Fix Presto table reflection

Author: jingw

pyhive/sqlalchemy_presto.py

@@ -272,7 +272,7 @@ def get_table_names(self, connection, schema=None, **kw):
         query = 'SHOW TABLES'
         if schema:
             query += ' FROM ' + self.identifier_preparer.quote_identifier(schema)
-        return [row.tab_name for row in connection.execute(query)]
+        return [row.Table for row in connection.execute(query)]
 
     def do_rollback(self, dbapi_connection):
         # No transactions for Presto