text: -- 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 change_content_column_datatype_of_x_data_hist_table;
  
  delimiter ;;
  create procedure change_content_column_datatype_of_x_data_hist_table() begin
  
   /* change content data type to longtext if not exist */
   if exists (select * from information_schema.columns where table_schema=database() and table_name = 'x_data_hist' and column_name = 'content' and data_type='text') then
  	ALTER TABLE  `x_data_hist` CHANGE `content` `content` MEDIUMTEXT NOT NULL;
   end if;
  
  end;;
  
  delimiter ;
  call change_content_column_datatype_of_x_data_hist_table();
  
  drop procedure if exists change_content_column_datatype_of_x_data_hist_table;
  