src/main/resources/mapper/energy/EnergyConsumptionDetailMapper.xml
@@ -41,8 +41,8 @@ </where> </select> <select id="calculateEnergy" resultType="java.util.Map"> select SUM(ecd.dosage) totalEnergyConsumption, SUM(ecd.dosage * e.unit_price) totalEnergyCost select SUM(COALESCE(ecd.dosage,0)) totalEnergyConsumption, SUM(COALESCE(ecd.dosage,0) * COALESCE(e.unit_price,0)) totalEnergyCost from energy_consumption_detail ecd left join energy e on ecd.energy_id = e.id where ecd.meter_reading_date between #{c.startDate} and #{c.endDate}