I happen to have 2 installed instances of postgresql at my machine: 9.1 and 9.2: sudo service postgresql status 9.1/main (port 5432): down 9.2/main (port 5433): down They are located at /etc/postgresql/9.1/ and /etc/postgresql/9.2/. Then I run 9.2 by…

I am learning Npgsql and PostgreSQL. I am unable to define the output parameter correctly. What am I doing wrong? Here is the function: CREATE OR REPLACE FUNCTION Insert_Customer_WithOutputParameter( IN _FirstName character varying DEFAULT NULL::char…

1        Set max_connections to three times the number of processor cores on the server. Include virtual (hyperthreading) cores. Set shared_buffers             to 4GB for servers with up to 64 GB of RAM. Use 8GB for systems with more than 64 GB of RA…

原文 LINQ to PostgreSQL Tutorial This tutorial guides you through the process of creating a simple application powered by LinqConnect technology. In less than 5 minutes you will have a ready-to-use data access layer for your business objects. In this w…

Java 代码,在数据库端,并没有当成 prepared statetment 被处理. C代码通过libpq 访问数据库端,被当成了 prepared statement 处理.也许是因PostgreSQL对JDBC的支持毕竟是后期出现的: 下面看代码和运行结果: Java 代码: import java.sql.*; public class Test01 { public static void main(String argsv[]){ try { Class.forName("org.…

转自:https://www.percona.com/blog/2018/10/19/postgresql-building-enterprise-grade-setup-with-open-source/ Hello everyone, and thank you to those that attended our webinar on Building an Enterprise-grade PostgreSQL setup using open source tools last Wed…

Running multiple PostgreSQL 9.2 Instances on one server in CentOS 6/RHEL 6/Fedora 原帖网站速度很慢,故转帖在此 This post describes how to run multiple PostgreSQL 9.2 Instances on one server in CentOS 6/RHEL 6/Fedora flavors. I am assuming that you have a running p…

1 PL/pgSQL Under the Hood This part discusses some implementation details that are frequently important for PL/pgSQL users to know. 1.1 Variable Substitution SQL statements and expressions within a PL/pgSQL function can refer to variables and paramet…

入门 作为安装的一部分,请确保您已完成以下操作: 分叉 Postgres Operator 示例存储库并将其克隆到您的主机. https://github.com/CrunchyData/postgres-operator-examples/fork 将 PGO 安装到 postgres-operator 命名空间.如果您位于 postgres-operator-examples 目录中,则可以运行 kubectl apply -k kustomize/install 命令. 详细安装过程,请参…

postgresql数据库创建/修改/删除等写入类代码语法总结: 1,创建库 2,创建/删除表 2.1 创建表 create table myTableName 2.2 如果表不存在则创建表 create table if not exists myTableName 2.3 删除表 drop table if exists myTableName; 2.4 实例代码: drop table if exists myTableName; create table if not exists my…