mySQL

http://dynamiclu.iteye.com/blog/1439296

http://doc.mysql.cn/mysql5/refman-5.1-zh.html-chapter/sql-syntax.html#create-table

http://doc.mysql.cn/mysql5/2012/0426/5569.html

http://seclists.org/oss-sec/2012/q2/493

http://blog.csdn.net/fax5201314/article/details/6701188

http://topic.csdn.net/u/20080105/11/f5b189c8-e308-4561-a68f-98b913a0e3b4.html

http://huxiao.iteye.com/blog/629030

http://blog.csdn.net/huyiyang2010/article/details/5677396 

http://lixjluck.iteye.com/blog/1312056

 

MB

http://wenku.baidu.com/view/036ef0ceda38376baf1fae15.html

 

Oracle

http://tntxia.iteye.com/blog/1179918

 

Oracle InStr

http://blog.163.com/liu_yang1234/blog/static/2447431020112290109559/