随笔分类 -  SQL

摘要:输出结果: numOfTotal numOfMale numOfFemale percentOfMale perscentOfFemale18 14 4 0.777777777777 0.222222222222 参考:http://blog.csdn.net/guoxingege/article/ 阅读全文
posted @ 2017-07-07 16:08 翱翔的孤鹰