MFC中 SQL语句格式的的问题

Question

（1）下面是程序中的ＳＱＬ语句：
mSqlStr = "INSERT INTO BORROW (READER_ID, BOOK_ID, BORROW_DATE, B_CLERK_ID) VALUES('";
// mSqlStr = "INSERT INTO BORROW (READER_ID, BOOK_ID, B_CLERK_ID) VALUES('";
mSqlStr = mSqlStr + m_strReaderID;
mSqlStr = mSqlStr + "','";
mSqlStr = mSqlStr + m_strBookID;
mSqlStr = mSqlStr + "','";
mSqlStr = mSqlStr + "', m_BORROW_DATE,'"; //获取系统时间SYSDATE
mSqlStr = mSqlStr + "','";
mSqlStr = mSqlStr + m_strUserID;
mSqlStr = mSqlStr + "')";

（2）下面是数据库中对应表的结构：

（3）下面是程序运行时编译器的错误提示：
![图片说明](https://img-ask.csdn.net/upload/201507/04/1435978126_183775.png)

（4）谢谢大家了，帮帮忙吧，我是初学者，MFC里面SQL语句搞复杂了就看不懂，简单的还是懂，一复杂看起来就眼睛花了

Answer 1

 mSqlStr = mSqlStr + "','";
mSqlStr = mSqlStr + "', m_BORROW_DATE,'"; //获取系统时间SYSDATE
mSqlStr = mSqlStr + "','";

这几行多了单引号，上面拼接出来是"','',m_BORROW_DATE'','";这个格式不对，有两个单引号，而且m_BORROW_DATE成字符串了，不是变量
改成
 mSqlStr = mSqlStr + "','";
mSqlStr = mSqlStr +  m_BORROW_DATE; //获取系统时间SYSDATE
mSqlStr = mSqlStr + "','";