一、事务特性二、隔离级别 一、事务特性 二、隔离级别幻读的理解：https://www.cnblogs.com/boboooo/p/12370770.html 为什么选 read commit：https://blog.csdn.net/dingxie1963/article/details/101259946?utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-0.pc_relevant_paycolumn_v3&spm=1001.2101.3001.4242.1&utm_relevant_index=3
