convert(varchar(10),字段名,转换格式) 比如:1.select user_id,convert(varchar(10),dayts,11) as dates from tb_user (sybase下及sql server下语句) 2.select to_char(sysdate,'yy/mm/dd') as d from dual (oracle下语句) 转换格式:0或100 month dd yyyy hh:miampm1 mm/dd/yy2 yy.mm.dd
题目如下: A long-distance telephone company charges its customers by the following rules: Making a long-distance call costs a certain amount per minute, depending on the time of day when the call is made. When a customer starts connecting a long-distance
使用STL库sort函数对vector进行排序,vector的内容为对象的指针,而不是对象. 代码如下 #include <stdio.h> #include <vector> #include <algorithm> using namespace std; class Elm { public: int m_iSortProof; private: int __m_iValue; static int __m_iCnt; public: Elm(); int get