我想截取 ‘/AAAA/BBBBB/CCCCC’中第二个/到第三个/中的字符 mysql语句应该怎么写
https://blog.csdn.net/weixin_28049429/article/details/113908578
select SUBSTRING_INDEX( SUBSTRING_INDEX('/AAAA/BBBBB/CCCCC','/',3) ,'/',-1) from dual
参考https://www.jb51.net/article/19438.htm
substring(str,7,5)
SUBSTRING_INDEX(SUBSTRING_INDEX(str,'/',2),'/',-1)