From 8b010e85e362245eece363682895fa0c445dc83b Mon Sep 17 00:00:00 2001 From: Jean-Philippe Lang Date: Fri, 1 Feb 2013 20:04:38 +0000 Subject: [PATCH] Add unique index on tokens.value. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11295 e93f8b46-1217-0410-a6f0-8f06a7374b81 --- ...0201184705_add_unique_index_on_tokens_value.rb | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 db/migrate/20130201184705_add_unique_index_on_tokens_value.rb diff --git a/db/migrate/20130201184705_add_unique_index_on_tokens_value.rb b/db/migrate/20130201184705_add_unique_index_on_tokens_value.rb new file mode 100644 index 000000000..fdec9f8ee --- /dev/null +++ b/db/migrate/20130201184705_add_unique_index_on_tokens_value.rb @@ -0,0 +1,15 @@ +class AddUniqueIndexOnTokensValue < ActiveRecord::Migration + def up + say_with_time "Adding unique index on tokens, this may take some time..." do + # Just in case + duplicates = Token.connection.select_values("SELECT value FROM #{Token.table_name} GROUP BY value HAVING COUNT(id) > 1") + Token.where(:value => duplicates).delete_all + + add_index :tokens, :value, :unique => true, :name => 'tokens_value' + end + end + + def down + remove_index :tokens, :name => 'tokens_value' + end +end