diff options
Diffstat (limited to 'db/migrate/20180206200543_reset_events_primary_key_sequence.rb')
-rw-r--r-- | db/migrate/20180206200543_reset_events_primary_key_sequence.rb | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/db/migrate/20180206200543_reset_events_primary_key_sequence.rb b/db/migrate/20180206200543_reset_events_primary_key_sequence.rb new file mode 100644 index 00000000000..eb5c4a6a1e7 --- /dev/null +++ b/db/migrate/20180206200543_reset_events_primary_key_sequence.rb @@ -0,0 +1,35 @@ +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class ResetEventsPrimaryKeySequence < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + # Set this constant to true if this migration requires downtime. + DOWNTIME = false + + class Event < ActiveRecord::Base + self.table_name = 'events' + end + + def up + if Gitlab::Database.postgresql? + reset_primary_key_for_postgresql + else + reset_primary_key_for_mysql + end + end + + def down + # No-op + end + + def reset_primary_key_for_postgresql + reset_pk_sequence!(Event.table_name) + end + + def reset_primary_key_for_mysql + amount = Event.pluck('COALESCE(MAX(id), 1)').first + + execute "ALTER TABLE #{Event.table_name} AUTO_INCREMENT = #{amount}" + end +end |