1.MySql常用函数大全讲解 https://www.cnblogs.com/huasky/p/11190086.html
2.ideal快捷键 https://blog.csdn.net/lisa19881006/article/details/86714913
3.https://blog.csdn.net/dome_/article/details/79779002
4.https://max.book118.com/html/2019/0306/7056154103002012.shtm
5.JAVA性能优化：35个小细节让你提升java代码的运行效率 https://blog.csdn.net/chetianyao8457/article/details/100924178
原文：https://www.cnblogs.com/risirirui/p/12437176.html