zoukankan      html  css  js  c++  java
  • 037.PGSQL-事务 savepoint 保存点、rollback to 回滚

    事务

    savepoint 保存点

    rollback to 回滚

    开启一个事务需要将SQL命令用BEGINCOMMIT命令包围起来

    BEGIN;
    UPDATE accounts SET balance = balance - 100.00
        WHERE name = 'Alice';
    SAVEPOINT my_savepoint;
    UPDATE accounts SET balance = balance + 100.00
        WHERE name = 'Bob';
    -- oops ... forget that and use Wally's account
    ROLLBACK TO my_savepoint;
    UPDATE accounts SET balance = balance + 100.00
        WHERE name = 'Wally';
    COMMIT;
  • 相关阅读:
    linux-命令
    linux-命令-cd,ls
    linux-命令-概述
    linux-文件
    IOPS和带宽
    随记
    CAP,Base原理
    DateUtil
    JDK SPI
    001-进程 和 线程
  • 原文地址:https://www.cnblogs.com/star521/p/15067525.html
Copyright © 2011-2022 走看看