Sono stato in grado di risolvere il problema con una soluzione fornita da un esperto SQL Chris Saxon
usando con WITH CTE. In precedenza l'ho usato come tabella di guida principale, ma risulta che dovrebbe essere nelle query di correlazione come di seguito:
with ar_kbox_details as (
select ab_info_n3 trx_id,
ab_info_v5 box,
ab_info_n1 amount
from xxab_zz_vat_trx_gt
where ab_info_v1 = 'AR'
and ab_info_v5 <> 'tns:'
union all
select ab_info_n3 trx_id,
ab_info_v6 box,
ab_info_n2 amount
from xxab_zz_vat_trx_gt
where ab_info_v1 = 'AR'
and ab_info_v6 <> 'tns:'
)
SELECT XMLAGG(XMLCONCAT(XMLElement
("tns:SprzedazWiersz",
xmlelement("tns:LpSprzedazy" , rownum),
xmlelement("tns:KodKrajuNadaniaTIN", substr(ar_trx.tax_reg_num, 0, 2)),
xmlelement("tns:NrKontrahenta" , substr(ar_trx.tax_reg_num, 2)),
xmlelement("tns:NazwaKontrahenta" , ar_trx.cust_name),
xmlelement("tns:DowodSprzedazy" , ar_trx.trx_number),
xmlelement("tns:DataWystawienia" , TO_CHAR(ar_trx.invoice_date,'RRRR-MM-DD')),
Case When ar_trx.sales_date is not null Then xmlelement("tns:DataSprzedazy" , TO_CHAR(ar_trx.sales_date,'RRRR-MM-DD')) END
-- Document Type
,(select distinct xmlagg(xmlconcat(xmlelement("tns:TypDokumentu", ab_info_v15)))
From xxab_zz_vat_trx_gt
Where ab_info_v1 = 'AR'
and ab_info_n3 = ar_trx.trx_id
and ab_info_v16 = 'ORA_JEPL_DOCUMENT_TYPE')
-- product category code
,(select distinct xmlagg(xmlconcat(xmlelement(evalname(ab_info_v13), 1)))
from xxab_zz_vat_trx_gt
Where ab_info_V1 = 'AR'
and ab_info_v13 <> 'tns:'
and ab_info_n3 = ar_trx.trx_id)
-- Trade Attributes
,(select distinct xmlagg(xmlconcat(xmlelement(evalname(DECODE(TRADE_ATTRIBUTE_VALUES, '1', 'tns:MPP', TRADE_ATTRIBUTE_VALUES)), 1))
order by
case TRADE_ATTRIBUTE_VALUES
when 'tns:SW' THEN 1
when 'tns:EE' THEN 2
when 'tns:TP' THEN 3
when 'tns:TT_WNT' then 4
when 'tns:TT_D' THEN 5
when 'tns:MR_T' THEN 6
when 'tns:MR_UZ' THEN 7
when 'tns:I_42' THEN 8
when 'tns:I_63' THEN 9
when 'tns:B_SPV' THEN 10
when 'tns:B_SPV_DOSTAWA' THEN 11
when 'tns:B_MPV_PROWIZJA' THEN 12
when 'tns:MPP' THEN 13
ELSE 14 END)
from xxab_zz_vat_trx_gt unpivot (TRADE_ATTRIBUTE_VALUES for TRADE_ATTRIBUTES in (ab_info_v12, ab_info_v20))
Where ab_info_V1 = 'AR'
and TRADE_ATTRIBUTE_VALUES not in ('tns:', 'tns:IMP', '0')
and ab_info_n3 = ar_trx.trx_id
)
--KBoxes
,(select xmlagg(xmlconcat(xmlelement(evalname(fnd_box.box),ROUND(sum(nvl(akd.amount, 0)),2))))
from ar_kbox_details akd
, (SELECT 'tns:K_'||(LEVEL + 9) box
FROM dual
CONNECT BY LEVEL <= 27) fnd_box
where fnd_box.box = akd.box (+)
and ar_trx.trx_id = akd.trx_id (+)
group by fnd_box.box)
)))
From ( Select distinct
ab_info_n3 trx_id
, ab_info_v2 trx_number
, ab_info_d1 sales_date
, ab_info_d3 invoice_date
, ab_info_v3 cust_name
, ab_info_v17 cust_addr
, ab_info_v7 tax_reg_num
From xxab_zz_vat_trx_gt
Where ab_info_v1 = 'AR'
Order by 3,4) ar_trx
