怎样清理储存空间不足

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select * from tbl_Articles WHERE ArticleID=2187491 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2187491 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2187491 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(733924,2012553,2010669,2018393,3404161,3496043,3238014,3501621,1908444,2387602,3475998,963569,3462011,390367,3144746,2759915,410266,1126016,3829607,447983,2229933,99213,2745125,969703,649050,588530,2646834,2904123,1163734,2906199) ORDER BY field (ArticleID,733924,2012553,2010669,2018393,3404161,3496043,3238014,3501621,1908444,2387602,3475998,963569,3462011,390367,3144746,2759915,410266,1126016,3829607,447983,2229933,99213,2745125,969703,649050,588530,2646834,2904123,1163734,2906199)