text: -- NOTE: this script is DANGEROUS and may cause data loss so it is for advanced users only
  -- NOTE: before running this script, you should stop the myems-normalization service and myems-aggregation service
  -- NOTE: after running this scipt, you should start the myems-normalization service and myems-aggregation service
  -- NOTE: the start datetime in datebase are in UTC 
  
  DELETE FROM `myems_energy_db`.`tbl_combined_equipment_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_combined_equipment_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_combined_equipment_output_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_equipment_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_equipment_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_equipment_output_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_meter_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  -- NOTE: if you delete tbl_offline_meter_hourly, the offline meter files should be reuploaded
  -- DELETE FROM `myems_energy_db`.`tbl_offline_meter_hourly`
  -- WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_shopfloor_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_shopfloor_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_space_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_space_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_space_output_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_store_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_store_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_tenant_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_tenant_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_energy_db`.`tbl_virtual_meter_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_combined_equipment_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_combined_equipment_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_combined_equipment_output_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_equipment_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_equipment_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_equipment_output_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_meter_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_offline_meter_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_shopfloor_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_shopfloor_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_space_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_space_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_space_output_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_store_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_store_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_tenant_input_category_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_tenant_input_item_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';
  
  DELETE FROM `myems_billing_db`.`tbl_virtual_meter_hourly`
  WHERE start_datetime_utc >= '2020-12-31 16:00:00';