MySQL是否允许使用嵌套事务?
Answers:
InnoDB
支持SAVEPOINTS
。
您可以执行以下操作:
CREATE TABLE t_test (id INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
START TRANSACTION;
INSERT
INTO t_test
VALUES (1);
SELECT *
FROM t_test;
id
---
1
SAVEPOINT tran2;
INSERT
INTO t_test
VALUES (2);
SELECT *
FROM t_test;
id
---
1
2
ROLLBACK TO tran2;
SELECT *
FROM t_test;
id
---
1
ROLLBACK;
SELECT *
FROM t_test;
id
---
从MySQL文档中:
事务不能嵌套。这是您发出START TRANSACTION语句或其同义词之一时对任何当前事务执行的隐式提交的结果。 https://dev.mysql.com/doc/refman/5.7/zh-CN/implicit-commit.html