON /*_*/langlinks (ll_lang, ll_title);
 671  
 672  
 673  --
 674  -- Track inline interwiki links
 675  --
 676  CREATE TABLE /*_*/iwlinks (
 677    -- page_id of the referring page
 678    iwl_from int unsigned NOT NULL default 0,
 679  
 680    -- Interwiki prefix code of the target
 681    iwl_prefix varbinary(20) NOT NULL default '',
 682  
 683    -- Title of the target, including namespace
 684    iwl_title varchar(255) binary NOT NULL default ''
 685  ) /*$wgDBTableOptions*/;
 686  
 687  CREATE UNIQUE INDEX /*i*/iwl_from ON /*_*/iwlinks (iwl_from, iwl_prefix, iwl_title);
 688  CREATE INDEX /*i*/iwl_prefix_title_from ON /*_*/iwlinks (iwl_prefix, iwl_title, iwl_from);
 689  CREATE INDEX /*i*/iwl_prefix_from_title ON /*_*/iwlinks (iwl_prefix, iwl_from, iwl_title);
 690  
 691  
 692  --
 693  -- Contains a single row with some aggregate info
 694  -- on the state of the site.
 695  --
 696  CREATE TABLE /*_*/site_stats (
 697    -- The single row should contain 1 here.
 698    ss_row_id int unsigned NOT NULL,
 699  
 700    -- Total number of page views, if hit counters are enabled.
 701    ss_total_views bigint unsigned default 0,
 702  
 703    -- Total number of edits performed.
 704    ss_total_edits bigint unsigned default 0,
 705  
 706    -- An approximate count of pages matching the following criteria:
 707    -- * in namespace 0
 708    -- * not a redirect
 709    -- * contains the text '[['
 710    -- See Article::isCountable() in includes/Article.php
 711    ss_good_articles bigint unsigned default 0,
 712  
 713    -- Total pages, theoretically equal to SELECT COUNT(*) FROM page; except faster
 714    ss_total_pages bigint default '-1',
 715  
 716    -- Number of users, theoretically equal to SELECT COUNT(*) FROM user;
 717    ss_users bigint default '-1',
 718  
 719    -- Number of users that still edit
 720    ss_active_users bigint default '-1',
 721  
 722    -- Number of images, equivalent to SELECT COUNT(*) FROM image
 723    ss_images int default 0
 724  ) /*$wgDBTableOptions*/;
 725  
 726  -- Pointless index to assuage developer superstitions
 727  CREATE UNIQUE INDEX /*i*/ss_row_id ON /*_*/site_stats (ss_row_id);
 728  
 729  
 730  --
 731  -- Stores an ID for every time any article is visited;
 732  -- depending on $wgHitcounterUpdateFreq, it is
 733  -- periodically cleared and the page_counter column
 734  -- in the page table updated for all the articles
 735  -- that have been visited.)
 736  --
 737  CREATE TABLE /*_*/hitcounter (
 738    hc_id int unsigned NOT NULL
 739  ) ENGINE=MEMORY MAX_ROWS=25000;
 740  
 741  
 742  --
 743  -- The internet is full of jerks, alas. Sometimes it's handy
 744  -- to block a vandal or troll account.
 745  --
 746  CREATE TABLE /*_*/ipblocks (
 747    -- Primary key, introduced for privacy.
 748    ipb_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,
 749  
 750    -- Blocked IP address in dotted-quad form or user name.
 751    ipb_address tinyblob NOT NULL,
 752  
 753    -- Blocked user ID or 0 for IP blocks.
 754    ipb_user int unsigned NOT NULL default 0,
 755  
 756    -- User ID who made the block.
 757    ipb_by int unsigned NOT NULL default 0,
 758  
 759    -- User name of blocker
 760    ipb_by_text varchar(255) binary NOT NULL default '',
 761  
 762    -- Text comment made by blocker.
 763    ipb_reason tinyblob NOT NULL,
 764  
 765    -- Creation (or refresh) date in standard YMDHMS form.
 766    -- IP blocks expire automatically.
 767    ipb_timestamp binary(14) NOT NULL default '',
 768  
 769    -- Indicates that the IP address was banned because a banned
 770    -- user accessed a page through it. If this is 1, ipb_address
 771    -- will be hidden, and the block identified by block ID number.
 772    ipb_auto bool NOT NULL default 0,
 773  
 774    -- If set to 1, block applies only to logged-out users
 775    ipb_anon_only bool NOT NULL default 0,
 776  
 777    -- Block prevents account creation from matching IP addresses
 778    ipb_create_account bool NOT NULL default 1,
 779  
 780    -- Block triggers autoblocks
 781    ipb_enable_autoblock bool NOT NULL default '1',
 782  
 783    -- Time at which the block will expire.
 784    -- May be "infinity"
 785    ipb_expiry varbinary(14) NOT NULL default '',
 786  
 787    -- Start and end of an address range, in hexadecimal
 788    -- Size chosen to allow IPv6
 789    -- FIXME: these fields were originally blank for single-IP blocks,
 790    -- but now they are populated. No migration was ever done. They
 791    -- should be fixed to be blank again for such blocks (bug 49504).
