discourse/db/migrate/20220309132719_copy_post_up...

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# frozen_string_literal: true
class CopyPostUploadsToUploadReferences < ActiveRecord::Migration[6.1]
def up
execute <<~SQL
INSERT INTO upload_references(upload_id, target_type, target_id, created_at, updated_at)
SELECT post_uploads.upload_id, 'Post', post_uploads.post_id, uploads.created_at, uploads.updated_at
FROM post_uploads
JOIN uploads ON uploads.id = post_uploads.upload_id
ON CONFLICT DO NOTHING
SQL
end
def down
raise ActiveRecord::IrreversibleMigration
end
end