【问题标题】:Is there a way to select schema in python hdbcli dbapi?有没有办法在 python hdbcli dbapi 中选择模式?
【发布时间】:2020-09-17 06:29:56
【问题描述】:
根据documentation,连接HANA数据库需要的参数是主机、端口、用户和密码。
from hdbcli import dbapi
conn = dbapi.connect(
address="<hostname>",
port=3<NN>MM,
user="<username>",
password="<password>"
)
cursor = conn.cursor()
这默认选择用户名作为架构。有没有办法指定架构名称?
【问题讨论】:
标签:
python
hana
python-db-api
【解决方案1】:
AFAIK 没有允许设置/切换到特定架构的连接属性。
但是,您可以轻松地在创建连接后立即切换到您想要的架构:
conn = dbapi.connect(
address = 'hxehost',
port = '39013', # connecting to the HANA system, not the DB directly
user = '...',
password = '...',
databasename = 'HXE', # using the DB name instead of a port number
#key='USER1UserKey', # address, port, user and password are retreived from the hdbuserstore
encrypt=True, # must be set to True when connecting to HANA Cloud
sslValidateCertificate=False # True HC, False for HANA Express.
)
#If no errors, print connected
print('connected')
c1 = conn.cursor()
c1.execute("SET SCHEMA R_C") # <-- here we set the current schema for the connection
c1.execute("SELECT current_schema FROM DUMMY") # <-- checking the current schema
rows = c1.fetchall(); # <-- [('R_C',)]
这对我来说效果很好,除了设置架构的附加命令外,我没有看到任何副作用。