Summary: in this tutorial, you will learn how to call PostgreSQL stored procedures from a Python program. This tutorial picks up from where the Call PostgreSQL Functions Tutorial left off. Steps for calling a PostgreSQL stored procedure in Python To call a PostgreSQL stored procedure in a Python...
Summary: in this tutorial, you will learn how to call PostgreSQL functions from a Python program. This tutorial picks up from where the Transaction Tutorial left off. Calling a PostgreSQL function in Python To call a PostgreSQL function from a Python program, you use the following steps: First...
importpsycopg2# 创建连接conn=psycopg2.connect(host="localhost",port=5432,database="mydb",user="myuser",password="mypassword")# 创建游标cur=conn.cursor()# 调用存储过程cur.callproc("my_stored_procedure",(param1,param2))# 获取存储过程的输出参数output_param=cur.fetchone()[0]# 关闭游标和连接c...
调用存储过程:使用游标对象的execute()方法执行存储过程的调用语句。可以使用PL/pgSQL语言编写存储过程。 代码语言:txt 复制 cur.execute("CALL your_stored_procedure()") 获取结果:如果存储过程返回结果集,可以使用游标对象的fetchall()方法获取所有结果行。
我更新了“contextlib 实用工具”,涵盖了自 Python 3.6 以来添加到contextlib模块的一些功能,以及 Python 3.10 中引入的新的带括号的上下文管理器语法。 让我们从强大的with语句开始。 上下文管理器和 with 块 上下文管理器对象存在以控制with语句,就像迭代器存在以控制for语句一样。
由于PyGreSQL是基于PostgreSQL的客户端接口,它的功能GaussDB(DWS)并不能完全支持。具体支持情况请见下表。 说明: 以下接口支持情况是基于Python 3.8.5及PyGreSQL 5.2.4版本。 表1 DWS对PyGreSQL主要接口支持情况 PyGreSQL 备注 Module functions and constants connect – Open a PostgreSQL connection Y - get_pqli...
For traditional database demands, there are Python interfaces to all commonly used relational database systems—Sybase, Oracle, Informix, ODBC, MySQL, PostgreSQL, SQLite, and more. The Python world has also defined a portable database API for accessing SQL database systems from Python scripts, wh...
存储过程调用当前数据API不支持直接创建存储过程,但是可以执行MySQL、Oracle、PostgreSQL这三种数据源的存储过程,以Oracle数据库为例说明。 数据源说明 假设数据库里面有一张表,表结构如下建表语句所示: create table sp_test(id number 来自:帮助中心 查看更多 → ...
pg8000's name comes from the belief that it is probably about the 8000th PostgreSQL interface for Python. pg8000 is distributed under the BSD 3-clause license.All bug reports, feature requests and contributions are welcome at http://github.com/tlocke/pg8000/....
pg8000's name comes from the belief that it is probably about the 8000th PostgreSQL interface for Python. pg8000 is distributed under the BSD 3-clause license.All bug reports, feature requests and contributions are welcome at http://github.com/tlocke/pg8000/....