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# frozen_string_literal: true
class UpdateResourceStateEventsConstraintToSupportEpicId < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
OLD_CONSTRAINT = 'resource_state_events_must_belong_to_issue_or_merge_request'
CONSTRAINT_NAME = 'resource_state_events_must_belong_to_issue_or_merge_request_or_'
def up
remove_check_constraint :resource_state_events, OLD_CONSTRAINT
add_check_constraint :resource_state_events, "(issue_id != NULL AND merge_request_id IS NULL AND epic_id IS NULL) OR " \
"(issue_id IS NULL AND merge_request_id != NULL AND epic_id IS NULL) OR" \
"(issue_id IS NULL AND merge_request_id IS NULL AND epic_id != NULL)", CONSTRAINT_NAME
end
def down
remove_check_constraint :resource_state_events, CONSTRAINT_NAME
add_check_constraint :resource_state_events, '(issue_id != NULL AND merge_request_id IS NULL) OR (merge_request_id != NULL AND issue_id IS NULL)', OLD_CONSTRAINT
end
end
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