diff options
| -rw-r--r-- | db/migrate/20130201184705_add_unique_index_on_tokens_value.rb | 15 |
1 files changed, 15 insertions, 0 deletions
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 |