在PostgreSQL 中,可以在postgres 默认数据库中创建别的数据库,但不能直接在 postgres 默认数据库中创建其他数据库的表,因为 PostgreSQL 的架构将每个数据库的表和数据严格隔离。每个数据库有自己的系统 каталоги(如 pg_class、pg_attribute)和数据文件,存储在各自的表空间中(通常是 PGDATA/base/<数据库OID>/)。因此,表只能在当前连接的数据库...
Postgres Extensions: Use PG_MODULE_MAGIC_EXT David Wheeler 2025-05-29 Tip: Put your Rails app on a SQL Query diet Andrew Atkinson 2025-05-29 Don't mock the database: Data fixtures are parallel safe, and plenty fast Brandur Leach 2025-05-29 Advanced Patch Feedback Session (APFS) ...
浏览器右上角查看导航按钮>>> pg_stat_database视图
For high availability Postgres, use EDB’s Postgres monitoring tools to track key performance metrics related to the health of your database.
select pg_database.datname, pg_size_pretty (pg_database_size(pg_database.datname)) AS size from pg_database; 1. 2. 查看pg某个数据库中表占用的大小 先选中某个数据库 SELECT table_name, pg_size_pretty(table_size) AS table_size, ...
Monitoring and management solution for database administrators ora2pgPRO Oracle packages support and other functions for simpler migration Up to 6 times Reduced CAPEX and OPEX compared to other databases Versatility The largest companies from public financial, e-commerce, oil & gas and other sectors ...
3. ora2pg Ora2Pg is a tool for migrating your Oracle or MySQL databases to PostgreSQL-compatible schemas. It connects to your Oracle database, scans it automatically, and extracts its structure or data, generating SQL scripts ready for your PostgreSQL database. Whether you’re reverse engineeri...
docker run --rm -v ./pg-data:/var/lib/postgresql/data -e POSTGRES_PASSWORD=password postgres:16 1. 执行后,你会看到很多有趣的输出内容,比如selecting dynamic shared memory implementation ... posix和performing post-bootstrap initialization ... ok,最终日志显示LOG: database system is ready to acc...
database 每个PG服务可以包含多个独立的database。 schema 如果把databases比作一个国家,那么schema就是一些独立的省。大多数对象是隶属于某个schema的,然后schema又隶属于某个databases。在创建一个新的database时,PG会自动为其创建一个名为public的schema。如果未设置searc_path变量,那么PG会将你创建的所有对象默认放...
#撤回在pg_catalog模式下的权限 revoke select on all tables in schema pg_catalog from 用户名; #撤回对数据库的操作权限 revoke all on database 数据库名 from 用户名; #删除用户 drop user 用户名; 更多关于大数据 PostgreSQL 系列的学习文章,请参阅:PostgreSQL 数据库,本系列持续更新中。