text: -- Copyright [1999-2015] Wellcome Trust Sanger Institute and the EMBL-European Bioinformatics Institute
  -- Copyright [2016-2019] EMBL-European Bioinformatics Institute
  -- 
  -- Licensed 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.
  
  # patch_58_59_a.sql
  #
  # title: update schema version
  #
  # description:
  # Update schema_version in meta table to 59
  
  #We need to insert this for new species!
  #Unique key will not capture duplicate NULL species_id patches
  #So we need to handle this
  
  #Is there a HC for multiple schema_version entries
  
  
  #SET @schema_version_count=(SELECT COUNT(*) FROM meta WHERE meta_key='schema_version'); 
  #This flow control only allows return values to be constants, not selects!
  #Would need stored procedure/program/function with IF statement 
  #IF (@schema_version_count > 1, select "Found more than 1 meta entry for schem_version. Please resolve", select NULL);
  #IF (@schema_version_count = 1, select "updating", select NULL);	
  #Or can we just delete and re-insert, living with the meta_id increment 
  
  UPDATE meta SET meta_value='59' WHERE meta_key='schema_version';
  
  # patch identifier
  INSERT INTO meta (species_id, meta_key, meta_value) VALUES (NULL, 'patch', 'patch_58_59_a.sql|schema_version');
  
  
  