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_89_90_c.sql
  #
  # Title: Mark constrained_element.p_value as NOT NULL
  #
  # Description:
  #   A p-value can in fact always be present, although sometimes zero
  
  
  UPDATE constrained_element SET p_value = 0 WHERE p_value IS NULL;
  ALTER TABLE constrained_element MODIFY p_value DOUBLE NOT NULL DEFAULT 0;
  
  
  # Patch identifier
  INSERT INTO meta (species_id, meta_key, meta_value)
    VALUES (NULL, 'patch', 'patch_89_90_c.sql|constrained_element_pvalue_not_null');
  