39 lines
793 B
Ruby
39 lines
793 B
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
|
|
# for more information on how to write migrations for GitLab.
|
|
|
|
class DropDuplicateProtectedTags < ActiveRecord::Migration[4.2]
|
|
DOWNTIME = false
|
|
|
|
disable_ddl_transaction!
|
|
|
|
BATCH_SIZE = 1000
|
|
|
|
class Project < ActiveRecord::Base
|
|
self.table_name = 'projects'
|
|
|
|
include ::EachBatch
|
|
end
|
|
|
|
class ProtectedTag < ActiveRecord::Base
|
|
self.table_name = 'protected_tags'
|
|
end
|
|
|
|
def up
|
|
Project.each_batch(of: BATCH_SIZE) do |projects|
|
|
ids = ProtectedTag
|
|
.where(project_id: projects)
|
|
.group(:name, :project_id)
|
|
.select('max(id)')
|
|
|
|
tags = ProtectedTag
|
|
.where(project_id: projects)
|
|
.where.not(id: ids)
|
|
|
|
tags.delete_all
|
|
end
|
|
end
|
|
|
|
def down
|
|
end
|
|
end
|