Are nested transactions allowed in MySQL?

问题

Does MySQL allow the use of nested transactions?

回答1:

InnoDB supports SAVEPOINTS.

You can do the following:

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
---

回答2:

From MySQL documentation:

Transactions cannot be nested. This is a consequence of the implicit commit performed for any current transaction when you issue a START TRANSACTION statement or one of its synonyms. https://dev.mysql.com/doc/refman/5.7/en/implicit-commit.html

来源：https://stackoverflow.com/questions/1306869/are-nested-transactions-allowed-in-mysql