 792    ipb_range_start tinyblob NOT NULL,
 793    ipb_range_end tinyblob NOT NULL,
 794  
 795    -- Flag for entries hidden from users and Sysops
 796    ipb_deleted bool NOT NULL default 0,
 797  
 798    -- Block prevents user from accessing Special:Emailuser
 799    ipb_block_email bool NOT NULL default 0,
 800  
 801    -- Block allows user to edit their own talk page
 802    ipb_allow_usertalk bool NOT NULL default 0,
 803  
 804    -- ID of the block that caused this block to exist
 805    -- Autoblocks set this to the original block
 806    -- so that the original block being deleted also
 807    -- deletes the autoblocks
 808    ipb_parent_block_id int default NULL
 809  
 810  ) /*$wgDBTableOptions*/;
 811  
 812  -- Unique index to support "user already blocked" messages
 813  -- Any new options which prevent collisions should be included
 814  CREATE UNIQUE INDEX /*i*/ipb_address ON /*_*/ipblocks (ipb_address(255), ipb_user, ipb_auto, ipb_anon_only);
 815  
 816  CREATE INDEX /*i*/ipb_user ON /*_*/ipblocks (ipb_user);
 817  CREATE INDEX /*i*/ipb_range ON /*_*/ipblocks (ipb_range_start(8), ipb_range_end(8));
 818  CREATE INDEX /*i*/ipb_timestamp ON /*_*/ipblocks (ipb_timestamp);
 819  CREATE INDEX /*i*/ipb_expiry ON /*_*/ipblocks (ipb_expiry);
 820  CREATE INDEX /*i*/ipb_parent_block_id ON /*_*/ipblocks (ipb_parent_block_id);
 821  
 822  
 823  --
 824  -- Uploaded images and other files.
 825  --
 826  CREATE TABLE /*_*/image (
 827    -- Filename.
 828    -- This is also the title of the associated description page,
 829    -- which will be in namespace 6 (NS_FILE).
 830    img_name varchar(255) binary NOT NULL default '' PRIMARY KEY,
 831  
 832    -- File size in bytes.
 833    img_size int unsigned NOT NULL default 0,
 834  
 835    -- For images, size in pixels.
 836    img_width int NOT NULL default 0,
 837    img_height int NOT NULL default 0,
 838  
 839    -- Extracted Exif metadata stored as a serialized PHP array.
 840    img_metadata mediumblob NOT NULL,
 841  
 842    -- For images, bits per pixel if known.
 843    img_bits int NOT NULL default 0,
 844  
 845    -- Media type as defined by the MEDIATYPE_xxx constants
 846    img_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 847  
 848    -- major part of a MIME media type as defined by IANA
 849    -- see http://www.iana.org/assignments/media-types/
 850    -- for "chemical" cf. http://dx.doi.org/10.1021/ci9803233 by the ACS
 851    img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") NOT NULL default "unknown",
 852  
 853    -- minor part of a MIME media type as defined by IANA
 854    -- the minor parts are not required to adher to any standard
 855    -- but should be consistent throughout the database
 856    -- see http://www.iana.org/assignments/media-types/
 857    img_minor_mime varbinary(100) NOT NULL default "unknown",
 858  
 859    -- Description field as entered by the uploader.
 860    -- This is displayed in image upload history and logs.
 861    img_description tinyblob NOT NULL,
 862  
 863    -- user_id and user_name of uploader.
 864    img_user int unsigned NOT NULL default 0,
 865    img_user_text varchar(255) binary NOT NULL,
 866  
 867    -- Time of the upload.
 868    img_timestamp varbinary(14) NOT NULL default '',
 869  
 870    -- SHA-1 content hash in base-36
 871    img_sha1 varbinary(32) NOT NULL default ''
 872  ) /*$wgDBTableOptions*/;
 873  
 874  CREATE INDEX /*i*/img_usertext_timestamp ON /*_*/image (img_user_text,img_timestamp);
 875  -- Used by Special:ListFiles for sort-by-size
 876  CREATE INDEX /*i*/img_size ON /*_*/image (img_size);
 877  -- Used by Special:Newimages and Special:ListFiles
 878  CREATE INDEX /*i*/img_timestamp ON /*_*/image (img_timestamp);
 879  -- Used in API and duplicate search
 880  CREATE INDEX /*i*/img_sha1 ON /*_*/image (img_sha1(10));
 881  -- Used to get media of one type
 882  CREATE INDEX /*i*/img_media_mime ON /*_*/image (img_media_type,img_major_mime,img_minor_mime);
 883  
 884  
 885  --
 886  -- Previous revisions of uploaded files.
 887  -- Awkwardly, image rows have to be moved into
 888  -- this table at re-upload time.
 889  --
 890  CREATE TABLE /*_*/oldimage (
 891    -- Base filename: key to image.img_name
 892    oi_name varchar(255) binary NOT NULL default '',
 893  
 894    -- Filename of the archived file.
 895    -- This is generally a timestamp and '!' prepended to the base name.
 896    oi_archive_name varchar(255) binary NOT NULL default '',
 897  
 898    -- Other fields as in image...
 899    oi_size int unsigned NOT NULL default 0,
 900    oi_width int NOT NULL default 0,
 901    oi_height int NOT NULL default 0,
 902    oi_bits int NOT NULL default 0,
 903    oi_description tinyblob NOT NULL,
 904    oi_user int unsigned NOT NULL default 0,
 905    oi_user_text varchar(255) binary NOT NULL,
 906    oi_timestamp binary(14) NOT NULL default '',
 907  
 908    oi_metadata mediumblob NOT NULL,
 909    oi_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 910    oi_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") NOT NULL default "unknown",
 911    oi_minor_mime varbinary(100) NOT NULL default "unknown",
 912    oi_deleted tinyint unsigned NOT NULL default 0,
 913    oi_sha1 varbinary(32) NOT NULL default ''
 914  ) /*$wgDBTableOptions*/;
 915  
 916  CREATE INDEX /*i*/oi_usertext_timestamp ON /*_*/oldimage (oi_user_text,oi_timestamp);
 917  CREATE INDEX /*i*/oi_name_timestamp ON /*_*/oldimage (oi_name,oi_timestamp);
 918  -- oi_archive_name truncated to 14 to avoid key length overflow
 919  CREATE INDEX /*i*/oi_name_archive_name ON /*_*/oldimage (oi_name,oi_archive_name(14));
 920  CREATE INDEX /*i*/oi_sha1 ON /*_*/oldimage (oi_sha1(10));
 921  
 922  
 923  --
 924  -- Record of deleted file data
 925  --
 926  CREATE TABLE /*_*/filearchive (
 927    -- Unique row id
 928    fa_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,
 929  
 930    -- Original base filename; key to image.img_name, page.page_title, etc
 931    fa_name varchar(255) binary NOT NULL default '',
 932  
 933    -- Filename of archived file, if an old revision
 934    fa_archive_name varchar(255) binary default '',
 935  
 936    -- Which storage bin (directory tree or object store) the file data
 937    -- is stored in. Should be 'deleted' for files that have been deleted;
 938    -- any other bin is not yet in use.
