1.mybatis xml中特殊字符处理

https://blog.csdn.net/hbtj_1216/article/details/51763173

2.oracle11g 拆分字符串的详细技巧

https://blog.csdn.net/mchdba/article/details/51946573

http://blog.itpub.net/23368118/viewspace-1074252/

--10g分割函数
SELECT REGEXP_SUBSTR (‘abc1,cbd2,db3,db5‘, ‘[^,]+‘, 1,rownum)

FROM DUAL

CONNECT BY ROWNUM <=

LENGTH (‘abc1,cbd2,db3,db5‘) - LENGTH (REPLACE (‘abc1,cbd2,db3,db5‘, ‘,‘, ‘‘))+1;

3.ORACLE如何查询字符串的真正长度

https://zhidao.baidu.com/question/327791172156811005.html

select  length(‘abcdefgh‘) from dual;

4Oracle中如何截取字符串的

https://zhidao.baidu.com/question/155090484.html

https://blog.csdn.net/housonglin1213/article/details/50344895