- 连接到数据库:
psql -U username -d dbname
- 查看数据库列表:
\l
- 查看表格列表:
\dt
- 查看表格结构:
\d table_name
- 创建数据库:
CREATE DATABASE dbname;
- 删除数据库:
DROP DATABASE dbname;
- 创建表格:
CREATE TABLE table_name (
column1 datatype,
column2 datatype,
...
);
- 删除表格:
DROP TABLE table_name;
- 插入数据:
INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...);
- 查询数据:
SELECT * FROM table_name;
- 更新数据:
UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;
- 删除数据:
DELETE FROM table_name WHERE condition;
- 导出数据:
COPY table_name TO 'file_path' DELIMITER ',' CSV HEADER;
- 导入数据:
COPY table_name FROM 'file_path' DELIMITER ',' CSV HEADER;
- 备份数据库:
pg_dump dbname > backup.sql
- 恢复数据库:
psql -d dbname -f backup.sql
- 停止数据库:
pg_ctl stop -D /path/to/data/directory
- 启动数据库:
pg_ctl start -D /path/to/data/directory
