-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements.  See the NOTICE file distributed with
-- this work for additional information regarding copyright ownership.
-- The ASF licenses this file to You under the Apache License, Version 2.0
-- (the "License"); you may not use this file except in compliance with
-- the License.  You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.

 drop procedure if exists add_group_source_column_to_x_group_table;

delimiter ;;
 create procedure add_group_source_column_to_x_group_table() begin

 /* add group source column if not exist */
 if exists (select * from information_schema.columns where table_schema=database() and table_name = 'x_group') then
	if not exists (select * from information_schema.columns where table_schema=database() and table_name = 'x_group' and column_name = 'group_src') then
		ALTER TABLE  `x_group` ADD  `group_src` INT NOT NULL DEFAULT 0;
 	end if;
 end if;
  
end;;

delimiter ;

 call add_group_source_column_to_x_group_table();

 drop procedure if exists add_group_source_column_to_x_group_table;