mvpbang

摘要： 流程控制是面向过程的编程思想，是对问题的解决步骤的代码化！ 号外：mysql的内连接删除 delete a from table_aaa as a inner join table_bb as b set a.djxh=b.djxh; \ 跳脱字符，接触特殊字符的含义，原样输出字符 escape | 阅读全文