title: Unsupported string encoding using Blaze Data(engine)
body: <p>Is there a workaround for this?</p>
  
  <p>I have a MSSQL table that uses collation settings of SQL_Latin1_General_CP1_CI_AS.</p>
  
  <pre><code>engine = create_engine('mssql+pyodbc://'+ServerName+'/'+Database+'?driver='+ServerDriver+'?charset=cp2150')
  </code></pre>
  
  <p>I am able to load it into a pandas DataFrame with</p>
  
  <pre><code>prov_chunk = pd.read_sql('select * from table_name,engine')
  </code></pre>
  
  <p>But hit an error when I try to use Blaze</p>
  
  <pre><code>    #Error
  C:\Anaconda\envs\care\lib\site-packages\datashape\coretypes.pyc in __init__(self, *args)
      361         except KeyError:
      362             raise ValueError('Unsupported string encoding %s' %
  --&gt; 363                              repr(encoding))
      364 
      365         self.encoding = encoding
  
  ValueError: Unsupported string encoding u'SQL_Latin1_General_CP1_CI_AS'
  </code></pre>
  
  <p>I cannot change the collation and would like to use Blaze more for my own data analysis. Any ideas?</p>