误差的平均值怎么求

页面:/news/view-171352/ | 耗时:0.8850 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=171352 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=171352 LIMIT 0,1
select * from tbl_Articles_sphinx where id=171352 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1093264,1123207,1042841,1065495,1042943,1125189,1048878,1071641,1065605,986890,1054136,1091183,1034501,1120316,1067265,1084081,1091025,1077104,1075793,1062993,1063021,1089620,1070995,1064613,1073503,1087625,1091952,1048506,1078737,1053308) ORDER BY field (ArticleID,1093264,1123207,1042841,1065495,1042943,1125189,1048878,1071641,1065605,986890,1054136,1091183,1034501,1120316,1067265,1084081,1091025,1077104,1075793,1062993,1063021,1089620,1070995,1064613,1073503,1087625,1091952,1048506,1078737,1053308)