求高手指点,初学vc++和数据库SQL server 编程
void CPatents::sql_insert()
{
//连接数据库
ADOConn m_AdoConn;
m_AdoConn.OnInitADOConn();
//设置INSERT语句
_bstr_t vSQL;
vSQL = "INSERT INTO patent(patentno,classificationno,openyear,patenttype,"
"lawstatus,problem,solution,paratoimproveno,"
"paratoimprove,paratoworsenno,paratoworsen,principleno,"
"principle,patentID) VALUES('"
+ patentno + "','" + classificationno + "','" + openyear + "','" + patenttype + "','"+ lawstatus + "','" + problem + "','" + solution+ "','" + paratoimproveno + "','" + paratoimprove + "','" + paratoworsenno + "','"
+ paratoworsen + "','" + principleno + "','" + principle + "','" + patentID + "')";
//执行INSERT语句
m_AdoConn.ExecuteSQL(vSQL);
//断开与数据库的连接
m_AdoConn.ExitConnect();
}
vc出现的错误是C:\Program Files\Microsoft Visual Studio\MyProjects\TRIZ PLATFORM20130725\Patents.cpp(78) : error C2666: '+' : 4 overloads have similar conversions
看了很久,没看出来,问题到底出在哪了。。。
求高手指点,万分感谢!!