方差怎么求

页面:/news/view-1879649/ | 耗时:0.5546 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=1879649 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1879649 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1879649 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1127761,1056160,2254899,1080649,1959881,1107337,1126062,1122104,1073900,1052819,1104813,1065749,1130808,1068148,1131283,1111448,1127793,1065131,1072699,1071661,1118116,1060721,1047045,1088746,1098963,1128049,1133061,1067613,1052445,1067695) ORDER BY field (ArticleID,1127761,1056160,2254899,1080649,1959881,1107337,1126062,1122104,1073900,1052819,1104813,1065749,1130808,1068148,1131283,1111448,1127793,1065131,1072699,1071661,1118116,1060721,1047045,1088746,1098963,1128049,1133061,1067613,1052445,1067695)