postgresql数据库函数的相关内容

阿里云文档 2025-06-20

将PostgreSQL的数据同步至AnalyticDB PostgreSQL

本文介绍如何使用数据传输服务DTS（Data Transmission Service），将RDS PostgreSQL实例的数据同步至云原生数据仓库AnalyticDB PostgreSQL版实例中。

阿里云文档 2025-06-18

迁移PostgreSQL数据至SelectDB

通过DTS、阿里云DataWorks、Flink CDC和Catalog均可将PostgreSQL（如自建PostgreSQL、RDS PostgreSQL和PolarDB PostgreSQL等）的数据迁移至云数据库 SelectDB 版。您可依据迁移的数据量和业务场景，选择合适的方式完成数据迁移。

阿里云文档 2025-06-16

承诺型Serverless

承诺型Serverless是指在已购买的固定规格RDS PostgreSQL实例上（计费类型包括包年包月或按量付费）启用Serverless功能。

阿里云文档 2025-05-19

如何使用标签对集群进行分类管理

在集群数量较多的情况下，您可以创建多个标签，为集群绑定不同的标签以便进行分类。随后，您可以通过这些标签对集群进行筛选。

文章 2024-08-31 来自：开发者社区

SQL Server、MySQL、PostgreSQL：主流数据库SQL语法异同比较——深入探讨数据类型、分页查询、表创建与数据插入、函数和索引等关键语法差异，为跨数据库开发提供实用指导

SQL Server、MySQL、PostgreSQL：主流数据库SQL语法异同比较在当今的数据库管理领域，SQL Server、MySQL和PostgreSQL是三个最流行的关系型数据库管理系统。它们都使用SQL作为查询语言，但在语法和功能实现上存在差异。理解这些差异对于开发者来说是至关重要的，特别是在多数据库环境下开发和迁移应用时。本...

文章 2022-02-17 来自：开发者社区

PostgreSQL 10.1 手册_部分 IV. 客户端接口_第 33 章 libpq - C 库_33.1. 数据库连接控制函数

33.1. 数据库连接控制函数 33.1.1. 连接字符串 33.1.2. 参数关键词下列函数会建立到一个PostgreSQL后端服务器的连接。一个应用程序可以在一个时刻打开多个后端连接（原因之一就是为了访问多个数据库）。每个连接用一个PGconn对象表示，它从函数PQconnectdb、PQconnectdbParams或PQsetdbLogin得到。注意这些函数将总是返回一个非空的...

文章 2022-02-17 来自：开发者社区

PostgreSQL 10.1 手册_部分 III. 服务器管理_第 21 章数据库角色_21.6. 函数和触发器安全性

21.6. 函数和触发器安全性函数和触发器允许用户在后端服务器中插入代码，其他用户不会注意到这些代码的执行。因此，两种机制允许用户相对容易地为其他人设置“特洛伊木马”。唯一真正的保护是收紧对能定义函数的用户的控制。在后端服务器进程中运行的函数带有数据库服务器守护进程的操作系统权限。如果用于函数的编程语言允许非检查的内存访问，它就可能改变服务器的内部数据结构。因此，在很多其他事情中，这...

