低分率如何计算

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select * from tbl_Articles WHERE ArticleID=1214178 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1214178 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1214178 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(559048,595340,601192,777002,1027188,408640,706399,656841,1004568,645069,750132,610738,1111424,814379,976889,1053415,836989,1024702,964113,591621,661467,729875,1409007,773639,599755,517374,390629,391081,984501,538119) ORDER BY field (ArticleID,559048,595340,601192,777002,1027188,408640,706399,656841,1004568,645069,750132,610738,1111424,814379,976889,1053415,836989,1024702,964113,591621,661467,729875,1409007,773639,599755,517374,390629,391081,984501,538119)