速度和与速度差怎么计算

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select * from tbl_Articles WHERE ArticleID=270482 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=270482 LIMIT 0,1
select * from tbl_Articles_sphinx where id=270482 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1111340,1068102,1058265,1094053,1090993,1070882,1114270,1069473,1019199,1114608,1100849,1042879,1090048,960752,1088484,1109771,1118925,1081957,1065749,1097607,1114032,1058075,1080404,1078010,1121414,1078294,1122092,1101305,1111448,1071595) ORDER BY field (ArticleID,1111340,1068102,1058265,1094053,1090993,1070882,1114270,1069473,1019199,1114608,1100849,1042879,1090048,960752,1088484,1109771,1118925,1081957,1065749,1097607,1114032,1058075,1080404,1078010,1121414,1078294,1122092,1101305,1111448,1071595)