在 python hdbcli dbapi 中有 select 模式的方法吗?

Is there a way to select schema in python hdbcli dbapi?

根据documentation,连接到HANA数据库所需的参数是主机、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?

据我所知,没有允许 setting/switching 到特定架构的连接 属性。

但是,您可以轻松做到的是在创建连接后立即切换到您想要的模式:

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 side-effects。