page_lang varbinary(35) DEFAULT NULL
) /*$wgDBTableOptions*/;
+-- The title index. Care must be taken to always specify a namespace when
+-- by title, so that the index is used. Even listing all known namespaces
+-- with IN() is better than omitting page_namespace from the WHERE clause.
CREATE UNIQUE INDEX /*i*/name_title ON /*_*/page (page_namespace,page_title);
+
+-- The index for Special:Random
CREATE INDEX /*i*/page_random ON /*_*/page (page_random);
+
+-- Questionable utility, used by ProofreadPage, possibly DynamicPageList.
+-- ApiQueryAllPages unconditionally filters on namespace and so hopefully does
+-- not use it.
CREATE INDEX /*i*/page_len ON /*_*/page (page_len);
+
+-- The index for Special:Shortpages and Special:Longpages. Also SiteStats::articles()
+-- in 'comma' counting mode, MessageCache::loadFromDB().
CREATE INDEX /*i*/page_redirect_namespace_len ON /*_*/page (page_is_redirect, page_namespace, page_len);
--
) /*$wgDBTableOptions*/ MAX_ROWS=10000000 AVG_ROW_LENGTH=1024;
-- In case tables are created as MyISAM, use row hints for MySQL <5.0 to avoid 4GB limit
+-- The index is proposed for removal, do not use it in new code: T163532.
+-- Used for ordering revisions within a page by rev_id, which is usually
+-- incorrect, since rev_timestamp is normally the correct order. It can also
+-- be used by dumpBackup.php, if a page and rev_id range is specified.
CREATE INDEX /*i*/rev_page_id ON /*_*/revision (rev_page, rev_id);
+
+-- Used by ApiQueryAllRevisions
CREATE INDEX /*i*/rev_timestamp ON /*_*/revision (rev_timestamp);
+
+-- History index
CREATE INDEX /*i*/page_timestamp ON /*_*/revision (rev_page,rev_timestamp);
+
+-- Logged-in user contributions index
CREATE INDEX /*i*/user_timestamp ON /*_*/revision (rev_user,rev_timestamp);
+
+-- Anonymous user countributions index
CREATE INDEX /*i*/usertext_timestamp ON /*_*/revision (rev_user_text,rev_timestamp);
+
+-- Credits index. This is scanned in order to compile credits lists for pages,
+-- in ApiQueryContributors. Also for ApiQueryRevisions if rvuser is specified
+-- and is a logged-in user.
CREATE INDEX /*i*/page_user_timestamp ON /*_*/revision (rev_page,rev_user,rev_timestamp);
--
ar_content_format varbinary(64) DEFAULT NULL
) /*$wgDBTableOptions*/;
+-- Index for Special:Undelete to page through deleted revisions
CREATE INDEX /*i*/name_title_timestamp ON /*_*/archive (ar_namespace,ar_title,ar_timestamp);
+
+-- Index for Special:DeletedContributions
CREATE INDEX /*i*/ar_usertext_timestamp ON /*_*/archive (ar_user_text,ar_timestamp);
+
+-- Index for linking archive rows with tables that normally link with revision
+-- rows, such as change_tag.
CREATE INDEX /*i*/ar_revid ON /*_*/archive (ar_rev_id);
pl_title varchar(255) binary NOT NULL default ''
) /*$wgDBTableOptions*/;
+-- Forward index, for page edit, save
CREATE UNIQUE INDEX /*i*/pl_from ON /*_*/pagelinks (pl_from,pl_namespace,pl_title);
+
+-- Reverse index, for Special:Whatlinkshere
CREATE INDEX /*i*/pl_namespace ON /*_*/pagelinks (pl_namespace,pl_title,pl_from);
+
+-- Index for Special:Whatlinkshere with namespace filter
CREATE INDEX /*i*/pl_backlinks_namespace ON /*_*/pagelinks (pl_from_namespace,pl_namespace,pl_title,pl_from);
tl_title varchar(255) binary NOT NULL default ''
) /*$wgDBTableOptions*/;
+-- Forward index, for page edit, save
CREATE UNIQUE INDEX /*i*/tl_from ON /*_*/templatelinks (tl_from,tl_namespace,tl_title);
+
+-- Reverse index, for Special:Whatlinkshere
CREATE INDEX /*i*/tl_namespace ON /*_*/templatelinks (tl_namespace,tl_title,tl_from);
+
+-- Index for Special:Whatlinkshere with namespace filter
CREATE INDEX /*i*/tl_backlinks_namespace ON /*_*/templatelinks (tl_from_namespace,tl_namespace,tl_title,tl_from);
il_to varchar(255) binary NOT NULL default ''
) /*$wgDBTableOptions*/;
+-- Forward index, for cache invalidation on file update, etc.
