Are nested transactions allowed in MySQL?
-
15-04-2021 - |
Question
Does MySQL allow the use of nested transactions?
Solution
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
---
OTHER TIPS
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
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