嵌套

 MySQL employed the mechanism of nested transactions to provide the "all or nothing" guarantee for SQL statements that the standard requires. MySQL would create a nested transaction at the start of each SQL statement, and destroy (commit or abort) the nested transaction at statement end. MySQL people internally called such a nested transaction a "statement transaction". And that's what gave birth to the term "statement transaction".nested

posted @ 2020-04-26 01:28  papering  阅读(170)  评论(0编辑  收藏  举报