有沒有辦法在 python hdbcli dbapi 中選擇模式？

Question

根據文檔，連接到 HANA 數據庫所需的參數是主機、端口、用戶和密碼。

from hdbcli import dbapi
conn = dbapi.connect(
    address="<hostname>",
    port=3<NN>MM,
    user="<username>",
    password="<password>"
)
cursor = conn.cursor()

這默認選擇用戶名作為架構。 有沒有辦法指定架構名稱？

Answer 1

AFAIK 沒有允許設置/切換到特定模式的連接屬性。

但是，您可以輕松地做的是在創建連接后立即切換到您想要的模式：

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',)]

這對我來說很有效，除了設置架構的附加命令之外，我沒有看到任何副作用。