平均偏差的计算公式

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select * from tbl_Articles WHERE ArticleID=2988777 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2988777 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2988777 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1108828,1047441,1079191,1091065,1067966,1068118,995175,1082203,1052952,1077074,1121320,1123271,1077960,1123279,1048236,1112642,1110067,1084471,1051917,1065739,1110017,1056510,1043609,1115755,1073846,1063021,1061426,1100849,1111696,1063159) ORDER BY field (ArticleID,1108828,1047441,1079191,1091065,1067966,1068118,995175,1082203,1052952,1077074,1121320,1123271,1077960,1123279,1048236,1112642,1110067,1084471,1051917,1065739,1110017,1056510,1043609,1115755,1073846,1063021,1061426,1100849,1111696,1063159)