如何计算拟合优度

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select * from tbl_Articles WHERE ArticleID=2029783 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2029783 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2029783 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1488724,2956163,2404075,451393,1655230,413395,340578,1674404,569992,1099493,1053058,2921535,2913968,1130220,1050395,2696538,2485290,1670628,638927,2581966,649923,1049344,2155712,1064271,342310,1316170,304948,193479,281170,2129553) ORDER BY field (ArticleID,1488724,2956163,2404075,451393,1655230,413395,340578,1674404,569992,1099493,1053058,2921535,2913968,1130220,1050395,2696538,2485290,1670628,638927,2581966,649923,1049344,2155712,1064271,342310,1316170,304948,193479,281170,2129553)