2 ALTER TABLE /*$wgDBprefix*/externallinks
ADD COLUMN el_index_60
varbinary(60) NOT NULL DEFAULT '';
3 CREATE INDEX /*i*/el_index_60
ON /*_*/externallinks (el_index_60
, el_id
);
4 CREATE INDEX /*i*/el_from_index_60
ON /*_*/externallinks (el_from
, el_index_60
, el_id
);