mysql not in() 找不到null status n in ('100','200','300','500') 换成 status in ('400') is not true
来源：https://blog.csdn.net/qq_35387940/article/details/127959272?spm=1001.2101.3001.6650.17&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7ERate-17-127959272-blog-120019885.235%5Ev43%5Epc_blog_bottom_relevance_base1&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7ERate-17-127959272-blog-120019885.235%5Ev43%5Epc_blog_bottom_relevance_base1&utm_relevant_index=24
标签：relevant,17,127959272,utm,blog,MySql,返回值,null From： https://www.cnblogs.com/lanliying/p/18230286