如何使用unixODBC和FreeTDS连接到Azure?
我在CentOS上,可以使用以下命令登录到我的数据库:
I'm on CentOS and I can log into my database using the following:
TDSVER=7.2 tsql -H example.database.windows.net -U myname -D MyDataBase -p 1433
然后我输入密码,然后可以登录A-OK.不幸的是,isql
/osql
似乎在做同一件事时要困难得多.
Then I put in my password and I can log in A-OK. Unfortunately isql
/osql
seem to have much more difficulty doing the same thing.
我的配置如下:
〜/.odbc.ini
[AwesomeDatabase]
Description = Azure Awesome Database
Trace = off
Server = example.database.windows.net
Database = AwesomeDatabase
UID = wayne@example
PWD = mypassword
Port = 1433
TDS Version = 7.2
ForceTrace = off
Encrypt = yes
#Driver = FreeTDS
Driver = /usr/lib64/libtdsodbc.so
Ansi = True
client charset = utf-8
使用isql
:
⚘ isql -v CDH
[S1000][unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[01000][unixODBC][FreeTDS][SQL Server]Unexpected EOF from the server
[01000][unixODBC][FreeTDS][SQL Server]Adaptive Server connection failed
[ISQL]ERROR: Could not SQLConnect
好吧,那很不幸.尝试osql
:
Well, that's unfortunate. Trying osql
:
⚘ osql -S AwesomeDatabase -U wayne@example -P mypassword # I've tried wayne instead of wayne@example, neither works
checking shared odbc libraries linked to isql for default directories...
strings: '': No such file
trying /tmp/sql ... no
trying /tmp/sql ... no
trying /etc ... OK
checking odbc.ini files
reading /home/me/.odbc.ini
[AwesomeDatabase] found in /home/me/.odbc.ini
found this section:
[AwesomeDatabase]
Description = Azure Awesome Database
Trace = off
Server = example.database.windows.net
Database = AwesomeDatabase
UID = wayne@example
PWD = mypassword
Port = 1433
TDS Version = 7.2
ForceTrace = off
Encrypt = yes
#Driver = FreeTDS
Driver = /usr/lib64/libtdsodbc.so
Ansi = True
client charset = utf-8
looking for driver for DSN [AwesomeDatabase] in /home/me/.odbc.ini
found driver line: " Driver = /usr/lib64/libtdsodbc.so"
driver "/usr/lib64/libtdsodbc.so" found for [AwesomeDatabase] in .odbc.ini
found driver named "/usr/lib64/libtdsodbc.so"
/usr/lib64/libtdsodbc.so is an executable file
"Server" found, not using freetds.conf
Server is "example.database.windows.net"
Configuration looks OK. Connection details:
DSN: AwesomeDatabase
odbc.ini: /home/me/.odbc.ini
Driver: /usr/lib64/libtdsodbc.so
Server hostname: example.database.windows.net
Address: 191.235.192.43
Attempting connection as wayne ...
+ isql CDH wayne mypassword -v
[S1000][unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[01000][unixODBC][FreeTDS][SQL Server]Unexpected EOF from the server
[01000][unixODBC][FreeTDS][SQL Server]Adaptive Server connection failed
[ISQL]ERROR: Could not SQLConnect
net.c:202:FAILED Connecting to 191.235.192.43 port 1433 (TDS version 4.2)
在Linux上使用unixODBC连接到Azure需要做什么?
What do I need to do to connect to Azure using unixODBC on Linux?
问题是,如果您不提供用户名和密码,则会将其视为可信连接.我不是100%这意味着什么,但是显然这是行不通的.有效的配置实际上非常简单.
The problem is that if you don't provide a username and password then it's treated as a Trusted Connection. I'm not 100% what that means, but obviously it doesn't work. A working config is actually fairly straightforward.
[AwesomeDatabase]
Description = Azure Awesome Database
Server = example.database.windows.net
Database = AwesomeDatabase
Port = 1433
# Note the underscore
TDS_Version = 7.2
# Or `FreeTDS if you want to put some settings in your
# odbcinst.ini file
Driver = /usr/lib64/libtdsodbc.so
现在,您必须在isql的命令行上提供密码(不确定是否可以通过交互式方式获取它.始终为xargs
):
Now you must provide your password on the command line for isql (not sure if there's a way to get it interactively. There's always xargs
):
$ isql AwesomeDatabase wayne@example mypassword # "wayne" without @example seems to work, too.
那将正常工作.如果您使用的是sqlalchemy,则可以像这样通过pyodbc连接:
And that will work just fine. If you're using sqlalchemy you can connect via pyodbc like so:
import sqlalchemy
from urllib.parse import quote
engine = sa.create_engine(
'mssql+pyodbc://{user}:{password}@AwesomeDatabase'.format(
user=quote('wayne@example'),
password=quote('mypassword'),
),
legacy_schema_aliasing=False,
)
for row in engine.execute(sa.text('select current_timestamp')):
print(*row)
或者,直接使用pyodbc
:
import pyodbc
# Without the Uid/Pwd it thinks it's a Trusted Connection
# again
conn = pyodbc.connect('DSN=AwesomeDatabase;Uid=wayne@example;Pwd=mypassword;')
cursor = conn.cursor()
cursor.execute('select current_timestamp');
for row in cursor.fetchall():
print(*row)
现在生活应该为你幸福.
And life should now be happy for you.