https://blog.csdn.net/m0_50370837/article/details/124239171?ops_request_misc=&request_id=&biz_id=102&utm_term=mysql%20IN%20%E5%92%8CEXISTS%20%E7%9A%84%E5%8C%BA%E5%88%AB&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-0-124239171.142^v94^insert_down1&spm=1018.2226.3001.4187
标签：exists,区别,E5%,request,blog,MySQL,id From： https://www.cnblogs.com/beatle-go/p/17705903.html