共有8条

< 1 >

跳转至： GO

更新时间 2024-09-02 09:13:04

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

数据库更多postgresql相关

数据库您可能感兴趣

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1nmXJn7cx_u4jSZFlXXXnUFXa-200-200.png","contentLink":"https://www.aliyun.com/product/dbaudit","title":"数据库审计","des":"满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。","link1":"https://yundun.console.aliyun.com/?p=sddp#/audit/analysis/alarm/auditFirst/cn-zhangjiakou","btn1":"产品控制台","link2":"https://common-buy.aliyun.com/?commodityCode=sddp_pre&request=%7B%22ord_time%22:%221:Month%22,%22order_num%22:1,%22region%22:%22cn-zhangjiakou%22,%22type%22:%22normal%22,%22sddp_version%22:%22version_dengbao%22,%22audit_subscription_version%22:%220%22,%22logStorage_subscription%22:%221%22,%22logStorage%22:2%7D&regionId=cn-zhangjiakou","btn2":"立即购买","btn3":"产品文档","link3":"https://help.aliyun.com/product/52432.html?spm=5176.139959.J_5253785160.5.42de77d7KNxtZZ","infoGroup":[{"infoName":"精选推荐","infoContent":{"firstContentName":"包年享85折优惠","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=sddp_pre&request=%7B%22ord_time%22:%221:Month%22,%22order_num%22:1,%22region%22:%22cn-zhangjiakou%22,%22type%22:%22normal%22,%22sddp_version%22:%22version_dengbao%22,%22audit_subscription_version%22:%220%22,%22logStorage_subscription%22:%221%22,%22logStorage%22:2%7D&regionId=cn-zhangjiakou","lastContentLink":"","lastContentName":""}},{"infoName":"用户指南","infoContent":{"firstContentName":"产品快速入门","lastContentName":"不同版本功能对比","firstContentLink":"https://help.aliyun.com/zh/dsc/data-security-center/user-guide/security-audit/","lastContentLink":"https://help.aliyun.com/zh/dsc/data-security-center/product-overview/difference-between-different-dsc-editions"}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"数据库审计","bannerContent":"满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/dbaudit?spm=5176.21213303.8115314850.1.faf453c9I9EKNe&scm=20140722.S_card@@%E5%8D%A1%E7%89%87@@1796._.ID_card@@%E5%8D%A1%E7%89%87@@1796-RL_%E6%95%B0%E6%8D%AE%E5%BA%93%E5%AE%A1%E8%AE%A1-OR_ser-V_2-P0_0","contentTitle":"满足等保2.0’安全审计‘的合规要求","homePageLink":"https://page.aliyun.com/form/act803688306/index.htm","homePageName":"7天试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"数据库审计","subtitle":"满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。","linkUrl":"https://www.aliyun.com/product/dbaudit?spm=5176.21213303.8115314850.1.faf453c9I9EKNe&scm=20140722.S_card@@%E5%8D%A1%E7%89%87@@1796._.ID_card@@%E5%8D%A1%E7%89%87@@1796-RL_%E6%95%B0%E6%8D%AE%E5%BA%93%E5%AE%A1%E8%AE%A1-OR_ser-V_2-P0_0","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1nmXJn7cx_u4jSZFlXXXnUFXa-200-200.png","contentLink":"https://www.aliyun.com/product/dbaudit","title":"数据库审计","des":"满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。","link1":"https://yundun.console.aliyun.com/?p=sddp#/audit/analysis/alarm/auditFirst/cn-zhangjiakou","btn1":"产品控制台","link2":"https://common-buy.aliyun.com/?commodityCode=sddp_pre&request=%7B%22ord_time%22:%221:Month%22,%22order_num%22:1,%22region%22:%22cn-zhangjiakou%22,%22type%22:%22normal%22,%22sddp_version%22:%22version_dengbao%22,%22audit_subscription_version%22:%220%22,%22logStorage_subscription%22:%221%22,%22logStorage%22:2%7D&regionId=cn-zhangjiakou","btn2":"立即购买","btn3":"产品文档","link3":"https://help.aliyun.com/product/52432.html?spm=5176.139959.J_5253785160.5.42de77d7KNxtZZ","infoGroup":[{"infoName":"精选推荐","infoContent":{"firstContentName":"包年享85折优惠","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=sddp_pre&request=%7B%22ord_time%22:%221:Month%22,%22order_num%22:1,%22region%22:%22cn-zhangjiakou%22,%22type%22:%22normal%22,%22sddp_version%22:%22version_dengbao%22,%22audit_subscription_version%22:%220%22,%22logStorage_subscription%22:%221%22,%22logStorage%22:2%7D&regionId=cn-zhangjiakou","lastContentLink":"","lastContentName":""}},{"infoName":"用户指南","infoContent":{"firstContentName":"产品快速入门","lastContentName":"不同版本功能对比","firstContentLink":"https://help.aliyun.com/zh/dsc/data-security-center/user-guide/security-audit/","lastContentLink":"https://help.aliyun.com/zh/dsc/data-security-center/product-overview/difference-between-different-dsc-editions"}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"数据库审计","bannerContent":"满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/dbaudit?spm=5176.21213303.8115314850.1.faf453c9I9EKNe&scm=20140722.S_card@@%E5%8D%A1%E7%89%87@@1796._.ID_card@@%E5%8D%A1%E7%89%87@@1796-RL_%E6%95%B0%E6%8D%AE%E5%BA%93%E5%AE%A1%E8%AE%A1-OR_ser-V_2-P0_0","contentTitle":"满足等保2.0’安全审计‘的合规要求","homePageLink":"https://page.aliyun.com/form/act803688306/index.htm","homePageName":"7天试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"数据库审计","subtitle":"满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。","linkUrl":"https://www.aliyun.com/product/dbaudit?spm=5176.21213303.8115314850.1.faf453c9I9EKNe&scm=20140722.S_card@@%E5%8D%A1%E7%89%87@@1796._.ID_card@@%E5%8D%A1%E7%89%87@@1796-RL_%E6%95%B0%E6%8D%AE%E5%BA%93%E5%AE%A1%E8%AE%A1-OR_ser-V_2-P0_0","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}