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class AddIndexConstraintsToPipelineIid < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
add_concurrent_index :ci_pipelines, [:project_id, :iid], unique: true, where: 'iid IS NOT NULL'
end
def down
remove_concurrent_index :ci_pipelines, [:project_id, :iid]
end
end
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