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class AddUniqueConstraintToProjectMirrorDataProjectIdIndex < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
add_concurrent_index(:project_mirror_data,
:project_id,
unique: true,
name: 'index_project_mirror_data_on_project_id_unique')
remove_concurrent_index_by_name(:project_mirror_data, 'index_project_mirror_data_on_project_id')
rename_index(:project_mirror_data,
'index_project_mirror_data_on_project_id_unique',
'index_project_mirror_data_on_project_id')
end
def down
rename_index(:project_mirror_data,
'index_project_mirror_data_on_project_id',
'index_project_mirror_data_on_project_id_old')
add_concurrent_index(:project_mirror_data, :project_id)
remove_concurrent_index_by_name(:project_mirror_data,
'index_project_mirror_data_on_project_id_old')
end
end
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