 939    fa_storage_group varbinary(16),
 940  
 941    -- SHA-1 of the file contents plus extension, used as a key for storage.
 942    -- eg 8f8a562add37052a1848ff7771a2c515db94baa9.jpg
 943    --
 944    -- If NULL, the file was missing at deletion time or has been purged
 945    -- from the archival storage.
 946    fa_storage_key varbinary(64) default '',
 947  
 948    -- Deletion information, if this file is deleted.
 949    fa_deleted_user int,
 950    fa_deleted_timestamp binary(14) default '',
 951    fa_deleted_reason text,
 952  
 953    -- Duped fields from image
 954    fa_size int unsigned default 0,
 955    fa_width int default 0,
 956    fa_height int default 0,
 957    fa_metadata mediumblob,
 958    fa_bits int default 0,
 959    fa_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
 960    fa_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") default "unknown",
 961    fa_minor_mime varbinary(100) default "unknown",
 962    fa_description tinyblob,
 963    fa_user int unsigned default 0,
 964    fa_user_text varchar(255) binary,
 965    fa_timestamp binary(14) default '',
 966  
 967    -- Visibility of deleted revisions, bitfield
 968    fa_deleted tinyint unsigned NOT NULL default 0,
 969  
 970    -- sha1 hash of file content
 971    fa_sha1 varbinary(32) NOT NULL default ''
 972  ) /*$wgDBTableOptions*/;
 973  
 974  -- pick out by image name
 975  CREATE INDEX /*i*/fa_name ON /*_*/filearchive (fa_name, fa_timestamp);
 976  -- pick out dupe files
 977  CREATE INDEX /*i*/fa_storage_group ON /*_*/filearchive (fa_storage_group, fa_storage_key);
 978  -- sort by deletion time
 979  CREATE INDEX /*i*/fa_deleted_timestamp ON /*_*/filearchive (fa_deleted_timestamp);
 980  -- sort by uploader
 981  CREATE INDEX /*i*/fa_user_timestamp ON /*_*/filearchive (fa_user_text,fa_timestamp);
 982  -- find file by sha1, 10 bytes will be enough for hashes to be indexed
 983  CREATE INDEX /*i*/fa_sha1 ON /*_*/filearchive (fa_sha1(10));
 984  
 985  
 986  --
 987  -- Store information about newly uploaded files before they're
 988  -- moved into the actual filestore
 989  --
 990  CREATE TABLE /*_*/uploadstash (
 991    us_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
 992  
 993    -- the user who uploaded the file.
 994    us_user int unsigned NOT NULL,
 995  
 996    -- file key. this is how applications actually search for the file.
 997    -- this might go away, or become the primary key.
 998    us_key varchar(255) NOT NULL,
 999  
1000    -- the original path
1001    us_orig_path varchar(255) NOT NULL,
1002  
1003    -- the temporary path at which the file is actually stored
1004    us_path varchar(255) NOT NULL,
1005  
1006    -- which type of upload the file came from (sometimes)
1007    us_source_type varchar(50),
1008  
1009    -- the date/time on which the file was added
1010    us_timestamp varbinary(14) NOT NULL,
1011  
1012    us_status varchar(50) NOT NULL,
1013  
1014    -- chunk counter starts at 0, current offset is stored in us_size
1015    us_chunk_inx int unsigned NULL,
1016  
1017    -- Serialized file properties from FSFile::getProps()
1018    us_props blob,
1019  
1020    -- file size in bytes
1021    us_size int unsigned NOT NULL,
1022    -- this hash comes from FSFile::getSha1Base36(), and is 31 characters
1023    us_sha1 varchar(31) NOT NULL,
1024    us_mime varchar(255),
1025    -- Media type as defined by the MEDIATYPE_xxx constants, should duplicate definition in the image table
1026    us_media_type ENUM("UNKNOWN", "BITMAP", "DRAWING", "AUDIO", "VIDEO", "MULTIMEDIA", "OFFICE", "TEXT", "EXECUTABLE", "ARCHIVE") default NULL,
1027    -- image-specific properties
1028    us_image_width int unsigned,
1029    us_image_height int unsigned,
1030    us_image_bits smallint unsigned
1031  
1032  ) /*$wgDBTableOptions*/;
1033  
1034  -- sometimes there's a delete for all of a user's stuff.
1035  CREATE INDEX /*i*/us_user ON /*_*/uploadstash (us_user);
1036  -- pick out files by key, enforce key uniqueness
1037  CREATE UNIQUE INDEX /*i*/us_key ON /*_*/uploadstash (us_key);
1038  -- the abandoned upload cleanup script needs this
1039  CREATE INDEX /*i*/us_timestamp ON /*_*/uploadstash (us_timestamp);
1040  
1041  
1042  --
1043  -- Primarily a summary table for Special:Recentchanges,
1044  -- this table contains some additional info on edits from
1045  -- the last few days, see Article::editUpdates()
1046  --
1047  CREATE TABLE /*_*/recentchanges (
1048    rc_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,
1049    rc_timestamp varbinary(14) NOT NULL default '',
1050  
1051    -- As in revision
1052    rc_user int unsigned NOT NULL default 0,
1053    rc_user_text varchar(255) binary NOT NULL,
1054  
1055    -- When pages are renamed, their RC entries do _not_ change.
