hygf_document_station.preparation_money_id as preparationMoneyId,
hygf_power_station.process_instance_id as instanceId
from
(select instance_id from hygf_preparation_money_auditing where hygf_document_station.preparation_money_id = hygf_preparation_money_auditing.preparation_money_id limit 1) as instanceId from
hygf_peasant_household
LEFT JOIN hygf_document_station on hygf_peasant_household.sequence_nbr = hygf_document_station.station_id
LEFT JOIN hygf_power_station on hygf_peasant_household.sequence_nbr = hygf_power_station.peasant_household_id