python-oceanbase-driver
Python 的 OceanBase 驱动，基于 PyMySQL 1.2.0，纯 Python，用法与 PyMySQL 完全一致，
区别是默认置上握手包 capability bit27，可直连 OceanBase Oracle 租户。
未打补丁的 MySQL 协议驱动连 Oracle 租户会被服务端拒绝：
pyoceanbase.err.NotSupportedError: (1235, 'Oracle tenant for current client driver is not supported')
原理：OceanBase 登录时检查该位（OB_CLIENT_SUPPORT_ORACLE_MODE，
与 MySQL 8.0 的 CLIENT_QUERY_ATTRIBUTES 同一位），mysql 8.0 客户端默认置位，
PyMySQL 默认没置。本驱动默认置上，对 MySQL / MariaDB / OB MySQL 租户无副作用。
安装
pip install pyoceanbase
注意：顶层包名为 pyoceanbase，可与上游 PyMySQL 共存于同一环境，按需选用。
用法
import pyoceanbase
conn = pyoceanbase.connect(
host="HOST",
port=9090,
user="USER@TENANT#CLUSTER",
password="PASSWORD",
database="DBNAME",
)
with conn.cursor() as cur:
cur.execute("SELECT USER FROM DUAL")
print(cur.fetchone())
conn.close()
注意事项
- 业务 SQL 须用 Oracle 方言（如
FROM DUAL、SYSDATE）。 - 默认
autocommit=False，写入后记得conn.commit()（标准 PyMySQL 行为）。 - 数字类型默认返回
Decimal（标准 PyMySQL 行为），可用conv覆盖。 - DSN 参数等细节见上游文档：https://github.com/PyMySQL/PyMySQL
协议
MIT，与上游一致。
1 maintainer
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