null值与任意值比较时都为fasle
not in 、"!"、"not like"条件过滤都会过滤掉null值的数据
SELECT * from temp; SELECT * from temp where score not in (70); 返回null解决方法:
SELECT * from temp where score not in (70) or score is null;SELECT…
最近在做旧工程的升级,原来的Gradle版本是4.6的,需要升级到7.6,JDK从8升级到17,一路淌了很多坑,逐个记录下吧
1、Maven仓库需要升级到https
你会遇到这个报错 Using insecure protocols with repositories, without …