A. Cutting Banner time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A large banner with word CODEFORCES was ordered for the 1000-th onsite round of Codeforcesω that takes place on the Mi…
常用的字符串聚合(拼接)函数介绍 1.WMSYS.WM_CONCAT 从oracle 10G开始支持,使用案例如下: select deptno,wmsys.wm_concat(ename) from emp group by deptno; 若想将字符之间的分隔符换成其他标点,可添加一个replace函数 select deptno,replace(wmsys.wm_concat(ename),',','.') from emp group by deptno; 2.LISTAGG…
A. Cutting Banner Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/538/problem/A Description A large banner with word CODEFORCES was ordered for the 1000-th onsite round of Codeforcesω that takes place on the Miami beach. Un…
开发中,经常进行模糊查询或者进行截取字符串进行模糊匹配,常用的就是substr函数或者substring函数. 使用语法: substr(string A, int start),substring(string A, int start) 两者用法一样,两个参数 返回值: string 说明:返回字符串A从start位置到结尾的字符串 举例: hive> select substr('abcde',3) fromlxw_dual;…