From 457c27e697cc368a484f68e3435d89b78eeea9cd Mon Sep 17 00:00:00 2001 From: Jean-Philippe Lang Date: Thu, 7 Feb 2013 18:21:18 +0000 Subject: [PATCH] Add unique index on custom_fields_projects. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11330 e93f8b46-1217-0410-a6f0-8f06a7374b81 --- ..._unique_index_on_custom_fields_projects.rb | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 db/migrate/20130207181455_add_unique_index_on_custom_fields_projects.rb diff --git a/db/migrate/20130207181455_add_unique_index_on_custom_fields_projects.rb b/db/migrate/20130207181455_add_unique_index_on_custom_fields_projects.rb new file mode 100644 index 000000000..223818d4f --- /dev/null +++ b/db/migrate/20130207181455_add_unique_index_on_custom_fields_projects.rb @@ -0,0 +1,24 @@ +class AddUniqueIndexOnCustomFieldsProjects < ActiveRecord::Migration + def up + table_name = "#{CustomField.table_name_prefix}custom_fields_projects#{CustomField.table_name_suffix}" + duplicates = CustomField.connection.select_rows("SELECT custom_field_id, project_id FROM #{table_name} GROUP BY custom_field_id, project_id HAVING COUNT(*) > 1") + duplicates.each do |custom_field_id, project_id| + # Removes duplicate rows + CustomField.connection.execute("DELETE FROM #{table_name} WHERE custom_field_id=#{custom_field_id} AND project_id=#{project_id}") + # And insert one + CustomField.connection.execute("INSERT INTO #{table_name} (custom_field_id, project_id) VALUES (#{custom_field_id}, #{project_id})") + end + + if index_exists? :custom_fields_projects, [:custom_field_id, :project_id] + remove_index :custom_fields_projects, [:custom_field_id, :project_id] + end + add_index :custom_fields_projects, [:custom_field_id, :project_id], :unique => true + end + + def down + if index_exists? :custom_fields_projects, [:custom_field_id, :project_id] + remove_index :custom_fields_projects, [:custom_field_id, :project_id] + end + add_index :custom_fields_projects, [:custom_field_id, :project_id] + end +end