分层抽样如何确定样本容量

页面:/news/view-2288782/ | 耗时:0.8861 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=2288782 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2288782 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2288782 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1065393,2166265,107588,1122956,1697521,112522,2671166,110568,1934441,3118853,109418,2638582,1099271,3092997,1605058,109027,2560407,313189,491476,108683,521637,1113724,1083030,1048712,331623,2172633,2906059,1045901,3122194,1102756) ORDER BY field (ArticleID,1065393,2166265,107588,1122956,1697521,112522,2671166,110568,1934441,3118853,109418,2638582,1099271,3092997,1605058,109027,2560407,313189,491476,108683,521637,1113724,1083030,1048712,331623,2172633,2906059,1045901,3122194,1102756)