select * from tabs --当前用户下的所有表select * from dual --伪表select * from (select * from fduser order by dbms_random.value) where rownum=1; -- 随机查询一条...
分类:
数据库 时间:
2014-08-19 12:23:44
阅读次数:
157
select primary_count as primaryCount, primary_score as primaryScore, junior_count as juniorCount, junior_score as juniorScore, ...
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数据库 时间:
2014-07-09 17:20:20
阅读次数:
268
1.select * from (select * from tablename order by
dbms_random.value) where rownum<
N;注:dbms_random是一个可以生成随机数值或者字符串的程序包。value()是最常用的,value()的用法一般有两个种,第...
分类:
数据库 时间:
2014-05-23 07:12:52
阅读次数:
364