Support for the Sybase database.
The following table summarizes current support levels for database release versions.
The following dialect/DBAPI options are available. Please refer to individual DBAPI sections for connect information.
注解
SQL炼金术中的Sybase方言 当前不支持 . 它没有在持续集成中进行测试，并且可能有许多问题和警告目前尚未处理。考虑使用 external dialect 相反。
1.4 版后已移除: 内部Sybase方言已弃用，将在将来的版本中删除。使用外部方言。
Support for the Sybase database via the Python-Sybase driver.
Documentation and download information (if applicable) for Python-Sybase is available at: https://python-sybase.sourceforge.net/
Connect String:
sybase+pysybase://<username>:<password>@<dsn>/[database name]此时，python sybase驱动程序似乎不支持任何类型的非ASCII字符串。
Support for the Sybase database via the PyODBC driver.
Documentation and download information (if applicable) for PyODBC is available at: https://pypi.org/project/pyodbc/
Connect String:
sybase+pyodbc://<username>:<password>@<dsnname>[/<database>]pyodbc驱动程序当前支持使用这些带有unicode或多字节字符串的Sybase类型：
CHAR
NCHAR
NVARCHAR
TEXT
VARCHAR目前 not 支持的有：
UNICHAR
UNITEXT
UNIVARCHARSupport for the Sybase database via the mxODBC driver.
Documentation and download information (if applicable) for mxODBC is available at: https://www.egenix.com/
Connect String:
sybase+mxodbc://<username>:<password>@<dsnname>注解
这种方言只是一个存根，目前可能不起作用。
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