USE provisioning;
SET autocommit=0;

UPDATE voip_preferences SET
	description = 'Provide this field as pre-coded value to add it to the SDP as MIME object with content-type "application/vnd.cirpack.isdn-ext" and "content-disposition: signal;handling=required" according to the German NGN interconnect specification',
	type = 0,
	data_type = "string"
	WHERE attribute = 'emergency_location_object';

SELECT id into @at_id FROM voip_preferences where
	attribute = "emergency_location_format" and
	label = "Emergency location format";

DELETE FROM voip_preferences_enum where
	 preference_id = @at_id;

DELETE FROM voip_preferences where
	id = @at_id;

-- migrate values to string
SELECT id into @at_id FROM voip_preferences
	WHERE attribute = 'emergency_location_object';

-- migrate values to string
CREATE TEMPORARY TABLE tmp_voip_usr_preferences_blob
	SELECT id, preference_id, value FROM voip_usr_preferences_blob as _blob
	WHERE id IN (SELECT value FROM voip_usr_preferences WHERE attribute_id = @at_id);

DELETE FROM voip_usr_preferences_blob
	WHERE id IN (SELECT id FROM tmp_voip_usr_preferences_blob);

UPDATE voip_usr_preferences as _up, tmp_voip_usr_preferences_blob as _blob
	SET _up.value = _blob.value
	WHERE _up.id = _blob.preference_id and _up.attribute_id = @at_id;

COMMIT;