mysql 无论里面的代码如何，交易都会失败

Question

我正在尝试在 mySQL 中编写交易，但无论我在标签之间放置什么，我都会出错。

start transaction;
set @email = "FOO";
PRINT @email;
commit;

这个块总是产生错误：

SQL Error [1064] [42000]: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'set @email_name = "FOO";
PRINT @email_name;
commit' at line 2
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'set @email_name = "FOO";
PRINT @email_name;
commit' at line 2

无论在事务中放置什么代码，这种行为都会发生，如果没有注意到，甚至会持续存在。

Answer 1

没有打印，请使用SELECT。

mysql 无论里面的代码如何，交易都会失败

mysql transaction fails regardless of the code inside

mysql

transactions

syntax-error