摘要：
记录一个java操作mysql数据库出现死锁问题； nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get loc 阅读全文
posted @ 2021-09-26 15:34
*乐途*
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Failed to add the foreign key constraint. Missing index for constraint 'stu_ibfk_1' in the reference
摘要：
alter table stu add foreign key(cno) references user(id);Failed to add the foreign key constraint. Missing index for constraint 'stu_ibfk_1' in the re 阅读全文
posted @ 2021-09-26 13:22
*乐途*
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