oraclesql问题

oracle的sql优化问题

数据库为oracle，若干张表关联，要查询每页10条的分页数据 sql如下：select*from(select t.*,rownum rn from(select*from V_MANAGE_NORMAL_WOMAN Wleft join MARRIAGE_INFO M on(W.ID=M.WOMAN_ID)LEFT JOIN MAN N on(M.MAN_ID=N.ID)left ...

请教PostgreSQL与ORACLE兼容的问题，递归查询sql

Oracle的sql：select t.org_id,t.org_name,t.org_level,connect_by_root(org_id)org_up_id,connect_by_root(org_name)org_up_name,connect_by_root(org_level)org_level,connect_by_isleaf leaffrom dm_org tconnect by prior t.org_id=...

关于Oracle数据库中SQL空值排序的问题

在Oracle中进行查询排序时，如果排序字段里面有空值的情况下，排序结果可能会达不到自己想要的结果。如 select*from tableTest order by VISITS desc 上图可以看到表示服务访问次数的“VISITS”字段上的空值记录排序时放在前面，和实际逻辑...

Oracle配置OneMap中的sql数据库问题及解决方案

报错ORA-00900：无效SQL语句，点确定后报错：ORA-00942：表或视图不存在分析：prompt在Oracle中是打印功能，如果要在PLsql中执行带有prompt的sql文件就会报上面的错误，在网上查过说是DBA权限执行了这个sql,要用NORMAL才行，但终归失败。...

我们原来用 oracle 的sqlloader。在postgres。应该改用pgloader 还是改用copy 命令呢...

我们原来用 oracle 的sqlloader。在postgres。应该改用pgloader 还是改用copy 命令呢。同事研究pgloader 一周没结果本问题来自云栖社区【PostgreSQL技术进阶社群】。https://yq.aliyun.com/articles/690084 点击链接欢迎加入社区大社群。

JFinal使用Oracle数据库时，SQL参数绑定失效的奇怪问题?报错

JFinal JFinal 2.2 使用Oracle数据库时，非web应用，SQL参数绑定没有生效，将sql中的参数换成实际数值，可以返回正确结果，这是什么问题？配置：Druid 最新版，ojdbc6驱动 dsOracle=new DruidPlugin(PropKit.get("oraJdbcUrl"),PropKit.get...

oracle 12c 数据库上编写SQL语句时卡顿的问题解决

开了个公众号：医信系统性能优化，主要写一些日常工作中性能优化方面的各种案例，包括SQL优化，数据结构设计优化，Oracle系统性能优化。主要面向编写SQL及相关脚本的开发人员和技术支持人员，分享一些性能优化的经验。对性能优化的技术学习...

SSH框架sqlServer数据库更换为oracle数据库问题?报错

环境:Spring3 SpringMvc Hiberate4 SqlServer2005 Oracle11g 现在要把sqlServer数据库换成oracle数据库，更改数据库配置后，项目可以正常启动但是只要执行sql语句就会报错。网上说是数据库配置错误，但是我使用同样的配置通过JDBC执行同样...

为什么用 PostgreSQL 绑定变量没有 Oracle pin S 等待问题

早上看到盖国强老师在朋友圈里分享了一篇关于软解析带来的Pin S等待的问题。有感而发，跟大家聊一聊为什么PostgreSQL不存在这个问题。...如果你原来是Oracle的用户，开发人员再也不用为pin S的问题妥协，放心大胆的用同一条SQL，随便绑。

成功解决连接SQL输出出现中文乱码问题(10001,'oracle¿ìËÙÈëÃÅ','Íõº£ÁÁ...

解决问题解决连接SQL出现中文乱码问题(10001,'oracle¿ìËÙÈëÃÅ','Íõº£ÁÁ','Ë®Àû³ö°æÉç','2003.1.12','·ñ','·ñ'),(10002,解决思路中文乱码，很可能是编码格式出了问题解决方法将connect函数的charset变量utf8改...

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云数据库RDS SQL Server版

云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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