1056    rc_namespace int NOT NULL default 0,
1057    rc_title varchar(255) binary NOT NULL default '',
1058  
1059    -- as in revision...
1060    rc_comment varchar(255) binary NOT NULL default '',
1061    rc_minor tinyint unsigned NOT NULL default 0,
1062  
1063    -- Edits by user accounts with the 'bot' rights key are
1064    -- marked with a 1 here, and will be hidden from the
1065    -- default view.
1066    rc_bot tinyint unsigned NOT NULL default 0,
1067  
1068    -- Set if this change corresponds to a page creation
1069    rc_new tinyint unsigned NOT NULL default 0,
1070  
1071    -- Key to page_id (was cur_id prior to 1.5).
1072    -- This will keep links working after moves while
1073    -- retaining the at-the-time name in the changes list.
1074    rc_cur_id int unsigned NOT NULL default 0,
1075  
1076    -- rev_id of the given revision
1077    rc_this_oldid int unsigned NOT NULL default 0,
1078  
1079    -- rev_id of the prior revision, for generating diff links.
1080    rc_last_oldid int unsigned NOT NULL default 0,
1081  
1082    -- The type of change entry (RC_EDIT,RC_NEW,RC_LOG,RC_EXTERNAL)
1083    rc_type tinyint unsigned NOT NULL default 0,
1084  
1085    -- The source of the change entry (replaces rc_type)
1086    -- default of '' is temporary, needed for initial migration
1087    rc_source varchar(16) binary not null default '',
1088  
1089    -- If the Recent Changes Patrol option is enabled,
1090    -- users may mark edits as having been reviewed to
1091    -- remove a warning flag on the RC list.
1092    -- A value of 1 indicates the page has been reviewed.
1093    rc_patrolled tinyint unsigned NOT NULL default 0,
1094  
1095    -- Recorded IP address the edit was made from, if the
1096    -- $wgPutIPinRC option is enabled.
1097    rc_ip varbinary(40) NOT NULL default '',
1098  
1099    -- Text length in characters before
1100    -- and after the edit
1101    rc_old_len int,
1102    rc_new_len int,
1103  
1104    -- Visibility of recent changes items, bitfield
1105    rc_deleted tinyint unsigned NOT NULL default 0,
1106  
1107    -- Value corresponding to log_id, specific log entries
1108    rc_logid int unsigned NOT NULL default 0,
1109    -- Store log type info here, or null
1110    rc_log_type varbinary(255) NULL default NULL,
1111    -- Store log action or null
1112    rc_log_action varbinary(255) NULL default NULL,
1113    -- Log params
1114    rc_params blob NULL
1115  ) /*$wgDBTableOptions*/;
1116  
1117  CREATE INDEX /*i*/rc_timestamp ON /*_*/recentchanges (rc_timestamp);
1118  CREATE INDEX /*i*/rc_namespace_title ON /*_*/recentchanges (rc_namespace, rc_title);
1119  CREATE INDEX /*i*/rc_cur_id ON /*_*/recentchanges (rc_cur_id);
1120  CREATE INDEX /*i*/new_name_timestamp ON /*_*/recentchanges (rc_new,rc_namespace,rc_timestamp);
1121  CREATE INDEX /*i*/rc_ip ON /*_*/recentchanges (rc_ip);
1122  CREATE INDEX /*i*/rc_ns_usertext ON /*_*/recentchanges (rc_namespace, rc_user_text);
1123  CREATE INDEX /*i*/rc_user_text ON /*_*/recentchanges (rc_user_text, rc_timestamp);
1124  
1125  
1126  CREATE TABLE /*_*/watchlist (
1127    -- Key to user.user_id
1128    wl_user int unsigned NOT NULL,
1129  
1130    -- Key to page_namespace/page_title
1131    -- Note that users may watch pages which do not exist yet,
1132    -- or existed in the past but have been deleted.
1133    wl_namespace int NOT NULL default 0,
1134    wl_title varchar(255) binary NOT NULL default '',
1135  
1136    -- Timestamp used to send notification e-mails and show "updated since last visit" markers on
1137    -- history and recent changes / watchlist. Set to NULL when the user visits the latest revision
1138    -- of the page, which means that they should be sent an e-mail on the next change.
1139    wl_notificationtimestamp varbinary(14)
1140  
1141  ) /*$wgDBTableOptions*/;
1142  
1143  CREATE UNIQUE INDEX /*i*/wl_user ON /*_*/watchlist (wl_user, wl_namespace, wl_title);
1144  CREATE INDEX /*i*/namespace_title ON /*_*/watchlist (wl_namespace, wl_title);
1145  CREATE INDEX /*i*/wl_user_notificationtimestamp ON /*_*/watchlist (wl_user, wl_notificationtimestamp);
1146  
1147  
1148  --
1149  -- When using the default MySQL search backend, page titles
1150  -- and text are munged to strip markup, do Unicode case folding,
1151  -- and prepare the result for MySQL's fulltext index.
1152  --
1153  -- This table must be MyISAM; InnoDB does not support the needed
1154  -- fulltext index.
