remove duplicated key

sql/patch_84_85_b.sql

+-- Copyright [1999-2016] Wellcome Trust Sanger Institute and the 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_84_85_b.sql
+#
+# Title: Change xref.version default.
+#
+# Description:
+#   Remove duplicated keys
+
+ALTER TABLE genome_statistics DROP KEY stats_idx;
+ALTER TABLE xref MODIFY COLUMN version VARCHAR(10) DEFAULT NULL ;
+
+
+# Patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value)
+  VALUES (NULL, 'patch', 'patch_84_85_b.sql|remove_duplicated_key');

sql/table.sql

@@ -227,8 +227,7 @@ CREATE TABLE genome_statistics(
   timestamp                DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
 
   PRIMARY KEY (genome_statistics_id),
-  UNIQUE KEY stats_uniq(statistic, attrib_type_id, species_id),
-  KEY stats_idx (statistic, attrib_type_id, species_id)
+  UNIQUE KEY stats_uniq(statistic, attrib_type_id, species_id)
 
 ) COLLATE=latin1_swedish_ci ENGINE=MyISAM;
 
@@ -309,6 +308,8 @@ INSERT INTO meta (species_id, meta_key, meta_value) VALUES
 # NOTE: Avoid line-breaks in values.
 INSERT INTO meta (species_id, meta_key, meta_value)
   VALUES (NULL, 'patch', 'patch_84_85_a.sql|schema_version');
+INSERT INTO meta (species_id, meta_key, meta_value)
+  VALUES (NULL, 'patch', 'patch_84_85_b.sql|remove_duplicated_key');
 
 
 /**