python - Dask：“DataFrame”对象没有属性“_meta”

Question

我尝试连接 Ms SQL 服务器并将数据框加载到 SQL 服务器中，同时连接时我不断收到“无属性 '_meta'”。

我是 Dask Dataframe 的新手，有人可以帮帮我。这将非常有帮助。

询问：

dd.to_sql(df,name='Test_DD',
          uri = 'mssql+pyodbc://{'+USERNAME+'}:{'+PASSWORD+'}@{'+SERVER+'}/{'+DATABASE+'}?driver={'+DRIVER+'}?Trusted_Connection=yes')

错误：

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-81-50a6f69a8209> in <module>
      1 dd.to_sql(df,name='Test_DD',
----> 2           uri = 'mssql+pyodbc://{'+USERNAME+'}:{'+PASSWORD+'}@{'+SERVER+'}/{'+DATABASE+'}?driver={'+DRIVER+'}?Trusted_Connection=yes')

C:\Python\envs\poc\lib\site-packages\dask\dataframe\io\sql.py in to_sql(df, name, uri, schema, if_exists, index, index_label, chunksize, dtype, method, compute, parallel)
    379 
    380     make_meta = delayed(make_meta)
--> 381     meta_task = make_meta(df._meta)
    382 
    383     # Partitions should always append to the empty table created from `meta` above

C:\Python\envs\poc\lib\site-packages\pandas\core\generic.py in __getattr__(self, name)
   5272             if self._info_axis._can_hold_identifiers_and_holds_name(name):
   5273                 return self[name]
-> 5274             return object.__getattribute__(self, name)
   5275 
   5276     def __setattr__(self, name: str, value) -> None:

AttributeError: 'DataFrame' object has no attribute '_meta'