1155  --
1156  CREATE TABLE /*_*/searchindex (
1157    -- Key to page_id
1158    si_page int unsigned NOT NULL,
1159  
1160    -- Munged version of title
1161    si_title varchar(255) NOT NULL default '',
1162  
1163    -- Munged version of body text
1164    si_text mediumtext NOT NULL
1165  ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
1166  
1167  CREATE UNIQUE INDEX /*i*/si_page ON /*_*/searchindex (si_page);
1168  CREATE FULLTEXT INDEX /*i*/si_title ON /*_*/searchindex (si_title);
1169  CREATE FULLTEXT INDEX /*i*/si_text ON /*_*/searchindex (si_text);
1170  
1171  
1172  --
1173  -- Recognized interwiki link prefixes
1174  --
1175  CREATE TABLE /*_*/interwiki (
1176    -- The interwiki prefix, (e.g. "Meatball", or the language prefix "de")
1177    iw_prefix varchar(32) NOT NULL,
1178  
1179    -- The URL of the wiki, with "$1" as a placeholder for an article name.
1180    -- Any spaces in the name will be transformed to underscores before
1181    -- insertion.
1182    iw_url blob NOT NULL,
1183  
1184    -- The URL of the file api.php
1185    iw_api blob NOT NULL,
1186  
1187    -- The name of the database (for a connection to be established with wfGetLB( 'wikiid' ))
1188    iw_wikiid varchar(64) NOT NULL,
1189  
1190    -- A boolean value indicating whether the wiki is in this project
1191    -- (used, for example, to detect redirect loops)
1192    iw_local bool NOT NULL,
1193  
1194    -- Boolean value indicating whether interwiki transclusions are allowed.
1195    iw_trans tinyint NOT NULL default 0
1196  ) /*$wgDBTableOptions*/;
1197  
1198  CREATE UNIQUE INDEX /*i*/iw_prefix ON /*_*/interwiki (iw_prefix);
1199  
1200  
1201  --
1202  -- Used for caching expensive grouped queries
1203  --
1204  CREATE TABLE /*_*/querycache (
1205    -- A key name, generally the base name of of the special page.
1206    qc_type varbinary(32) NOT NULL,
1207  
1208    -- Some sort of stored value. Sizes, counts...
1209    qc_value int unsigned NOT NULL default 0,
1210  
1211    -- Target namespace+title
1212    qc_namespace int NOT NULL default 0,
1213    qc_title varchar(255) binary NOT NULL default ''
1214  ) /*$wgDBTableOptions*/;
1215  
1216  CREATE INDEX /*i*/qc_type ON /*_*/querycache (qc_type,qc_value);
1217  
1218  
1219  --
1220  -- For a few generic cache operations if not using Memcached
1221  --
1222  CREATE TABLE /*_*/objectcache (
1223    keyname varbinary(255) NOT NULL default '' PRIMARY KEY,
1224    value mediumblob,
1225    exptime datetime
1226  ) /*$wgDBTableOptions*/;
1227  CREATE INDEX /*i*/exptime ON /*_*/objectcache (exptime);
1228  
1229  
1230  --
1231  -- Cache of interwiki transclusion
1232  --
1233  CREATE TABLE /*_*/transcache (
1234    tc_url varbinary(255) NOT NULL,
1235    tc_contents text,
1236    tc_time binary(14) NOT NULL
1237  ) /*$wgDBTableOptions*/;
1238  
1239  CREATE UNIQUE INDEX /*i*/tc_url_idx ON /*_*/transcache (tc_url);
1240  
1241  
1242  CREATE TABLE /*_*/logging (
1243    -- Log ID, for referring to this specific log entry, probably for deletion and such.
1244    log_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
1245  
1246    -- Symbolic keys for the general log type and the action type
1247    -- within the log. The output format will be controlled by the
1248    -- action field, but only the type controls categorization.
1249    log_type varbinary(32) NOT NULL default '',
1250    log_action varbinary(32) NOT NULL default '',
1251  
1252    -- Timestamp. Duh.
1253    log_timestamp binary(14) NOT NULL default '19700101000000',
1254  
1255    -- The user who performed this action; key to user_id
1256    log_user int unsigned NOT NULL default 0,
1257  
1258    -- Name of the user who performed this action
1259    log_user_text varchar(255) binary NOT NULL default '',
1260  
1261    -- Key to the page affected. Where a user is the target,
1262    -- this will point to the user page.
1263    log_namespace int NOT NULL default 0,
1264    log_title varchar(255) binary NOT NULL default '',
1265    log_page int unsigned NULL,
1266  
1267    -- Freeform text. Interpreted as edit history comments.
