SELECT fi.*, SUM(fi.amount) as differenceAmt, price_field_value_id, financial_type_id, tax_amount
FROM civicrm_financial_item fi LEFT JOIN civicrm_line_item li ON (li.id = fi.entity_id AND fi.entity_table = 'civicrm_line_item')
WHERE (li.entity_table = 'civicrm_participant' AND li.entity_id = {$participantId})
SELECT fi.*, SUM(fi.amount) as differenceAmt, price_field_value_id, financial_type_id, tax_amount
FROM civicrm_financial_item fi LEFT JOIN civicrm_line_item li ON (li.id = fi.entity_id AND fi.entity_table = 'civicrm_line_item')
WHERE (li.entity_table = 'civicrm_participant' AND li.entity_id = {$participantId})