Untitled query #51027

This query is marked as a draft This query has been published by Chaduvari.

SQL

use tewiki_p;
SELECT rev1.rev_actor,@rev_len1:=rev1.rev_len, @parent:=rev_parent_id
from revision as rev1
where rev_page=27889;
select @rev_len2=rev_len from revision where rev_id=@parent where rev_page=27889;
select @revision_length=@rev_len1-@rev_len2

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