1268    log_comment varchar(255) NOT NULL default '',
1269  
1270    -- miscellaneous parameters:
1271    -- LF separated list (old system) or serialized PHP array (new system)
1272    log_params blob NOT NULL,
1273  
1274    -- rev_deleted for logs
1275    log_deleted tinyint unsigned NOT NULL default 0
1276  ) /*$wgDBTableOptions*/;
1277  
1278  CREATE INDEX /*i*/type_time ON /*_*/logging (log_type, log_timestamp);
1279  CREATE INDEX /*i*/user_time ON /*_*/logging (log_user, log_timestamp);
1280  CREATE INDEX /*i*/page_time ON /*_*/logging (log_namespace, log_title, log_timestamp);
1281  CREATE INDEX /*i*/times ON /*_*/logging (log_timestamp);
1282  CREATE INDEX /*i*/log_user_type_time ON /*_*/logging (log_user, log_type, log_timestamp);
1283  CREATE INDEX /*i*/log_page_id_time ON /*_*/logging (log_page,log_timestamp);
1284  CREATE INDEX /*i*/type_action ON /*_*/logging (log_type, log_action, log_timestamp);
1285  CREATE INDEX /*i*/log_user_text_type_time ON /*_*/logging (log_user_text, log_type, log_timestamp);
1286  CREATE INDEX /*i*/log_user_text_time ON /*_*/logging (log_user_text, log_timestamp);
1287  
1288  
1289  CREATE TABLE /*_*/log_search (
1290    -- The type of ID (rev ID, log ID, rev timestamp, username)
1291    ls_field varbinary(32) NOT NULL,
1292    -- The value of the ID
1293    ls_value varchar(255) NOT NULL,
1294    -- Key to log_id
1295    ls_log_id int unsigned NOT NULL default 0
1296  ) /*$wgDBTableOptions*/;
1297  CREATE UNIQUE INDEX /*i*/ls_field_val ON /*_*/log_search (ls_field,ls_value,ls_log_id);
1298  CREATE INDEX /*i*/ls_log_id ON /*_*/log_search (ls_log_id);
1299  
1300  
1301  -- Jobs performed by parallel apache threads or a command-line daemon
1302  CREATE TABLE /*_*/job (
1303    job_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
1304  
1305    -- Command name
1306    -- Limited to 60 to prevent key length overflow
1307    job_cmd varbinary(60) NOT NULL default '',
1308  
1309    -- Namespace and title to act on
1310    -- Should be 0 and '' if the command does not operate on a title
1311    job_namespace int NOT NULL,
1312    job_title varchar(255) binary NOT NULL,
1313  
1314    -- Timestamp of when the job was inserted
1315    -- NULL for jobs added before addition of the timestamp
1316    job_timestamp varbinary(14) NULL default NULL,
1317  
1318    -- Any other parameters to the command
1319    -- Stored as a PHP serialized array, or an empty string if there are no parameters
1320    job_params blob NOT NULL,
1321  
1322    -- Random, non-unique, number used for job acquisition (for lock concurrency)
1323    job_random integer unsigned NOT NULL default 0,
1324  
1325    -- The number of times this job has been locked
1326    job_attempts integer unsigned NOT NULL default 0,
1327  
1328    -- Field that conveys process locks on rows via process UUIDs
1329    job_token varbinary(32) NOT NULL default '',
1330  
1331    -- Timestamp when the job was locked
1332    job_token_timestamp varbinary(14) NULL default NULL,
1333  
1334    -- Base 36 SHA1 of the job parameters relevant to detecting duplicates
1335    job_sha1 varbinary(32) NOT NULL default ''
1336  ) /*$wgDBTableOptions*/;
1337  
1338  CREATE INDEX /*i*/job_sha1 ON /*_*/job (job_sha1);
1339  CREATE INDEX /*i*/job_cmd_token ON /*_*/job (job_cmd,job_token,job_random);
1340  CREATE INDEX /*i*/job_cmd_token_id ON /*_*/job (job_cmd,job_token,job_id);
1341  CREATE INDEX /*i*/job_cmd ON /*_*/job (job_cmd, job_namespace, job_title, job_params(128));
1342  CREATE INDEX /*i*/job_timestamp ON /*_*/job (job_timestamp);
1343  
1344  
1345  -- Details of updates to cached special pages
1346  CREATE TABLE /*_*/querycache_info (
1347    -- Special page name
1348    -- Corresponds to a qc_type value
1349    qci_type varbinary(32) NOT NULL default '',
1350  
1351    -- Timestamp of last update
1352    qci_timestamp binary(14) NOT NULL default '19700101000000'
1353  ) /*$wgDBTableOptions*/;
1354  
1355  CREATE UNIQUE INDEX /*i*/qci_type ON /*_*/querycache_info (qci_type);
1356  
1357  
1358  -- For each redirect, this table contains exactly one row defining its target
1359  CREATE TABLE /*_*/redirect (
1360    -- Key to the page_id of the redirect page
1361    rd_from int unsigned NOT NULL default 0 PRIMARY KEY,
1362  
1363    -- Key to page_namespace/page_title of the target page.
1364    -- The target page may or may not exist, and due to renames
1365    -- and deletions may refer to different page records as time
1366    -- goes by.
1367    rd_namespace int NOT NULL default 0,
1368    rd_title varchar(255) binary NOT NULL default '',
1369    rd_interwiki varchar(32) default NULL,
1370    rd_fragment varchar(255) binary default NULL
1371  ) /*$wgDBTableOptions*/;
1372  
1373  CREATE INDEX /*i*/rd_ns_title ON /*_*/redirect (rd_namespace,rd_title,rd_from);
1374  
1375  
1376  -- Used for caching expensive grouped queries that need two links (for example double-redirects)
1377  CREATE TABLE /*_*/querycachetwo (
1378    -- A key name, generally the base name of of the special page.
1379    qcc_type varbinary(32) NOT NULL,
1380  
1381    -- Some sort of stored value. Sizes, counts...
1382    qcc_value int unsigned NOT NULL default 0,
1383  
1384    -- Target namespace+title
1385    qcc_namespace int NOT NULL default 0,
1386    qcc_title varchar(255) binary NOT NULL default '',
1387  
1388    -- Target namespace+title2
1389    qcc_namespacetwo int NOT NULL default 0,
1390    qcc_titletwo varchar(255) binary NOT NULL default ''
1391  ) /*$wgDBTableOptions*/;
1392  
1393  CREATE INDEX /*i*/qcc_type ON /*_*/querycachetwo (qcc_type,qcc_value);
1394  CREATE INDEX /*i*/qcc_title ON /*_*/querycachetwo (qcc_type,qcc_namespace,qcc_title);
1395  CREATE INDEX /*i*/qcc_titletwo ON /*_*/querycachetwo (qcc_type,qcc_namespacetwo,qcc_titletwo);
1396  
1397  
1398  -- Used for storing page restrictions (i.e. protection levels)
1399  CREATE TABLE /*_*/page_restrictions (
1400    -- Field for an ID for this restrictions row (sort-key for Special:ProtectedPages)
1401    pr_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT,
1402    -- Page to apply restrictions to (Foreign Key to page).
