直接分配法如何计算

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select * from tbl_Articles WHERE ArticleID=3245301 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3245301 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3245301 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(692284,1841268,2255793,1488724,1132577,2919349,2725061,221008,1480713,1130874,2632636,2446838,1102756,1053922,577850,143997,2258101,1101193,2265285,693532,740731,1070262,1074542,1312920,2841723,1066694,1117968,1540950,2230810,1098219) ORDER BY field (ArticleID,692284,1841268,2255793,1488724,1132577,2919349,2725061,221008,1480713,1130874,2632636,2446838,1102756,1053922,577850,143997,2258101,1101193,2265285,693532,740731,1070262,1074542,1312920,2841723,1066694,1117968,1540950,2230810,1098219)