数据死循环

逐行处理数据时避免死循环

当SELECT语句改变变量值失败时，可能导致死循环 请看下列表、样例数据和存储过程：CREATE TABLE[data].[Orders]([OrderID][int]NOT NULL,[OrderDate][datetime]NOT NULL,IsProcessed CHAR(1)NOT NULL,CONSTRAINT[PK_Orders]PRIMARY KEY ...

multi-master-多主-多写-如何在多写中避免数据复制打环(死循环)

标签 PostgreSQL,打环背景双写或者多写，除了需要考虑数据冲突的问题，另一个要考虑的就是打环的问题。为什么会打环呢？DB A<->DB B 1、A insert into tbl values(1,'test');产生redo 同步到B 2、B 接收到同步内容 insert into tbl ...

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数据集成

数据集成（Data Integration）是阿里集团对外提供的可跨异构数据存储系统的、可靠、安全、低成本、可弹性扩展的数据同步平台，为400+对数据源提供不同网络环境下的全量/增量数据进出通道。

产品入门

产品动态

最佳实践