问题
I'm trying to use Python's SQLAlchemy library to query a Teradata database. I was able to create the engine okay using the following code.
from sqlalchemy import create_engine
td_engine = create_engine('teradata://' + 'usrname' + ':' + 'pswrd' + '@' + 'myOdbcDataSource' + ':22/?charset=UTF8')
But when I try to use the engine, I get the following error.
ValueError: character U+590048 is not in range [U+0000; U+10ffff]
This error occurs using all the functions that interact with the database that I tried. For example, I get this error when I try to execute the following.
sqlStr = 'select top 1000 * from myTable;'
result = td_engine.execute(sqlStr)
As another example, I get the same error when I try to execute the following.
td_engine.table_names('mySchema')
The log right before the error indicates a connection to the database using the ODBC driver is being made so I wonder if this has something to do with the way I configured the ODBC driver. Below is my odbc.ini file located at /Library/ODBC/ on my Mac.
[ODBC Data Sources]
myodbca = MySQL ODBC 5.3 ANSI Driver
myodbc = MySQL ODBC 5.3 Unicode Driver
myOdbcDataSource = Teradata Database ODBC Driver 16.20
[myOdbcDataSource]
Driver = /Library/Application Support/teradata/client/16.20/lib/tdataodbc_sbu.dylib
DBCName = myUrl
DefaultDatabase = myDb
UserName = usrname
Password = pswrd
CharacterSet = UTF8
Does anyone have any ideas on how to fix this Unicode error and get the SQL Alchemy Teradata engine working? Thank you in advance.
回答1:
Try to adjust encoding to UTF8:
from os import environ
environ["NLS_LANG"] = ".AL32UTF8"
来源：https://stackoverflow.com/questions/50024626/sqlalchemy-unicode-error-querying-teradata-database