DROPDATABASE IFEXISTSold_database; 6. 总结 在PostgreSQL 中使用DROP DATABASE命令可以有效地删除不再需要的数据库及其所有内容。了解命令的基本语法、使用方法和注意事项可以帮助确保操作的正确性和数据的安全。在执行删除操作之前,务必进行数据备份、检查活动连接,并确保具备足够的权限。本文详细介绍了DROP DATABASE命...
在PostgreSQL 中,DROP DATABASE是一个重要的 SQL 命令,用于删除数据库及其所有内容。这个操作不可逆,一旦执行,数据库中的所有表、数据、索引和其他对象都会被永久删除。本文将详细介绍如何在 PostgreSQL 中使用DROP DATABASE,包括基本语法、使用方法、注意事项以及实际应用场景。 1. 基本概念 1.1DROP DATABASE命令 DROP...
我正试图删除我当前连接的数据库,但出现此错误: pq: cannot drop the currently open database 我真的不明白如果我必须关闭我的连接我应该如何删除数据库,因为那样我不认为我将能够使用 dbConn.Exec 来执行我的 DROP DATABASE 语句? dbConn *sql.DB func stuff() error { _, err := dbConn.Exec(fmt.Sp...
select datname,pg_size_pretty(pg_database_size(datname)) from pg_database; drop schema denali_cn_17q1_20170817_eql cascade; select pg_size_pretty(pg_database_size('content_unidb')); select * from information_schema.schemata where schema like 'denali_vde%'; select pg_size_pretty(pg_dat...
create database testdb; 1. 删除数据库 postgres=# drop database testdb; DROP DATABASE postgres=# 1. 2. 3. 4. 创建表 创建表之前要连接指定的数据库 \c test; CREATE TABLE table_name( column1 datatype, column2 datatype, column3 datatype, ...
If the constraint in Oracle is not deferrable, it will need to be dropped and re-created as deferrable, though it is sometimes possible to alter the constraint without having to drop it. Note: to avoid potential errors or bad data, place the commands for dropping and re...
Initializing database ... OK [zxd@localhost ~]$ sudo systemctl enable postgresql-14 Created symlink from /etc/systemd/system/multi-user.target.wants/postgresql-14.service to /usr/lib/systemd/system/postgresql-14.service. [zxd@localhost ~]$ sudo systemctl start postgresql-14 ...
postgres=# drop database otmstest; ERROR: database "otmstest" is being accessed by other users DETAIL: There are 9 other sessions using the database. postgres=# SELECT postgres-# pg_terminate_backend(pid) postgres-# FROM postgres-# pg_stat_activity ...
configure(bind=engine, autoflush=False, expire_on_commit=False) Base.metadata.drop_all(engine) Base.metadata.create_all(engine) DBSession.flush() DBSession.commit() except Exception as e: error = traceback.format_exc() Multiprocess_loaddata_toDatabase.log.logger.error(error) finally: DB...
The main database has been dropped successfully. However, the replica failed. I tried to drop the database using a SQL client (dbeaver) afterwards and I see the problem is that there is an active subscription. The problem is that I cannot drop that subscription. With drop subscription sub...