CREATE UNIQUE INDEX /*i*/il_from ON /*_*/imagelinks (il_from,il_to);
+
+-- Reverse index, for Special:Whatlinkshere and file description page local usage
CREATE INDEX /*i*/il_to ON /*_*/imagelinks (il_to,il_from);
+
+-- Index for Special:Whatlinkshere with namespace filter
CREATE INDEX /*i*/il_backlinks_namespace ON /*_*/imagelinks (il_from_namespace,il_to,il_from);
el_index_60 varbinary(60) NOT NULL default ''
) /*$wgDBTableOptions*/;
+-- Forward index, for page edit, save
CREATE INDEX /*i*/el_from ON /*_*/externallinks (el_from, el_to(40));
+
+-- Index for Special:LinkSearch exact search
CREATE INDEX /*i*/el_to ON /*_*/externallinks (el_to(60), el_from);
+
+-- For Special:LinkSearch wildcard search
CREATE INDEX /*i*/el_index ON /*_*/externallinks (el_index(60));
+
+-- For Special:LinkSearch wildcard search with efficient paging by el_id
CREATE INDEX /*i*/el_index_60 ON /*_*/externallinks (el_index_60, el_id);
CREATE INDEX /*i*/el_from_index_60 ON /*_*/externallinks (el_from, el_index_60, el_id);
ll_title varchar(255) binary NOT NULL default ''
) /*$wgDBTableOptions*/;
+-- Forward index, for page edit, save, ApiQueryLanglinks
CREATE UNIQUE INDEX /*i*/ll_from ON /*_*/langlinks (ll_from, ll_lang);
+
+-- Index for ApiQueryLangbacklinks
CREATE INDEX /*i*/ll_lang ON /*_*/langlinks (ll_lang, ll_title);
iwl_title varchar(255) binary NOT NULL default ''
) /*$wgDBTableOptions*/;
+-- Forward index, for page edit, save, ApiQueryIWLinks
CREATE UNIQUE INDEX /*i*/iwl_from ON /*_*/iwlinks (iwl_from, iwl_prefix, iwl_title);
+
+-- Index for ApiQueryIWBacklinks
CREATE INDEX /*i*/iwl_prefix_title_from ON /*_*/iwlinks (iwl_prefix, iwl_title, iwl_from);
+
+-- Index for ApiQueryIWLinks
CREATE INDEX /*i*/iwl_prefix_from_title ON /*_*/iwlinks (iwl_prefix, iwl_from, iwl_title);
-- Any new options which prevent collisions should be included
CREATE UNIQUE INDEX /*i*/ipb_address ON /*_*/ipblocks (ipb_address(255), ipb_user, ipb_auto, ipb_anon_only);
+-- For querying whether a logged-in user is blocked
CREATE INDEX /*i*/ipb_user ON /*_*/ipblocks (ipb_user);
+
+-- For querying whether an IP address is in any range
CREATE INDEX /*i*/ipb_range ON /*_*/ipblocks (ipb_range_start(8), ipb_range_end(8));
+
+-- Index for Special:BlockList
CREATE INDEX /*i*/ipb_timestamp ON /*_*/ipblocks (ipb_timestamp);
+
+-- Index for table pruning
CREATE INDEX /*i*/ipb_expiry ON /*_*/ipblocks (ipb_expiry);
+
+-- Index for removing autoblocks when a parent block is removed
CREATE INDEX /*i*/ipb_parent_block_id ON /*_*/ipblocks (ipb_parent_block_id);
rc_params blob NULL
) /*$wgDBTableOptions*/;
+-- Special:Recentchanges
CREATE INDEX /*i*/rc_timestamp ON /*_*/recentchanges (rc_timestamp);
+
+-- Special:Watchlist
CREATE INDEX /*i*/rc_namespace_title ON /*_*/recentchanges (rc_namespace, rc_title);
+
+-- Special:Recentchangeslinked when finding changes in pages linked from a page
CREATE INDEX /*i*/rc_cur_id ON /*_*/recentchanges (rc_cur_id);
+
+-- Special:Newpages
CREATE INDEX /*i*/new_name_timestamp ON /*_*/recentchanges (rc_new,rc_namespace,rc_timestamp);
+
+-- Blank unless $wgPutIPinRC=true (false at WMF), possibly used by extensions,
+-- but mostly replaced by CheckUser.
