（多选）下列关于简单随机抽样的说法，正确的有（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30461' and id < 2461139 and id<>'2461139' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30461' and id > 2461139 and id<>'2461139' order by id asc limit 5