调用start transaction;后没有真正开始事务

 

 

窗口a	窗口b
SELECT * FROM information_schema.INNODB_TRX; Empty set (0.00 sec)
	start transaction; (begin;)
SELECT * FROM information_schema.INNODB_TRX; Empty set (0.00 sec)
	select * from tpa;
SELECT * FROM information_schema.INNODB_TRX \G (有数据!!)
	rollback; (commit;)
SELECT * FROM information_schema.INNODB_TRX; Empty set (0.00 sec)