could not execute statement; SQL [n/a]; constraint [null] (多对多表报错不能执行SQL语句)
多表删除报错: org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [ ...
多表删除报错: org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [ ...
1....springBoot运行报错: ycom.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'fl ...
1.....查看端口号被谁(进程)占用 ----》win + R 键配合打开 dos 命令输入窗口 ----》键入命令:netstat -ano | findstr "端口号" ...