1403    pr_page int NOT NULL,
1404    -- The protection type (edit, move, etc)
1405    pr_type varbinary(60) NOT NULL,
1406    -- The protection level (Sysop, autoconfirmed, etc)
1407    pr_level varbinary(60) NOT NULL,
1408    -- Whether or not to cascade the protection down to pages transcluded.
1409    pr_cascade tinyint NOT NULL,
1410    -- Field for future support of per-user restriction.
1411    pr_user int NULL,
1412    -- Field for time-limited protection.
1413    pr_expiry varbinary(14) NULL
1414  ) /*$wgDBTableOptions*/;
1415  
1416  CREATE UNIQUE INDEX /*i*/pr_pagetype ON /*_*/page_restrictions (pr_page,pr_type);
1417  CREATE INDEX /*i*/pr_typelevel ON /*_*/page_restrictions (pr_type,pr_level);
1418  CREATE INDEX /*i*/pr_level ON /*_*/page_restrictions (pr_level);
1419  CREATE INDEX /*i*/pr_cascade ON /*_*/page_restrictions (pr_cascade);
1420  
1421  
1422  -- Protected titles - nonexistent pages that have been protected
1423  CREATE TABLE /*_*/protected_titles (
1424    pt_namespace int NOT NULL,
1425    pt_title varchar(255) binary NOT NULL,
1426    pt_user int unsigned NOT NULL,
1427    pt_reason tinyblob,
1428    pt_timestamp binary(14) NOT NULL,
1429    pt_expiry varbinary(14) NOT NULL default '',
1430    pt_create_perm varbinary(60) NOT NULL
1431  ) /*$wgDBTableOptions*/;
1432  
1433  CREATE UNIQUE INDEX /*i*/pt_namespace_title ON /*_*/protected_titles (pt_namespace,pt_title);
1434  CREATE INDEX /*i*/pt_timestamp ON /*_*/protected_titles (pt_timestamp);
1435  
1436  
1437  -- Name/value pairs indexed by page_id
1438  CREATE TABLE /*_*/page_props (
1439    pp_page int NOT NULL,
1440    pp_propname varbinary(60) NOT NULL,
1441    pp_value blob NOT NULL,
1442    pp_sortkey float DEFAULT NULL
1443  ) /*$wgDBTableOptions*/;
1444  
1445  CREATE UNIQUE INDEX /*i*/pp_page_propname ON /*_*/page_props (pp_page,pp_propname);
1446  CREATE UNIQUE INDEX /*i*/pp_propname_page ON /*_*/page_props (pp_propname,pp_page);
1447  CREATE UNIQUE INDEX /*i*/pp_propname_sortkey_page ON /*_*/page_props (pp_propname,pp_sortkey,pp_page);
1448  
1449  -- A table to log updates, one text key row per update.
1450  CREATE TABLE /*_*/updatelog (
1451    ul_key varchar(255) NOT NULL PRIMARY KEY,
1452    ul_value blob
1453  ) /*$wgDBTableOptions*/;
1454  
1455  
1456  -- A table to track tags for revisions, logs and recent changes.
1457  CREATE TABLE /*_*/change_tag (
1458    -- RCID for the change
1459    ct_rc_id int NULL,
1460    -- LOGID for the change
1461    ct_log_id int NULL,
1462    -- REVID for the change
1463    ct_rev_id int NULL,
1464    -- Tag applied
1465    ct_tag varchar(255) NOT NULL,
1466    -- Parameters for the tag, presently unused
1467    ct_params blob NULL
1468  ) /*$wgDBTableOptions*/;
1469  
1470  CREATE UNIQUE INDEX /*i*/change_tag_rc_tag ON /*_*/change_tag (ct_rc_id,ct_tag);
1471  CREATE UNIQUE INDEX /*i*/change_tag_log_tag ON /*_*/change_tag (ct_log_id,ct_tag);
1472  CREATE UNIQUE INDEX /*i*/change_tag_rev_tag ON /*_*/change_tag (ct_rev_id,ct_tag);
1473  -- Covering index, so we can pull all the info only out of the index.
