select ai.invoice_id 发票ID,
       ai.invoice_num 发票编号,
       ail.line_number 发票行号,
       ap_prepay_utils_pkg.get_line_prepay_amt_remaining(ail.invoice_id,
                                                         ail.line_number) 待核销金额,
       aps.vendor_name 供应商名称

  from ap_invoices_all              ai,
       ap_invoice_lines_all         ail,
       ap_invoice_distributions_all aid,
       gl_code_combinations         gcc,
       ap_suppliers                 aps
 where 1 = 1
   and ai.invoice_id = ail.invoice_id
   and aps.vendor_id = ai.vendor_id
   and ail.invoice_id = aid.invoice_id
   and ail.line_number = aid.invoice_line_number
   and aps.enabled_flag = 'Y'
   and (aps.end_date_active is null or aps.end_date_active > sysdate)
   and ai.invoice_type_lookup_code = 'PREPAYMENT'
      –获取为可用状态的预付款发票,即已经对预付款系统内付款完成
   and ap_invoices_utility_pkg.get_approval_status(ai.invoice_id,
                                                   ai.invoice_amount,
                                                   ai.payment_status_flag,
                                                   ai.invoice_type_lookup_code) =
       'AVAILABLE'
   and decode(ai.invoice_type_lookup_code,
              'PREPAYMENT',
              decode(ai.earliest_settlement_date,
                     '',
                     'PERMANENT',
                     'TEMPORARY')) = 'TEMPORARY'
   and ai.accts_pay_code_combination_id = gcc.code_combination_id;