当前位置:网站首页>Oracle迁移到瀚高之后,空值问题处理
Oracle迁移到瀚高之后,空值问题处理
2022-08-04 01:58:00 【瀚高PG实验室】
瀚高数据库
目录
环境
文档用途
详细信息
环境
系统平台:Linux x86-64 Red Hat Enterprise Linux 7
版本:4.5
文档用途
本文档用来说明Oracle迁移到瀚高之后,对于Oracle和瀚高DB之间对于空值的差异性的处理方案。
详细信息
oracle迁移之后,空值问题处理:
1、两种数据库之间的差异:在oracle中空值和null值都是null值,在瀚高数据库中空值时’',null值是null值,是不一样的。
2、空值查询的两种情况:id = ‘’ 和 null值查询: id is null
3、关于迁移:oracle全是null值,迁移到瀚高之后也都是null值。
4、关于之后插入的空值,瀚高jdbc有个参数 strToNull:可以将 “” 转换成 null 对象存储:
url例如:jdbc.url=jdbc:highgo://192.168.10.222:5866/oracle?strToNull = true
边栏推荐
- nodejs 安装多版本 版本切换
- HBuilderX的下载安装和创建/运行项目
- 计算首屏时间
- Example 039: Inserting elements into an ordered list
- FeatureNotFound( bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested:
- 5. Scrapy middleware & distributed crawler
- Installation and configuration of nodejs+npm
- 2022 中国算力大会发布“创新先锋”优秀成果
- 一个注解替换synchronized关键字:分布式场景下实现方法加锁
- 持续投入商品研发,叮咚买菜赢在了供应链投入上
猜你喜欢
Web APIs BOM - operating browser: swiper plug-in
Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.
Flink jdbc connector 源码改造sink之 clickhouse多节点轮询写与性能分析
小甲鱼汇编笔记
贪吃蛇游戏Bug解析及功能扩展
halcon自定义函数基本操作
Installation and configuration of nodejs+npm
通用的测试用例编写大全(登录测试/web测试等)
Continuing to invest in product research and development, Dingdong Maicai wins in supply chain investment
Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.
随机推荐
Is there any jdbc link to Youxuan database documentation and examples?
Small Turtle Compilation Notes
Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.
实例039:有序列表插入元素
FeatureNotFound( bs4.FeatureNotFound: Couldn‘t find a tree builder with the features you requested:
云开发校园微社区微信小程序源码/二手交易/兼职交友微信小程序开源源码
Quickly build a website with static files
Deng Qinglin, Alibaba Cloud Technical Expert: Best Practices for Disaster Recovery across Availability Zones and Multiple Lives in Different Locations on the Cloud
持续投入商品研发,叮咚买菜赢在了供应链投入上
KunlunBase 1.0 is released!
Continuing to pour money into commodities research and development, the ding-dong buy vegetables in win into the supply chain
Continuing to invest in product research and development, Dingdong Maicai wins in supply chain investment
阿里云技术专家邓青琳:云上跨可用区容灾和异地多活最佳实践
浏览器存储
2022年T电梯修理考题及答案
Continuing to invest in product research and development, Dingdong Maicai wins in supply chain investment
2022 中国算力大会发布“创新先锋”优秀成果
Example 041: Methods and variables of a class
【QT小记】QT中信号和槽的基本使用
实例038:矩阵对角线之和