1474  CREATE INDEX /*i*/change_tag_tag_id ON /*_*/change_tag (ct_tag,ct_rc_id,ct_rev_id,ct_log_id);
1475  
1476  
1477  -- Rollup table to pull a LIST of tags simply without ugly GROUP_CONCAT
1478  -- that only works on MySQL 4.1+
1479  CREATE TABLE /*_*/tag_summary (
1480    -- RCID for the change
1481    ts_rc_id int NULL,
1482    -- LOGID for the change
1483    ts_log_id int NULL,
1484    -- REVID for the change
1485    ts_rev_id int NULL,
1486    -- Comma-separated list of tags
1487    ts_tags blob NOT NULL
1488  ) /*$wgDBTableOptions*/;
1489  
1490  CREATE UNIQUE INDEX /*i*/tag_summary_rc_id ON /*_*/tag_summary (ts_rc_id);
1491  CREATE UNIQUE INDEX /*i*/tag_summary_log_id ON /*_*/tag_summary (ts_log_id);
1492  CREATE UNIQUE INDEX /*i*/tag_summary_rev_id ON /*_*/tag_summary (ts_rev_id);
1493  
1494  
1495  CREATE TABLE /*_*/valid_tag (
1496    vt_tag varchar(255) NOT NULL PRIMARY KEY
1497  ) /*$wgDBTableOptions*/;
1498  
1499  -- Table for storing localisation data
1500  CREATE TABLE /*_*/l10n_cache (
1501    -- Language code
1502    lc_lang varbinary(32) NOT NULL,
1503    -- Cache key
1504    lc_key varchar(255) NOT NULL,
1505    -- Value
1506    lc_value mediumblob NOT NULL
1507  ) /*$wgDBTableOptions*/;
1508  CREATE INDEX /*i*/lc_lang_key ON /*_*/l10n_cache (lc_lang, lc_key);
1509  
1510  -- Table for caching JSON message blobs for the resource loader
1511  CREATE TABLE /*_*/msg_resource (
1512    -- Resource name
1513    mr_resource varbinary(255) NOT NULL,
1514    -- Language code
1515    mr_lang varbinary(32) NOT NULL,
1516    -- JSON blob
1517    mr_blob mediumblob NOT NULL,
1518    -- Timestamp of last update
1519    mr_timestamp binary(14) NOT NULL
1520  ) /*$wgDBTableOptions*/;
1521  CREATE UNIQUE INDEX /*i*/mr_resource_lang ON /*_*/msg_resource (mr_resource, mr_lang);
1522  
1523  -- Table for administering which message is contained in which resource
1524  CREATE TABLE /*_*/msg_resource_links (
1525    mrl_resource varbinary(255) NOT NULL,
1526    -- Message key
1527    mrl_message varbinary(255) NOT NULL
1528  ) /*$wgDBTableOptions*/;
1529  CREATE UNIQUE INDEX /*i*/mrl_message_resource ON /*_*/msg_resource_links (mrl_message, mrl_resource);
1530  
1531  -- Table caching which local files a module depends on that aren't
1532  -- registered directly, used for fast retrieval of file dependency.
1533  -- Currently only used for tracking images that CSS depends on
1534  CREATE TABLE /*_*/module_deps (
1535    -- Module name
1536    md_module varbinary(255) NOT NULL,
1537    -- Skin name
1538    md_skin varbinary(32) NOT NULL,
1539    -- JSON blob with file dependencies
1540    md_deps mediumblob NOT NULL
1541  ) /*$wgDBTableOptions*/;
1542  CREATE UNIQUE INDEX /*i*/md_module_skin ON /*_*/module_deps (md_module, md_skin);
1543  
1544  -- Holds all the sites known to the wiki.
1545  CREATE TABLE /*_*/sites (
1546    -- Numeric id of the site
1547    site_id                    INT UNSIGNED        NOT NULL PRIMARY KEY AUTO_INCREMENT,
1548  
1549    -- Global identifier for the site, ie 'enwiktionary'
1550    site_global_key            varbinary(32)       NOT NULL,
1551  
1552    -- Type of the site, ie 'mediawiki'
1553    site_type                  varbinary(32)       NOT NULL,
1554  
1555    -- Group of the site, ie 'wikipedia'
1556    site_group                 varbinary(32)       NOT NULL,
1557  
1558    -- Source of the site data, ie 'local', 'wikidata', 'my-magical-repo'
1559    site_source                varbinary(32)       NOT NULL,
1560  
1561    -- Language code of the sites primary language.
1562    site_language              varbinary(32)       NOT NULL,
1563  
1564    -- Protocol of the site, ie 'http://', 'irc://', '//'
1565    -- This field is an index for lookups and is build from type specific data in site_data.
1566    site_protocol              varbinary(32)       NOT NULL,
1567  
1568    -- Domain of the site in reverse order, ie 'org.mediawiki.www.'
1569    -- This field is an index for lookups and is build from type specific data in site_data.
1570    site_domain                VARCHAR(255)        NOT NULL,
1571  
1572    -- Type dependent site data.
1573    site_data                  BLOB                NOT NULL,
1574  
1575    -- If site.tld/path/key:pageTitle should forward users to  the page on
1576    -- the actual site, where "key" is the local identifier.
1577    site_forward              bool                NOT NULL,
1578  
1579    -- Type dependent site config.
1580    -- For instance if template transclusion should be allowed if it's a MediaWiki.
1581    site_config               BLOB                NOT NULL
1582  ) /*$wgDBTableOptions*/;
1583  
1584  CREATE UNIQUE INDEX /*i*/sites_global_key ON /*_*/sites (site_global_key);
1585  CREATE INDEX /*i*/sites_type ON /*_*/sites (site_type);
1586  CREATE INDEX /*i*/sites_group ON /*_*/sites (site_group);
1587  CREATE INDEX /*i*/sites_source ON /*_*/sites (site_source);
1588  CREATE INDEX /*i*/sites_language ON /*_*/sites (site_language);
1589  CREATE INDEX /*i*/sites_protocol ON /*_*/sites (site_protocol);
1590  CREATE INDEX /*i*/sites_domain ON /*_*/sites (site_domain);
1591  CREATE INDEX /*i*/sites_forward ON /*_*/sites (site_forward);
1592  
1593  -- Links local site identifiers to their corresponding site.
1594  CREATE TABLE /*_*/site_identifiers (
1595    -- Key on site.site_id
1596    si_site                    INT UNSIGNED        NOT NULL,
1597  
1598    -- local key type, ie 'interwiki' or 'langlink'
1599    si_type                    varbinary(32)       NOT NULL,
1600  
1601    -- local key value, ie 'en' or 'wiktionary'
1602    si_key                     varbinary(32)       NOT NULL
1603  ) /*$wgDBTableOptions*/;
1604  
1605  CREATE UNIQUE INDEX /*i*/site_ids_type ON /*_*/site_identifiers (si_type, si_key);
1606  CREATE INDEX /*i*/site_ids_site ON /*_*/site_identifiers (si_site);
1607  CREATE INDEX /*i*/site_ids_key ON /*_*/site_identifiers (si_key);
1608  
1609  -- vim: sw=2 sts=2 et