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class MigrateLabelsPriority < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = true
DOWNTIME_REASON = 'Prioritized labels will not work as expected until this migration is complete.'
disable_ddl_transaction!
def up
execute <<-EOF.strip_heredoc
INSERT INTO label_priorities (project_id, label_id, priority, created_at, updated_at)
SELECT labels.project_id, labels.id, labels.priority, NOW(), NOW()
FROM labels
WHERE labels.project_id IS NOT NULL
AND labels.priority IS NOT NULL;
EOF
end
def down
if Gitlab::Database.mysql?
execute <<-EOF.strip_heredoc
UPDATE labels
INNER JOIN label_priorities ON labels.id = label_priorities.label_id AND labels.project_id = label_priorities.project_id
SET labels.priority = label_priorities.priority;
EOF
else
execute <<-EOF.strip_heredoc
UPDATE labels
SET priority = label_priorities.priority
FROM label_priorities
WHERE labels.id = label_priorities.label_id
AND labels.project_id = label_priorities.project_id;
EOF
end
end
end
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