--- /dev/null
+-- remove old_title and old_namespace, replace with old_articleid
+
+ALTER TABLE old
+ DROP COLUMN old_title,
+ DROP COLUMN old_namespace,
+ ADD COLUMN old_articleid INT(8) UNSIGNED NOT NULL;
+
+UPDATE old,cur
+ SET old_articleid=cur_id
+ WHERE old_title=cur_title
+ AND old_namespace=cur_namespace;
+
+DROP INDEX name_title_timestamp ON old;
+DROP INDEX name_title ON old;
+CREATE INDEX articleid_timestamp ON old (old_articleid, old_timestamp);
+CREATE INDEX articleid ON old (old_articleid);