CREATE INDEX /*i*/rc_ip ON /*_*/recentchanges (rc_ip);
+
+-- Probably intended for Special:NewPages namespace filter
CREATE INDEX /*i*/rc_ns_usertext ON /*_*/recentchanges (rc_namespace, rc_user_text);
+
+-- SiteStats active user count, Special:ActiveUsers, Special:NewPages user filter
CREATE INDEX /*i*/rc_user_text ON /*_*/recentchanges (rc_user_text, rc_timestamp);
+
+-- ApiQueryRecentChanges (T140108)
CREATE INDEX /*i*/rc_name_type_patrolled_timestamp ON /*_*/recentchanges (rc_namespace, rc_type, rc_patrolled, rc_timestamp);
) /*$wgDBTableOptions*/;
+-- Special:Watchlist
CREATE UNIQUE INDEX /*i*/wl_user ON /*_*/watchlist (wl_user, wl_namespace, wl_title);
+
+-- Special:Movepage (WatchedItemStore::duplicateEntry)
CREATE INDEX /*i*/namespace_title ON /*_*/watchlist (wl_namespace, wl_title);
+
+-- ApiQueryWatchlistRaw changed filter
CREATE INDEX /*i*/wl_user_notificationtimestamp ON /*_*/watchlist (wl_user, wl_notificationtimestamp);
log_deleted tinyint unsigned NOT NULL default 0
) /*$wgDBTableOptions*/;
+-- Special:Log type filter
CREATE INDEX /*i*/type_time ON /*_*/logging (log_type, log_timestamp);
+
+-- Special:Log performer filter
CREATE INDEX /*i*/user_time ON /*_*/logging (log_user, log_timestamp);
+
+-- Special:Log title filter, log extract
CREATE INDEX /*i*/page_time ON /*_*/logging (log_namespace, log_title, log_timestamp);
+
+-- Special:Log unfiltered
CREATE INDEX /*i*/times ON /*_*/logging (log_timestamp);
+
+-- Special:Log filter by performer and type
CREATE INDEX /*i*/log_user_type_time ON /*_*/logging (log_user, log_type, log_timestamp);
+
+-- Apparently just used for a few maintenance pages (findMissingFiles.php, Flow).
+-- Could be removed?
CREATE INDEX /*i*/log_page_id_time ON /*_*/logging (log_page,log_timestamp);
+
+-- Special:Log action filter
CREATE INDEX /*i*/type_action ON /*_*/logging (log_type, log_action, log_timestamp);
+
+-- Special:Log filter by type and anonymous performer
CREATE INDEX /*i*/log_user_text_type_time ON /*_*/logging (log_user_text, log_type, log_timestamp);
+
+-- Special:Log filter by anonymous performer
CREATE INDEX /*i*/log_user_text_time ON /*_*/logging (log_user_text, log_timestamp);