Otter工作原理 原理描述: 基于Canal开源产品,获取数据库增量日志数据。典型管理系统架构,manager(web管理)+node(工作节点) a. manager运行时推送同步配置到node节点 b. node节点将同步状态反馈到manager上基于zookeeper,解决分布式状态调度的,允许多node节点之间协同工作…
问题场景:
今天启动项目的时候突然遇到这个错误导致无法启动
Information:2019/8/26 11:34 - Compilation completed with 1 error and 0 warnings in 6 s 52 ms
Error:Cannot build artifact aws_multi_branch_1.0.0:war exploded because it is included into a…
dependency walker工具 简介使用 简介
官方概述:
Dependency Walker is a free utility that scans any 32-bit or 64-bit Windows module (exe, dll, ocx, sys, etc.) and builds a hierarchical tree diagram of all dependent modules. For each module found, …
一: 先创建两个表 二: 使用【left join】 union 【right join】
select t1.dim_a, t1.qty qty_a, t2.dim_a dim_b, t2.qty qty_b from ta t1 left join tb t2 on t1.dim_at2.dim_a
union
select t1.dim_a, t1.qty qty_a, t2.dim_a dim_b, t2.qty qty_b from ta t1 right join…