fkjj.net
当前位置:首页 >> DB2数据库支持随机取记录吗 >>

DB2数据库支持随机取记录吗

使用 order by rahnd() fetch firdt 100 rows only 1、在表中随机 抽取 100条记录 select * from A order by rahnd() fetch firdt 100 rows only 2、分地市和套餐 select * from A where a.地市 = ‘XX’and a.套餐 = 'XX' order by rahnd() fetch...

select * from tablename order by rand() fetch first n rows only;

这个拿你的标题百度一下的答案。。。。。 SELECT INT(RAND()*100) FROM SYSIBM.SYSDUMMY1

c语言中产生随机数的相关函数主要包括srand和rand函数,两者配合生成随机数据,测试代码如下, #include #include #include void main() { int i=0,j=0; int p[5][5]={0}; srand(time(NULL)); for(i=0;i

代码如下: select * from tbl_DPImg where ID in (select min(ID) from tbl_DPImg group by DPID)处理后结果为: 查找表中多余的重复记录,重复记录是根据单个字段(teamId)来判断 select * from team where teamId in (select teamId from tea...

rand()函数可以返回一个介于0和1之间的浮点数,举个例子,比如要获得1到100之间的随机数: SELECT INT(RAND()*100) FROM SYSIBM.DUAL

网站首页 | 网站地图
All rights reserved Powered by www.fkjj.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com