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CREATE TABLE /*_*/pagelinks_tmp (
-- Key to the page_id of the page containing the link.
pl_from int unsigned NOT NULL default 0,
-- Namespace for this page
pl_from_namespace int NOT NULL default 0,
-- Key to page_namespace/page_title of the target page.
-- The target page may or may not exist, and due to renames
-- and deletions may refer to different page records as time
-- goes by.
pl_namespace int NOT NULL default 0,
pl_title varchar(255) binary NOT NULL default '',
PRIMARY KEY (pl_from,pl_namespace,pl_title)
) /*$wgDBTableOptions*/;
INSERT INTO /*_*/pagelinks_tmp (pl_from, pl_from_namespace, pl_namespace, pl_title)
SELECT pl_from, pl_from_namespace, pl_namespace, pl_title FROM /*_*/pagelinks;
DROP TABLE /*_*/pagelinks;
ALTER TABLE /*_*/pagelinks_tmp RENAME TO /*_*/pagelinks;
-- 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);
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