我正在尝试使用以下代码将 df 写入带有 pandas.to_sql 的现有表:
import sqlalchemy
#CREATE CONNECTION
constring = "mssql+pyodbc://UID:PASSWORD@SERVER/DATABASE?driver=SQL Server"
dbEngine = sqlalchemy.create_engine(constring, fast_executemany=True, connect_args={'connect_timeout':10}, echo=False)
#WRITE INTO TABLE
df.to_sql(con=dbEngine, schema="dbo", name="target_table", if_exists="replace", index=False, chunksize=1000)
但它给出了以下错误:
ProgrammingError: (pyodbc.ProgrammingError) ('42000', "[42000] [Microsoft][ODBC SQL Server Driver][SQL Server]CREATE TABLE permission denied in database 'database'. (262) (SQLExecDirectW)")
[SQL:
CREATE TABLE [target_table] (
[chLocalIndustryCode] VARCHAR(max) NULL,
[vcLocalIndustryDesc] VARCHAR(max) NULL,
[chLocalSectorCode] VARCHAR(max) NULL,
[vcLocalSectorDesc] VARCHAR(max) NULL,
[chLocalClusterCode] VARCHAR(max) NULL,
[vcLocalClusterDesc] VARCHAR(max) NULL,
[chLocalMegaClusterCode] VARCHAR(max) NULL,
[vcLocalMegaClusterDesc] VARCHAR(max) NULL)
]
(Background on this error at: https://sqlalche.me/e/14/f405)
我已经检查了连接并在读取表时正常工作，所以我认为问题出在 pandas to_sql() 函数上。我也试过用光标写入表格，但需要很长时间。
我正在使用 Pandas 1.3.4
是否有任何方法可以修复此错误或可以使用 pd.to_sql() 函数的任何替代方法来提高写入速度？
最佳答案
您可能需要为 SQL Server 用户添加创建权限。您可以按照 link 中的以下步骤操作:
To add a Windows user that has the login “domainname \username” to the sysadmin fixed server role
a. Log on to the computer using the credentials for the domainname\username account.
b. Click the Start button, point to All Programs, click Microsoft SQL Server, right-click SQL Server Management Studio, and then click Run as administrator. ps: "Run As Administrator" option elevates the user permissions In the User Access Control dialog box, click Continue.
c. In SQL Server Management Studio, connect to an instance of SQL Server.
d. Click Security, right-click Logins, and then click New Login.
e. In the Login name box, enter the user name.
f. In the Select a page pane, click Server Roles, select the sysadmin check box, and then click OK.
关于python - Pandas to_sql() CREATE TABLE 权限被拒绝，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/71048056/