Portability – PostgreSQL is written in ANSI C and supports different flavors of operating systems such as Windows, Linux, macOS, and all other major UNIX platforms. Reliability – PostgreSQL is ACID-compliant and supports transactions and savepoints. It uses the concept of write-ahead logging (WA...
在数据库集群中,有3个配置文件,分别是:postgresql.conf,pg_hba.conf和pg_ident.conf。其中postgresql.conf为服务器主要的配置文件,pg_hba.conf是客户端认证配置文件,pg_ident.conf用来配置哪些操作系统用户可以映射为数据库用户。 连接与认证 参考文章: 资源消耗 服务器的运行会消耗一定的资源,通过设置服务器的参数,...
One of the most powerful features of PostgreSQL is its support for user-defined functions written in various programming languages, including pure SQL, C, Perl, Python, and PHP. Perhaps the most common programming language for PostgreSQL functions, however, is PL/pgSQL (don't ask me to pronou...
This is a mapping file, which I used to map the PostgreSQL function with the corresponding C function. Whenever you call the SQL function then the corresponding C function is called. The name of the file must be [EXTENSION NAME]–[default-version].sql. This is the same default_version as...
you can write a simple application that verifies whether a connection to postgresql is encrypted. this example demonstrates such an application written in c that uses the libpq client library, which is provided by the libpq-devel package: copy to...
本文就如何利用火山引擎云数据库 PostgreSQL 版和大语言模型技术(Large Language Model,简称 LLM),实现企业级智能交互式问答系统进行介绍。 背景 在大数据的浪潮下,众多企业建立了自己的知识库,以便于信息检索和知识查询。然而,随着知识库内容的膨胀,传统的信息检索方式变得低效,经常出现费时费力且结果不尽人意的情况。
Psycopg2is a fairly mature driver for interacting with PostgreSQL from the Python scripting language. It is written in C and provides to efficiently perform the full range of SQL operations against Postgres databases. This page deals with the 2nd version of the driver, not much olderpsycopgdriver...
PostgreSQL, commonly known as Postgres, is an open-source and object-relational database management system. It was written in C language and developed by a team of volunteering developers.PostgreSQL didn’t support SQL until 1994 and initially required QUEL to query data from it, making it less...
Fixed IP cannot be written in listen_address. Replication_timeout is detection time for the replication cuts it, and wal_receiver_status_interval is an interval when HS tries connecting to PRI. To shorten detection, you should set this value to small. ...
Makefile.global.in Integration of pgbackupapi 2年前 Makefile.in Bump repmgr version 5.5.0 7个月前 PACKAGES.md Add further documentation files 8年前 README.md doc: update README 4个月前 TODO.md doc: update GitHub links to new location ...