code: def get_schema(self, table_name, database=None):
          
          qualified_name = self._fully_qualified_name(table_name, database)
          query = 'DESC {0}'.format(qualified_name)
          data, _, _ = self.raw_sql(query, results=True)
  
          colnames, coltypes = data[:2]
          coltypes = list(map(ClickhouseDataType.parse, coltypes))
  
          return sch.schema(colnames, coltypes)
docs: Return a Schema object for the indicated table and database
  
          Parameters
          ----------
          table_name : string
            May be fully qualified
          database : string, default None
  
          Returns
          -------
          schema : ibis Schema